Discovery kits with STM32H745XI and …of ST-LINK derivatives (TN1235) for details. 6.4 Power supply...

IntroductionThe STM32H745I-DISCO and STM32H750B-DK Discovery kits are complete demonstration and development platforms forSTMicroelectronics Arm® Cortex®-M7 and -M4 dual-core-based STM32H745XI (STM32H745XIH6 order code) andSTM32H750XB (STM32H750XBH6 order code) microcontrollers. Both devices feature four I2Cs, six SPIs with three multiplexedsimplex I2Ss, two SD/SDIO/DMMC interfaces, four USARTs, four UARTs, one LPUART, two CAN controllers, three 16-bit ADCs,two 12-bit DACs, four SAIs, 8- to 14-bit digital camera interface, 1 Mbyte (STM32H745XIH6) or 128 Kbytes (STM32H750XBH6)of internal SRAM and 2 Mbytes of Flash memory, a USB OTG HS and a USB OTG FS, an Ethernet MAC interface, an FMCinterface, a Quad-SPI interface, and SWD debugging support. The STM32H745I-DISCO and STM32H750B-DK Discovery kitsenable users to quickly get started and develop applications.

In addition, the STM32H745I-DISCO and STM32H750B-DK, shown in Figure 1 and Figure 2, can be used as a referencedesign for user application prototyping before porting to the final product.

The full range of hardware features available on the board helps users improve application development by an evaluation ofalmost all peripherals (such as USB OTG FS, Ethernet 10/100Mb/s, eMMC, USART, SAI Audio DAC stereo with audio jackinput and output, MEMS digital microphone, SDRAM, Quad-SPI Flash memory, and RGB LCD interface with capacitive multi-touch panel). ARDUINO® Uno V3 connectors provide easy connection to extension shields or daughterboards for specificapplications.

STLINK-V3E is integrated into the board, as an embedded in-circuit debugger and programmer for the STM32 microcontrollerand the USB Virtual COM port bridge.

The STM32H745I-DISCO and STM32H750B-DK boards come with the STM32CubeH7 MCU package, which provides anSTM32 comprehensive software HAL library as well as various software examples.

Figure 1. STM32H745I-DISCO and STM32H750B-DKboards (top view)

Figure 2. STM32H745I-DISCO and STM32H750B-DKboards (bottom view)

Pictures are not contractual. PCB colors may differ.

Discovery kits with STM32H745XI and STM32H750XB microcontrollers

UM2488

User manual

UM2488 - Rev 5 - January 2020For further information contact your local STMicroelectronics sales office.

www.st.com

https://www.st.com/en/product/stm32h745i-disco?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2488

https://www.st.com/en/product/stm32h750b-dk?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2488

https://www.st.com/en/product/stm32h745xi?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2488

https://www.st.com/en/product/stm32h750xb?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2488







1 Features

• Arm® Cortex® core-based microcontroller with 2 Mbytes (STM32H745XIH6) or 128 Kbytes(STM32H750XBH6) of Flash memory and 1 Mbyte of RAM, in TFBGA240+25 package

• 4.3” RGB interface LCD with touch panel connector• Ethernet compliant with IEEE-802.3-2002, and PoE• USB OTG FS with Micro-AB connector• SAI audio codec• One ST-MEMS digital microphone• 2× 512-Mbit Quad-SPI NOR Flash memory• 128-Mbit SDRAM• 4-Gbyte on-board eMMC• 1 user and reset push-button• Fanout daughterboard• 2× CAN FDs• Board connectors:

– USB FS Micro-AB connectors– ST-LINK Micro-B USB connector– USB power Micro-B connector– Ethernet RJ45– Stereo headset jack including analog microphone input– Audio header for external speakers– Tag-Connect (TAG) 10-pin footprint– Arm® Cortex® 10-pin 1.27 mm pitch debug connector over STDC14 footprint– ARDUINO® Uno V3 expansion connectors– STMod+

• Flexible power-supply options:– STLINK-V3 USB connector, USB FS connector– 5 V delivered by RJ45 (Power over Ethernet)– 5 V delivered by ARDUINO® or external connector– USB charger– USB power

• On-board STLINK-V3E debugger/programmer with USB re-enumeration capability: mass storage, VirtualCOM port, and debug port

• Support of a wide choice of Integrated Development Environments (IDEs) including IAR™, Keil®, andSTM32CubeIDE

Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

UM2488Features

UM2488 - Rev 5 page 2/56

2 Ordering information

To order the STM32H745I-DISCO and STM32H750B-DK Discovery kits, refer to Table 1. Additional information isavailable from the datasheet and reference manual of the target STM32.

Table 1. List of available products

Order code Board reference Target STM32

STM32H745I-DISCOMB1381

STM32H745XIH6U

STM32H750B-DK STM32H750XBH6U

2.1 Product marking

Evaluation tools marked as “ES” or “E” are not yet qualified and therefore not ready to be used as referencedesign or in production. Any consequences deriving from such usage will not be at ST charge. In no event, ST willbe liable for any customer usage of these engineering sample tools as reference designs or in production.“E” or “ES” marking examples of location:• On the targeted STM32 that is soldered on the board (For an illustration of STM32 marking, refer to the

STM32 datasheet “Package information” paragraph at the www.st.com website).• Next to the evaluation tool ordering part number that is stuck or silk-screen printed on the board.

Some boards feature a specific STM32 device version, which allows the operation of any bundled commercialstack/library available. This STM32 device shows a "U" marking option at the end of the standard part numberand is not available for sales.In order to use the same commercial stack in his application, a developer may need to purchase a part numberspecific to this stack/library. The price of those part numbers includes the stack/library royalties.

2.2 Codification

The meaning of the codification is explained in Table 2.

Table 2. Codification explanation

STM32H7XXY-DISCOSTM32H7XXY-DK Description Example: STM32H745I-DISCO

STM32H7 MCU series in STM32 Arm Cortex MCUs STM32H7 Series

XX MCU product line in the series STM32H745

YSTM32 Flash memory size:• B for 128 Kbytes• I for 2 Mbytes

2 Mbytes

DISCO / DK Discovery kit Discovery kit

The order code is mentioned on a sticker placed on the top or bottom side of the board.

UM2488Ordering information

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https://www.st.com

3 Development environment

3.1 System requirements

• Windows® OS (7, 8 and 10), Linux® 64-bit, or macOS®

• USB Type-A to Micro-B cable

Note: macOS® is a trademark of Apple Inc. registered in the U.S. and other countries.All other trademarks are the property of their respective owners.

3.2 Development toolchains

• IAR™ - EWARM (see note)• Keil® - MDK-ARM (see note)• STMicroelectronics - STM32CubeIDE

Note: On Windows® only.

3.3 Demonstration software

The demonstration software, included in the STM32Cube MCU Package corresponding to the on-boardmicrocontroller, is preloaded in the STM32 Flash memory for easy demonstration of the device peripherals instandalone mode. The latest versions of the demonstration source code and associated documentation can bedownloaded from www.st.com.

UM2488Development environment

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https://www.st.com

4 Conventions

Table 3 provides the conventions used for the ON and OFF settings in the present document.

Table 3. ON/OFF convention

Convention Definition

Jumper JPx ON Jumper fitted

Jumper JPx OFF Jumper not fitted

Jumper JPx [1-2] Jumper should be fitted between Pin 1 and Pin 2

Solder bridge SBx ON SBx connections closed by 0 Ω resistor

Solder bridge SBx OFF SBx connections left open

Resistor Rx ON Resistor soldered

Resistor Rx OFF Resistor not soldered

UM2488Conventions

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5 Delivery recommendations

Before the first use, make sure that no damage occurred to the board during shipment and no socketedcomponents are not firmly fixed in their sockets or loose in the plastic bag.

UM2488Delivery recommendations

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6 Hardware layout and configuration

The STM32H745I-DISCO and STM32H750B-DK Discovery kits are designed around the STM32H745XIH6 andSTM32H750XBH6 microcontrollers, respectively. Both microcontrollers are packaged in TFBGA240+25. Thehardware block diagram (see Figure 3) illustrates the connection between the microcontroller and the peripherals(SDRAM, eMMC, Quad-SPI Flash memory, CAN FD (FDCAN), LCD RGB connector, USB OTG connectors,UART, Ethernet, Audio, TAG connector, STDC connector, ARDUINO® Uno shields and embedded ST-LINK).Figure 4 and Figure 5 help to locate these features on the STM32H745I-DISCO and STM32H750B-DK boards.

Figure 3. Hardware block diagram

STM32H745XI/STM32H750XBin TFGA240+25

RTC

UART3

FMC

OTG

FDCAN1/2

SDMMC1

QSPI

PWR

32.768 kHz crystal

STLINK-V3E

128 Mbit SDRAM

USB connector

2x FDCANs

4 Gbyte eMMC

2x512 Mbit Quad-SPI Flash memory

Power supply

STMod+ connector

ARD connector

MII

I2C4

TAG connector SWD

STDC connector

Ethernet

LCD 4.3 inch RGB LCD

SAI2Audio Codec

PDM

SPI2

POE

UART2

UART1

UM2488Hardware layout and configuration

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6.1 STM32H745I-DISCO and STM32H750B-DK layout

Figure 4. STM32H745I-DISCO and STM32H750B-DK Discovery board top layout

B1 reset button

B2 user button

CN1 Ethernet connector

LD6/LD7/LD8 user LEDs

JP8 power header

U33 RGB LCD connector

U34 MEMS microphone

P1 STMod+ connector

CN16 TAG connector

UM2488STM32H745I-DISCO and STM32H750B-DK layout

UM2488 - Rev 5 page 8/56

Figure 5. STM32H745I-DISCO and STM32H750B-DK Discovery board bottom layout

CN1 Ethernet connector

JP8 power header

U6 MCU

U7 SDRAM

U1, U2 QSPI

CN12, CN16 Arduino connectors

CN15 USB power connector

CN14 STLK USB connector

CN3, CN7 Arduino connectors

CN13 USB OTG_FS connector

U21, U22 FDCANs

U11 eMMC

CN8 line in connector

CN9 line out connector

P1 STMod+ connector

CN14 STDC14 connector

U15 Audio Codec

UM2488STM32H745I-DISCO and STM32H750B-DK layout

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6.2 STM32H745I-DISCO and STM32H750B-DK mechanical drawing

Figure 6 shows the mechanical dimensions of the STM32H745I-DISCO and STM32H750B-DK boards.

Figure 6. STM32H745I-DISCO and STM32H750B-DK Discovery board mechanical drawing (bottom view)

6.3 Embedded STLINK-V3E

The STLINK-V3E programming and debugging tool is integrated into the STM32H745I-DISCO andSTM32H750B-DK Discovery kits. It supports:• USB software re-enumeration• Virtual COM port interface on USB• Mass storage interface on USB• USB power management request for more than 100 mA power on USB

The USB connector (CN14) can be used to power the STM32H745I-DISCO and STM32H750B-DK regardless ofthe STLINK-V3E facility used for debugging or programming the STM32H745XIH6 and STM32H750XBH6. Thisholds also when the STLINK-V3E standalone tool is connected to CN4 or CN16 connector and used fordebugging or programming the STM32H745XIH6 and STM32H750XBH6. Section 6.4 Power supply providesmore details about STM32H745I-DISCO and STM32H750B-DK powering.Refer to www.st.com for details about STLINK-V3E.

UM2488STM32H745I-DISCO and STM32H750B-DK mechanical drawing

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http://www.st.com

Drivers and firmware upgrade

The STLINK-V3E requires drivers to be installed on Windows®. It embeds a firmware that needs to be updatedfrom time to time in order to benefit from new functionalities and bug corrections. Refer to technical note Overviewof ST-LINK derivatives (TN1235) for details.

6.4 Power supply

The STM32H745I-DISCO and STM32H750B-DK Discovery kits are designed to be powered from a 5 V DC powersource. Either of the following five 5 V DC power inputs can be used, upon appropriate board configuration:• Micro-B USB receptacle CN14 of STLINK-V3E without enumeration: up to 500 mA can be supplied to the

board (JP8 jumper setting on CHGR position on the silkscreen).• 7 to 12 V DC power from CN3 pin 8: named VIN on the silkscreen, extension connectors for ARDUINO®

Uno shields or daughterboard (JP8 jumper setting on E5V on the silkscreen).• 48 V DC power from RJ45 connector CN1 (Ethernet):

In this case, the on-board module PoE (Power over Ethernet) generates the 5 V supply voltage with up to600 mA. This module is a powered device complying with IEEE 802.3af, class 1 / 2 standard. The externalpower supply must be fully IEEE 802.3af compliant (JP8 jumper setting on POE5V on the silkscreen).

• Micro-AB USB receptacle CN13 of the USB OTG_FS interface: marked USB OTG FS on the board (JP8jumper setting on USBFS on the silkscreen), and supplying up to 500 mA to the board.

• Micro-B USB receptacle CN15 of the USB power: marked USB PWR on the board (JP8 jumper setting onUSBPWR on the silkscreen), and supplying up to 500 mA to the board.

• Micro-B USB receptacle CN14 of STLINK-V3E with enumeration: with enumeration feature (see Supplyingthe board through the STLINK-V3E USB port), up to 500 mA can be supplied to the board (JP8 jumpersetting on STLK on the silkscreen).

The LD4 green LED turns ON when the voltage on the power line marked as +5 V is present. All the supplyvoltage lines required for the operation of the STM32H745I-DISCO/STM32H750B-DK components are derivedfrom this +5 V line.

Supplying the board through the STLINK-V3E USB port

To power the STM32H745I-DISCO and STM32H750B-DK in this way, the USB host (a PC) gets connected to theMicro-B USB receptacle of the board via a USB cable. The connection event starts the USB enumerationprocedure. In its initial phase, the host USB port current supply capability is limited to 100 mA. This is sufficientsince only the STLINK-V3E part of the STM32H745I-DISCO/STM32H750B-DK draws power at that time: the U24STMPS2151 power switch is set to the OFF position, which isolates the rest of the board from the power source.In the next phase of the enumeration procedure, the host PC informs the STLINK-V3E that it is able to supplycurrent up to 300 mA. If the answer is positive, the STLINK-V3E sets the U24 STMPS2151 switch to the ONposition to supply power to the rest of the board. Otherwise, CN3 pin 8 (VIN) or CN15 can be used to supply theboard instead.Should a short-circuit occur on the board, the STMPS2151 power switch protects the USB port of the host PCagainst a current demand exceeding 500 mA, In such an event, the LD4 LED lights up.The STM32H745I-DISCO and STM32H750B-DK boards can also be supplied from a USB power source thatdoes not support enumeration, such as a USB charger. In this particular case, JP6 jumper must be ON with ajumper hat as shown in Table 4. Power-supply related jumper and solder bridge settings. STLINK-V3E bypassesSTMPS2151 power regardless of the enumeration procedure result and passes the power unconditionally to theboard.The LD4 green LED turns ON whenever the whole board is powered.

Using STLINK-V3E along with powering through external power

It can happen that the board requires a supply current higher than 300 mA. It consequently cannot be suppliedfrom host PC connected to STLINK-V3E USB port for debugging or programming the STM32H745XIH6 orSTM32H750XBH6 microcontroller. In such a case, the board can be supplied through CN3 pin 8 (marked VIN onthe board) or by CN15.To do this, it is important to power the board before connecting it with the host PC, which requires the followingsequence to be respected:

UM2488Power supply

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1. Set jumper JP8 in the E5V or CHGR position.2. Connect the external power source to CN3 pin 8 or CN15.3. Check that the green LED LD4 is turned ON.4. Connect the host PC to USB connector CN14.

Caution: If the board requests more than 300 mA and the host PC is connected via USB before the board is poweredfrom CN3 pin 8 or CN15, the following events may occur (listed in reverse severity order):1. The host PC is capable of supplying 300 mA (the enumeration succeeds) but does not feature any over-

current protection on its USB port. It is damaged due to over-current.2. The host PC is capable of supplying 300 mA (the enumeration succeeds) and it has a built-in over-current

protection on its USB port, limiting or shutting down the power out of its USB port when the excessivecurrent demand from STM32H745I-DISCO/STM32H750B-DK is detected. This causes an operating failureof the board.

3. The host PC is not capable of supplying 300 mA (the enumeration fails). The STLINK-V3E does not supplythe rest of the STM32H745I-DISCO/STM32H750B-DK from its USB port VBUS line.

SMPS/LDO power supply

There are three solutions to provide power to the microcontroller VCORE logic supply: SMPS, LDO, and SMPSand LDO. Power consumption in Run mode is significantly improved by generating VCORE from the internalDC/DC converter (SMPS) and the default connection must be set to SMPS. Some modifications are required tosupply the microcontroller from the LDO. Below the board configuration for each case:• LDO mode (default on the STM32H750XB): mount SB6, SB17 and SB45; remove SB5, SB18, SB26, SB27,

SB44, SB46 and L4.• SMPS mode (default on the STM32H745XI): mount SB5, SB18, SB44, SB46 and L4; remove SB6, SB17,

SB27, SB26 and SB45.• SMPS plus LDO mode: mount SB6, SB17, SB44, SB46 and L4; remove SB26, SB5, SB18, SB27 and SB45.

Caution: A deadlock occurs if the STM32H745I-DISCO SMPS/LDO firmware PWR configuration does not match theboard hardware configuration: after the reset, the ST-LINK cannot connect the target anymore.The firmware PWR configuration must be set as follows in function SystemClock_Config in file main.c:• If the hardware configuration is Direct SMPS (default configuration):

HAL_PWREx_ConfigSupply(PWR_DIRECT_SMPS_SUPPLY);• If the hardware configuration is LDO:

HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);If a deadlock occurs because of a mismatch between hardware and firmware PWR settings (SMPS/LDO), theuser can recover the STM32H745I-DISCO board by applying the following procedure:1. Power off the board.2. Remove the 10 kΩ resistor from R143 and mount it on R144.

This changes the BOOT0 pin to 1 instead of 0, thus changing the device boot address to boot address 1and making the bootloader start in System memory. This avoids starting firmware in the user Flash with awrong SMPS/LDO configuration versus the hardware board configuration.

3. Power on the board and connect using STM32CubeProgrammer (STM32CubeProg).4. Erase the user Flash.5. Power off the board and remove the 10 kΩ resistor from R144 and mount it back on R143.6. The board is recovered and can be used normally with matching firmware PWR.

UM2488Power supply

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https://www.st.com/en/product/stm32cubeprog?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2488

Table 4. Power-supply related jumper and solder bridge settings describes the settings of all the jumpers relatedto the powering of the STM32H745I-DISCO/STM32H750B-DK and the extension board. VDD_MCU correspondsto the STM32H745XIH6/STM32H750XBH6 digital supply voltage line. It can be connected to a fixed 3.3 V supply.

Table 4. Power-supply related jumper and solder bridge settings

Jumper/Solder bridge Setting Configuration

JP8

Power source selector

CH

GR

ESV

POE5V

USBFS

STLK

The STM32H745I-DISCO/STM32H750B-DK is supplied through the CN14 Micro-BUSB receptacle.

CH

GR

ESV

POE5V

USBFS

STLK

The STM32H745I-DISCO/STM32H750B-DK is supplied through the pin 8 of CN3(marked VIN).

CH

GR

ESV

POE5V

USBFS

STLK

The STM32H745I-DISCO/STM32H750B-DK is supplied through the RJ45 connectorCN1.

CH

GR

ESV

POE5V

USBFS

STLK

The STM32H745I-DISCO/STM32H750B-DK is supplied through the CN13 Micro-ABUSB receptacle.

CH

GR

ESV

POE5V

USBFS

STLKDefault setting

The STM32H745I-DISCO/STM32H750B-DK is supplied through the CN14 Micro-BUSB receptacle. It depends on host PC USB port powering capability declared in theenumeration.

SB23

VBAT connection

SB23 ONDefault setting

VBAT is connected to +3V3.

SB23 OFF VBAT is not connected to +3V3.

SB15

VDD_USB connection

SB15 ONDefault setting.

VDD_USB (VDDUSB terminal of STM32H745XIH6/STM32H750XBH6) is connectedto VDD_MCU.

SB15 OFF VDD_USB is not connected to VDD_MCU.

JP1

VDD_MCU connection

Default setting

VDD_MCU (VDD terminals of STM32H745XIH6/STM32H750XBH6) is connected tofixed +3.3 V.

VDD_MCU (VDD terminals of STM32H745XIH6/STM32H750XBH6) is not connectedto fixed +3.3 V

Note: STM32H750B-DK only supports the LDO mode.

6.5 Clock sources

Three clock sources are available on the STM32H745I-DISCO and STM32H750B-DK boards:• X1: 25 MHz oscillator for STM32H745XIH6/STM32H750XBH6 microcontroller and Ethernet PHY.• X2: 32.768 kHz crystal for STM32H745XIH6/STM32H750XBH6 embedded RTC• X3: 25 MHz oscillator for STLK.

UM2488Clock sources

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6.6 Reset sources

The reset signal of the STM32H745I-DISCO and STM32H750B-DK Discovery kits is active low. The resetsources include:• B2 reset button• ARDUINO® Uno shield board from CN3• Embedded STLINK-V3E• TAG connector• STDC14 receiver• eMMC• Ethernet

6.7 Audio

An audio Codec WM8994ECS/R from CIRRUS with four DACs and two ADCs is connected to theSTM32H745XIH6 and STM32H750XBH6 SAI interface. It communicates with the STM32H745XIH6 andSTM32H750XBH6 microcontrollers via an I2C bus shared with the touchpanel of the RGB LCD, ARDUINO® andSTMod+ connectors.• The analog input line is connected to the WM8994ECS/R ADC through the blue audio jack (CN8).• The analog output line is connected to the WM8994ECS/R DAC via the green audio jack (CN9).• Two external speakers can be connected to WM8994ECS/R via CN18 for left speaker and CN17 for right

speaker.• The STM32H745I-DISCO and STM32H750B-DK feature one digital MP34DT01TR microphones (ST MEMs

microphone). They are connected to the input digital microphones of the STM32H745XIH6/STM32H750XBH6 and are managed by the PDM functionality.

6.8 USB OTG_FS

The STM32H745I-DISCO and STM32H750B-DK boards support USB OTG full-speed communications via theCN13 USB Micro-AB connector.The USB connectors can power the Discovery kit with a 5 V DC supply voltage, at a current up to 500 mA.A USB power switch is also connected to VBUS and provides power to CN13. The green LED LD1 is lit wheneither one of the following event occurs:• The power switch is ON and the STM32H745I-DISCO/STM32H750B-DK operate as a USB host.• VBUS is powered by another USB host when the STM32H745I-DISCO/STM32H750B-DK operate as a USB

device.

The red LED LD5 is lit when an overcurrent occurs.

Note: The STM32H745I-DISCO and STM32H750B-DK boards must be powered by external power supply when usingthe OTG function.

6.9 eMMC

The STM32H745I-DISCO and STM32H750B-DK embed a 4-Gbyte eMMC chip. It is connected to theSTM32H745XIH6 and STM32H750XBH6 SDMMC1 port.

6.10 Ethernet

The STM32H745I-DISCO and STM32H750B-DK boards support 10M/100M Ethernet communications by aMICROCHIP LAN8740Ai-EN-TR PHY, which supports IEEE 802.3az Energy Efficient Ethernet (EEE) andintegrated RJ45 connector CN1. The Ethernet PHY is connected to the STM32H745XIH6/STM32H750XBH6microcontroller through an MII interface.The PHY 25 MHz clock is generated from the X1 oscillator, while the STM32H745XIH6/STM32H750XBH650 MHz clock is generated by the PHY MII_REF_CLK.

UM2488Reset sources

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6.11 Power over Ethernet

The STM32H745I-DISCO and STM32H750B-DK Discovery boards embed a power module that uses Ethernet.This module is an IEEE802.3af compliant class 1 / 2 PoE converter, based on a simple diode rectified Flybacktopology built around ST PM8800A component. This “powered device” module accepts a 48 V input voltage andcan deliver 5 V with 600 mA.

6.12 SDRAM

A 128-Mbit SDRAM (MT48LC4M32B2B5-6A IT_L TR from MICRON) is connected to the STM32H745XIH6/STM32H750XBH6 FMC interface.

6.13 Quad-SPI NOR Flash memory

By default, two 512-Mbit Quad-SPI NOR Flash memories (MT25QL512ABB8ESF-0SIT from MICRON) areconnected to the STM32H745XIH6/STM32H750XBH6 Quad-SPI interface. A single 1-Gbit Quad-SPI NOR Flashmemory (MT25TL01GHBB8ESF-0SIT from MICRON) can also be plugged on the board. In this case, configurethe board as follows:• U1/U2/R14/R3/R2/R9/SB2/C15 ON• R53/R62/R54/R56/R60/SB8/SB48 OFF

6.14 Virtual COM port

The USART3 serial interface is directly available as a virtual COM port of the PC, connected to the STLINK-V3USB connector ( CN14). The virtual COM port settings as the following:• 115200 baud• 8-bit data• No parity• 1 stop bit• no flow control

6.15 RGB LCD display

The on-board color display is a 4.3 inch 480x272 LCD-TFT with capacitive touchpanel. It is connected to theSTM32H745XIH6/STM32H750XBH6 LCD interface.

6.16 Buttons and LEDs

The black button (B2), located on the board top side, is the reset of the STM32H745XIH6 and STM32H750XBH6microcontrollers. Refer to Figure 4. STM32H745I-DISCO and STM32H750B-DK Discovery board top layout. Theblue button (B1), located on the top side, is available to be used as a digital input or as Wakeup alternate function.Table 5 summarizes the assignment of the control ports to the LED indicators.

Table 5. Assignment of control ports to LED

reference Color Name Comment

B1 BLUE USER Wakeup alternate function

B2 BLACK RESET -

LD1 GREEN VBUS USB FS PA9

LD2 GREEN/RED STLK COM Green when communication ongoing

LD3 RED STLK Over Current -

LD4 GREEN PWR -

LD5 GREEN OTG Over Current PH11

UM2488Power over Ethernet

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reference Color Name Comment

LD6 RED USER1 PJ2

LD7 GREEN USER2 PI13

LD8 GREEN ARDUINO PD3

UM2488Buttons and LEDs

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7 Connectors

7.1 ARDUINO® Uno V3 connectors

CN2, CN3, CN6 and CN7 are female connectors compatible with the ARDUINO® standard. Most shieldsdesigned for ARDUINO® can fit to the STM32H745I-DISCO and STM32H750B-DK Discovery kits. TheSTM32H745I-DISCO/STM32H750B-DK ARDUINO® connectors support ARDUINO® Uno V3.

Caution: The STM32 microcontroller I/Os are 3.3 V compatible instead of 5 V for ARDUINO® Uno.

Table 6. ARDUINO® connectors (CN2, CN3, CN6, and CN7)

Left connectors Right connectors

CNnumber

Pinnumber

Pinname

Microcontrollerpin Function Function Microcontroller

pinPin

namePin

numberCN

number

-

I2C1_SCL PD12 D15 10

CN2

digital

I2C1_SDA PD13 D14 9

AVDD - AREF 8

Ground - GND 7

CN3

power

1 NC - - SPI2_SCK PD3 D13 6

2 IOREF - 3.3V Ref SPI2_MISO PI2 D12 5

3 RESET NRST RESET TIM12_CH2,SPI2_MOSI PB15 D11 4

4 3V3 -3.3V

input/outputTIM3_CH1,SPI2_NSS PB4 D10 3

5 5V - 5Voutput TIM8_CH3N PH15 D9 2

6 GND - Ground - PE3 D8 1

7 GND - Ground -

8 VIN - Power input - PI8 D7 8

CN6

digital

- TIM15_CH2 PE6 D6 7

CN7

analog

1 A0 PC0 ADC123_IN10 TIM1_CH1 PA8 D5 6

2 A1 PF8 ADC3_IN7 - PK1 D4 5

3 A2 PA0_C ADC12_IN0 TIM3_CH1 PA6 D3 4

4 A3 PA1_C ADC12_IN1 - PG3 D2 3

5 A4 PC2_C or PD13

ADC3_IN0(PC2) or

I2C1_SDA(PD13)

USART1_TX PB6 D1 2

6 A5 PC3_C or PD12

ADC3_IN1(PC3) or

I2C1_SCL(PD12)

USART1_RX PB7 D0 1

UM2488Connectors

UM2488 - Rev 5 page 17/56





7.2 CN13 USB OTG_FS Micro-AB connector

Figure 7. CN13 USB OTG Micro-AB connector (front view)

Table 7. CN13 USB OTGFS micro-AB connector

Pin number Description Pin number Description

1 VBUS 4 ID

2 D- 5 GND

3 D+ - -

7.3 CN1 Ethernet RJ45 connector

Figure 8. CN1 Ethernet RJ45 connector (front view)

Table 8. CN1 Ethernet RJ45 connector


1 TX+ 7 Nc7

2 TX- 8 Nc8

3 RX+ 9 K, yellow LED

4 Nc4 10 A, yellow LED

5 Nc5 11 K, green LED

6 RX- 12 A, green LED

UM2488CN13 USB OTG_FS Micro-AB connector

UM2488 - Rev 5 page 18/56

7.4 LCD RGB connector

Figure 9. LCD RGB connector (footprint)

Table 9. LCD RGB connector

Description Pin connection Pin number Description Pin connection

1 LCD_BL_K - 2 LCD_BL_A -

3 GND - 4 VDD -

5 LCD_R0 PI15 6 LCD_R1 PJ0

7 LCD_R2 PJ1 8 LCD_R3 PH9

9 LCD_R4 PJ3 10 LCD_R5 PJ4

11 LCD_R6 PJ5 12 LCD_R7 PJ6

13 LCD_G0 PJ7 14 LCD_G1 PJ8

15 LCD_G2 PJ9 16 LCD_G3 PJ10

17 LCD_G4 PJ11 18 LCD_G5 PI0

19 LCD_G6 PI1 20 LCD_G7 PK2

21 LCD_B0 PJ12 22 LCD_B1 PJ13

23 LCD_B2 PJ14 24 LCD_B3 PJ15

25 LCD_B4 PK3 26 LCD_B5 PK4

27 LCD_B6 PK5 28 LCD_B7 PK6

29 GND - 30 LCD_CLK PI14

31 LCD_DISP PD7 32 LCD_HSYNC PI12

33 LCD_VSYNC PI9 34 LCD_DE PK7

35 GND - 36 GND -

37 LCD_RST - 38 LCD_INT PG2

39 LCD_SCL PD12 40 LCD_SDA PD13

UM2488LCD RGB connector

UM2488 - Rev 5 page 19/56

7.5 CN2 STMod+ connector

An STMod+ connector is available on the STM32H745I-DISCO and STM32H750B-DK Discovery kits. It providesflexibility in small form factor applications. In addition, the STMod+ connector expands the SPI interface and freesI/Os that can be used by other peripheral expansions.

Table 10. CN2 STMod+ connector


1 SS/CTS (PA15/PA0) 11 INT (PH12)

2 MOSI/TXD (PB15/PD5) 12 RESET (PH10)

3 MISO/RXD (PI2/PD6) 13 ADC (PA4)

4 SCK/RTS (PD3/PD4) 14 PWM (PA3)

5 GND 15 5V

6 5V 16 GND

7 I2C_SCL (PD12) 17 GPIO (PH1)

8 MOSIs (PI3) 18 GPIO (PI11)

9 MISOs (PB14) 19 GPIO(PH4)

10 I2C_SDA (PD13) 20 GPIO(PH8)

7.6 CN14 STLINK-V3 USB Micro-B connector

The CN14 USB connector is used to connect the embedded STLINK-V3E to the host PC in order to program anddebug the STM32H745XIH6/STM32H750XBH6 microcontroller.

Figure 10. CN14 USB Micro-B connector (front view)

Table 11. CN14 USB Type-B connector


1 VBUS (power) 4 GND

2 DM 5, 6 Shield

3 DP - -

7.7 Audio stereo speaker header connectors (CN17 and CN18)

The stereo audio outputs, CN17 and CN18, can support the left and right stereo speakers, respectively.

7.8 CN9 audio line output (green jack) connector

A 3.5 mm stereo audio green jack output, CN9, can support the headphone.

UM2488CN2 STMod+ connector

UM2488 - Rev 5 page 20/56



7.9 CN8 audio line input (blue jack) connector

A 3.5 mm stereo audio green jack input, CN8, can support the audio line input.

7.10 CN16 TAG connector

The CN16 TAG connector is used to connect the STM32H745XIH6/STM32H750XBH6 microcontroller for theboard programming and debugging.

Figure 11. CN16 TAG debugging connector (top view)

Table 12. CN16 TAG connector


1 VDD 10 RESET#

2 SWDIO(PA13) 9 NA

3 GND 8 TDI(PA15)

4 SWCLK(PA14) 7 NA

5 GND 6 SWO(PB3)

7.11 CN4 STDC14 connector

The STDC14 connector can be used to program/debug the microcontroller in an external application board usinga cable connected to the CN4 SWD connector.

Table 13. STDC14 connector


1 NC 8 T_SWO

2 NC 9 NC

3 3V3 10 T_JTDI

4 T_SWDIO 11 GNDDETECT

5 GND 12 T_NRST

6 T_SWCLK 13 T_VCP_RX

7 GND 14 T_VCP_TX

UM2488CN8 audio line input (blue jack) connector

UM2488 - Rev 5 page 21/56

7.12 CN15 USB power connector

Figure 12. CN15 USB Micro-B connector (front view)

Table 14. CN15 USB Micro-B connector


1 VBUS 4 NC

2 NC 5 GND

3 NC - -

UM2488CN15 USB power connector

UM2488 - Rev 5 page 22/56

8 STM32H745I-DISCO and STM32H750B-DK I/O assignment

Table 15. STM32H745I-DISCO and STM32H750B-DK I/O assignment

Pin name Pin number Signal or label Comment

PA0 N5 STMOD#1-CTS -

PA1 N4 MII_RX_CLK -

PA2 N3 MII_MDIO -

PA3 U2 STMOD#14-PWM -

PA4 U3 STMOD#13-ADC -

PA5 T3 OTG_FS2_PSO -

PA6 R3 ARD_D3 -

PA7 R5 MII_RX_DV -

PA8 E5 ARD_D5 -

PA9 D15 VBUS_FS2 -

PA10 D14 USB_OTG_FS2_ID -

PA11 E17 USB_OTG_FS2_N -

PA12 E16 USB_OTG_FS2_P -

PA13 C15 SWDIO SWDIO

PA14 B14 SWCLK SWCLK

PA15 A14 STMOD#1_SPI_CS||T_JTDI -

PB0 U5 MII_RXD2 -

PB1 T5 MII_RXD3 -

PB2 R6 MII_TX_ER -

PB3 C6 SWO -

PB4 B7 ARD_D10 -

PB5 A5 FDCAN2_RX -

PB6 B5 ARD_D1 -

PB7 C5 ARD_D0 -

PB8 D5 SDIO1_D4 -

PB9 D4 SDIO1_D5 -

PB10 P11 VCP_TX -

PB11 P12 VCP_RX -

PB12 T14 LCD_RST -

PB13 U14 FDCAN2_TX -

PB14 U15 STMOD#9-MISOs -

PB15 T15 ARD_D11 -

PC0 L2 ARD_A0 -

PC1 M2 MII_MDC -

PC2 M3 MII_TXD2 -

PC3 M4 MII_TX_CLK -

PC4 T4 MII_RXD0 -

UM2488STM32H745I-DISCO and STM32H750B-DK I/O assignment

UM2488 - Rev 5 page 23/56


PC5 U4 MII_RXD1 -

PC6 F14 SDIO1_D6 -

PC7 F13 SDIO1_D7 -

PC8 E13 SDIO1_D0 -

PC9 E14 SDIO1_D1 -

PC10 A13 SDIO1_D2 -

PC11 B13 SDIO1_D3 -

PC12 C12 SDIO1_CK -

PC13 E3 WAKEUP -

PC14 C2 OSC32_IN -

PC15 C1 OSC32_OUT -

PD0 D13 SDRAM_D2 -

PD1 E12 SDRAM_D3 -

PD2 D12 SDIO1_CMD -

PD3 B12 ARD_D13 -

PD4 A12 STMOD#4-RTS -

PD5 A11 STMOD#2-TX -

PD6 B11 STMOD#3-RX -

PD7 C11 LCD_DISP -

PD8 U16 SDRAM_D13 -

PD9 T17 SDRAM_D14 -

PD10 T16 SDRAM_D15 -

PD11 R15 QSPI_BK1_IO0 -

PD12 R16 IIC4_SCL -

PD13 R17 IIC4_SDA -

PD14 P16 SDRAM_D0 -

PD15 P15 SDRAM_D1 -

PE0 C4 SDRAM_NBL0 -

PE1 B4 SDRAM_NBL1 -

PE2 C3 MII_TXD3 -

PE3 D3 ARD_D8 -

PE4 D2 SAI4_D2 -

PE5 D1 SAI4_CK2 -

PE6 E5 ARD_D6 -

PE7 U9 SDRAM_D4 -

PE8 T9 SDRAM_D5 -

PE9 P9 SDRAM_D6 -

PE10 N9 SDRAM_D7 -

PE11 P10 SDRAM_D8 -

PE12 R10 SDRAM_D9 -


UM2488 - Rev 5 page 24/56


PE13 T10 SDRAM_D10 -

PE14 U10 SDRAM_D11 -

PE15 R11 SDRAM_D12 -

PF0 G4 SDRAM_A0 -

PF1 G3 SDRAM_A1 -

PF2 G1 SDRAM_A2 -

PF3 H4 SDRAM_A3 -

PF4 J5 SDRAM_A4 -

PF5 J4 SDRAM_A5 -

PF6 K2 QSPI_BK1_IO3 -

PF7 K3 QSPI_BK1_IO2 -

PF8 K4 ARD_A1 -

PF9 L4 QSPI_BK1_IO1 -

PF10 L3 QSPI_CLK -

PF11 T7 SDRAM_SDNRAS -

PF12 R7 SDRAM_A6 -

PF13 P7 SDRAM_A7 -

PF14 P8 SDRAM_A8 -

PF15 R9 SDRAM_A9 -

PG0 T8 SDRAM_A10 -

PG1 U8 SDRAM_A11 -

PG2 H16 LCD_INT -

PG3 H15 ARD_D2 -

PG4 H14 SDRAM_BA0 -

PG5 G14 SDRAM_BA1 -

PG6 G15 RCC_OSC_OUT -

PG7 F16 Audio_Int -

PG8 F15 SDRAM_SDCLK -

PG9 A10 QSPI_BK2_IO2 -

PG10 A9 SAI2_SDB -

PG11 B9 MII_TX_EN -

PG12 C9 MII_TXD1 -

PG13 D9 MII_TXD0 -

PG14 D8 QSPI_BK2_IO3 -

PG15 D6 SDRAM_SDNCAS -

PH0 J2 OSC_25M -

PH1 J1 STMOD#17 -

PH2 N2 QSPI_BK2_IO0||MII_CRS -

PH3 P2 QSPI_BK2_IO1||MII_COL -

PH4 P3 STMOD#19 -


UM2488 - Rev 5 page 25/56


PH5 P4 SDRAM_SDNWE -

PH6 T11 SDRAM_SDNE1 -

PH7 U13 SDRAM_SDCKE1 -

PH8 T13 STMOD#20 -

PH9 R13 LCD_R3 -

PH10 P13 STMOD#12-RST -

PH11 P14 OTG_FS2_Overcurrent -

PH12 R14 STMOD#11-INT -

PH13 D16 FDCAN1_TX -

PH14 B17 FDCAN1_RX -

PH15 PF6 ARD_D9 -

PI0 A16 LCD_G5 -

PI1 A15 LCD_G6 -

PI2 B15 ARD_D12 -

PI3 C14 STMOD#8-MOSIs -

PI4 A4 SAI2_MCLKA -

PI5 A3 SAI2_SCKA -

PI6 A2 SAI2_SDA -

PI7 B3 SAI2_FSA -

PI8 E4 ARD_D7 -

PI9 E2 LCD_VSYNC -

PI10 F3 MII_RX_ER -

PI11 F4 STMOD#18 -

PI12 H1 LCD_HSYNC -

PI13 H2 LED2 -

PI14 H3 LCD_CLK -

PI15 P5 LCD_R0 -

PJ0 N6 LCD_R1 -

PJ1 P6 LCD_R2 -

PJ2 T6 LED1 -

PJ3 U6 LCD_R4 -

PJ4 U7 LCD_R5 -

PJ5 R12 LCD_R6 -

PJ6 N15 LCD_R7 -

PJ7 N14 LCD_G0 -

PJ8 N13 LCD_G1 -

PJ9 M14 LCD_G2 -

PJ10 L14 LCD_G3 -

PJ11 K14 LCD_G4 -

PJ12 D11 LCD_B0 -


UM2488 - Rev 5 page 26/56


PJ13 E10 LCD_B1 -

PJ14 D10 LCD_B2 -

PJ15 B10 LCD_B3 -

PK0 J14 LCD_BL -

PK1 J15 ARD_D4 -

PK2 H17 LCD_G7 -

PK3 C8 LCD_B4 -

PK4 B8 LCD_B5 -

PK5 A8 LCD_B6 -

PK6 C7 LCD_B7 -

PK7 D7 LCD_DE -

- L16 DSI_CK_P NC

- L17 DSI_CK_N NC

- M16 DSI_D0_P NC

- M17 DSI_D0_N NC

- K16 DSI_D1_P NC

- K17 DSI_D1_N NC

- T1 ARD_A2 -

- T2 ARD_A3 -

- R1 ARD_A4 -

- R2 ARD_A5 -

- E9 VDD ARD_D7

- E11 VDD -

- F5 VDD -

- G5 VDD -

- G13 VDD -

- H5 VDD EXT_RST

- H13 VDD -

- J13 VDD -

- K13 VDD -

- L13 VDD -

- M13 VDD ARD_A0

- N12 VDD -

- N11 VDD -

- N10 VDD -

- N7 VDD DSIHOST_TE

- L5 VDD -

- K5 VDD -

- E6 VDD -

P11 F1 VDDIO_SD1 -


UM2488 - Rev 5 page 27/56


P12 E1 VLX -

P13 F2 VSSIO_SD -

P14 U11 VCAP1 -

P15 D17 VCAP2 -

R1 A7 VCAP3 -

R2 N8 VDDIO1 -

R3 M5 VDDIO2 -

R4 U12 VDDIO33_LDO1 -

R5 C17 VDDIO33_LDO2 -

R6 A6 VDDIO33_LDO3 -

R7 G17 VDD50_USB -

R8 F17 VDD_USB33 -

- L1 VDDA -

- M1 VREF+ -

- B1 VBAT -

- A1 VSS -

- C10 VSS -

- C13 VSS -

- C16 VSS -

- G16 VSS -

- J3 VSS -

- N16 VSS -

- U17 VSS -

- T12 VSS -

- R8 VSS -

- L9 VSS -

- L11 VSS -

- K10 VSS -

- K11 VSS -

- A17 VSS -

- L10 VSS -

- B6 VSS -

- B2 VSS -

- R2 VSS -

- G7 VSS -

- G8 VSS -

- G9 VSS -

- G10 VSS -

- G11 VSS -

- H7 VSS -


UM2488 - Rev 5 page 28/56


- H8 VSS -

- H9 VSS -

- H10 VSS -

- H11 VSS -

- J7 VSS -

- J8 VSS -

- J9 VSS -

- J10 VSS -

- J11 VSS -

- K7 VSS -

- K8 VSS -

- K9 VSS -

- L7 VSS -

- L8 VSS -

- U1 VSS -

- P1 VSSA -

- N1 VREF- -

- P17 VDD33_DSI -

- N17 VDD12_DSI_CAP -

- J16 VSSDSI1 -

- J17 VSSDSI2 -

- K15 VSSDSI3 -

- L15 VSSDSI4 -

- M15 VSSDSI5 -


UM2488 - Rev 5 page 29/56

9 Electrical schematics

This section provides the design schematics for the STM32H745I-DISCO and STM32H750B-DK Discoveryboards:• Overall schematic for the STM32H745I-DISCO and STM32H750B-DK, see Figure 13• STM32H45I microcontroller I/Os, see Figure 14• STM32H50XB microcontroller I/Os, see Figure 15• STM32H45I microcontroller power, see Figure 16• STM32H50XB microcontroller power, see Figure 17• Ethernet, see Figure 18• Power over Ethernet (PoE), see Figure 19• USB OTG_FS, see Figure 20• FDCAN, see Figure 21• SDRAM, see Figure 22• eMMC, see Figure 23• QSPI, see Figure 24• 4.3” LCD, see Figure 25• Audio, see Figure 26. Audio• STMod+ , see Figure 27• TAG, see Figure 28• ARDUINO® connectors, see Figure 29• STLINK-V3E-SWD module, see Figure 30• STLINK-V3E-SWD power module, see Figure 31

UM2488Electrical schematics

UM2488 - Rev 5 page 30/56





Figure 13. STM32H745I-DISCO and STM32H750B-DK schematic (top view)

2 19

TOPTitle:

Size:Reference:Sheet: ofA3

Revision:

Project: STM32H745I-Disco

MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

PowerSTM32 microcontroller Power.SchDoc

TDI

RESET#TRST

TMS/SWDIOTCK/SWCLK

TDO/SWO

TAGTAG.SchDoc

Audio

Audio_I2CPDM

AudioAudio.SchDoc

LCDLCD_I2C

LCDLCD4.3.SchDoc

OTG_FS2_OverCurrent

USB_FS2_DMUSB_FS2_DP

USB_FS2_ID

OTG_FS2_PSO

USB_OTG_FSUSB OTG FS.SchDoc

NRST

ARD_A0ARD_A1ARD_A2ARD_A3ARD_A4ARD_A5

ARD_D5ARD_D4ARD_D3ARD_D2ARD_D1ARD_D0


ARD_D6ARD_D7

ARD_I2C

ArduinoArduino Connector.SchDoc

STMOD#12-RST

STMOD#1-NSS

STMOD#11-INT

STMOD#3-MISOp

STMOD#2-TX

STMOD#2-MOSIp

STMOD#3-RX

STMOD#4-SCK

STMOD#8-MOSIs

STMOD#13-ADCSTMOD#14-PWM

STMOD#19STMOD#20

STMOD#1-CTS

STMOD#17STMOD#18

STMOD#4-RTS

STMOD_I2C

STMOD#9-MISOs

STMod+STMod+.SchDoc

LCD

eMMC

AudioPDM

MII_TXD0

MII_TX_ENMII_TX_CLK

MII_RXD0

MII_RX_ERMII_RX_DVMII_RX_CLK

MII_COLMII_CRS

MII_TXD1MII_TXD2MII_TXD3

MII_RXD1MII_RXD2MII_RXD3MII_TX_ER/nINT

MII_MDCMII_MDIO

SWDIOSWCLKSWO

VCP_RXVCP_TX

I2C4



ARD_D6ARD_D7


RESET

OTG_FS2_PSOOTG_FS2_OverCurrent

USB_FS2_DMUSB_FS2_DP

USB_FS2_ID

FDCAN1_TXFDCAN1_RXFDCAN2_TXFDCAN2_RX

STMOD#1_SPI_CS

STMOD#11-INTSTMOD#12-RST

STMOD#2-TXSTMOD#3-RX

STMOD#8-MOSIsSTMOD#9-MISOs


STMOD#17STMOD#18

STMOD#1-CTS

STMOD#4-RTS

STMOD#19STMOD#20

SDRAM

OSC_25M

T_JTDI

QSPI

U_MCUSTM32 microcontroller IOs.SchDoc

SDRAM

SDRAMSDRAM.SchDoc

QSPI

QSPIQSPI.SchDoc

eMMCeMMC_RSTn

eMMCeMMC.SchDoc

MII_TXD0

MII_TX_ENMII_TX_CLK

MII_RXD0

MII_RX_ERMII_RX_DV

MII_RX_CLK

MII_COLMII_CRS

RESET#


MII_RXD1MII_RXD2MII_RXD3

MII_TX_ER/nINT

MII_MDCMII_MDIO

OSC_25M

U_EthernetEthernet.SchDoc

FDCAN1_TXFDCAN1_RXFDCAN2_TXFDCAN2_RX

FDCANsFDCAN.SchDoc

RST

RST

T_SW_DIR

T_SWCLKT_SWO

T_NRST

MCO

T_SWDIOT_PWR_EXTT_PWR_EN

T_VCP_TXT_VCP_RX

T_JTDI

STlink_V3E_ModuleSTlink_V3E_Module.SchDoc

T_PWR_EXTT_PWR_EN

STlink_V3E_PWRSTlink_V3E_PWR.SchDoc

HW_Mechanical_PartsHW_Mechanical_Parts.SchDoc

UM

2488Electrical schem

atics

UM

2488 - Rev 5

page 31/56

Figure 14. STM32H745XI microcontroller I/Os

3 19

STM32 microcontroller IOsTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

SDRAM

SDRAM_D[0..15]SDRAM_A[0..11]

SDRAM

SDRAM_A[0..11]

SDRAM__SDNCAS

SDRAM_NBL0

SDRAM_SDNE1SDRAM_SDCKE1

SDRAM_D[0..15]

SDRAM_NBL1

SDRAM_BA0SDRAM_BA1

SDRAM_NWESDRAM_CLK

SDRAM__SDNRAS

SDRAM

SDRAM_NBL0SDRAM_NBL1

SDRAM_BA0SDRAM_BA1

SDRAM_SDCKE1SDRAM_SDNE1

SDRAM_SDNRASSDRAM_SDNCAS

SDRAM_SDNWESDRAM_SDCLK

SDRAM_SDNWE

SDRAM_SDNRAS

SDRAM_BA0SDRAM_BA1

SDRAM_SDCLK

SDRAM_SDNCAS


SDRAM_SDNE1

SDRAM_A0SDRAM_A1SDRAM_A2SDRAM_A3SDRAM_A4SDRAM_A5

SDRAM_A6SDRAM_A7SDRAM_A8SDRAM_A9

SDRAM_A10SDRAM_A11LCD_R[0..7]

LCD_G[0..7]LCD_B[0..7]

LCD_HSYNCLCD_VSYNC

LCD_DELCD_DISPLCD_CLKLCD_INT

LCD_BLLCD_RST

LCDLCD_R[0..7]

LCD

LCD_G[0..7]LCD_B[0..7]LCD_HSYNCLCD_VSYNC

LCD_CLK

LCD_DELCD_DISP

LCD_INT

IIC4_SDAIIC4_SCL

LCD_BL

LCD

LCD_B0

LCD_G0

LCD_R0

LCD_R1LCD_R2

LCD_R3

LCD_R4LCD_R5LCD_R6LCD_R7

LCD_G1LCD_G2LCD_G3LCD_G4

LCD_G5LCD_G6

LCD_G7

LCD_B1LCD_B2LCD_B3

LCD_B4LCD_B5LCD_B6LCD_B7

LCD_HSYNC

LCD_VSYNC

LCD_CLK

LCD_DE

LCD_DISP

LCD_RST

LCD_INT

LCD_BL

QSPIQSPI_IO1QSPI_IO0

QSPI_CLK

QSPI_CS1

QSPI_IO2QSPI_IO3

QSPI_IO5QSPI_IO4

QSPI_IO6QSPI_IO7

QSPI_CS2

QSPI

QSPI_BK1_IO0QSPI_BK1_IO1QSPI_BK1_IO2QSPI_BK1_IO3

QSPI_BK1_NCS

QSPI_CLK


QSPI

QSPI_BK1_IO0

QSPI_BK1_IO1

QSPI_BK1_IO2QSPI_BK1_IO3

QSPI_BK1_NCS

QSPI_CLK


QSPI_BK2_IO2

QSPI_BK2_IO3

SDIO1_D[0..7]

eMMC

SDIO1_D[0..7]

SDIO1_CMDSDIO1_CK

eMMC

SDIO1_CKSDIO1_CMD

eMMC

SDIO1_D0SDIO1_D1SDIO1_D2

SDIO1_D3

SDIO1_D4SDIO1_D5

SDIO1_D6SDIO1_D7

SDIO1_CK

SDIO1_CMD

AudioSAI_SDB

SAI_FSA

Audio_Int

SAI_SDA

SAI_SCKA

SAI_MCKA

SAIAudio

SAI2_MCLKA

SAI2_SCKASAI2_FSASAI2_SDASAI2_SDBAudio_Int

PDM SAI4_CK2SAI4_D2

SAI2_MCLKASAI2_SCKA

SAI2_FSASAI2_SDA

SAI2_SDB

Audio_Int

SAI4_CK2SAI4_D2

MII_TXD0MII_TX_EN

MII_TX_CLK

MII_RXD0

MII_RX_ERMII_RX_DV

MII_RX_CLK

MII_COLMII_CRS



MII_TX_ER/nINT

MII_MDCMII_MDIO

Ethernet

MII_TX_CLKMII_TX_ENMII_TXD0MII_TXD1MII_TXD2MII_TXD3

MII_RXD0MII_RXD1MII_RXD2MII_RXD3MII_RX_ERMII_RX_DVMII_RX_CLK

MII_COLMII_CRS

MII_MDCMII_MDIO

MII_TX_ER/nINT

MII_TX_CLK

MII_TX_EN

MII_TXD0MII_TXD1

MII_TXD2

MII_TXD3

MII_RXD0MII_RXD1

MII_RXD2MII_RXD3

MII_RX_ER

MII_RX_DV

MII_RX_CLK

MII_COLMII_CRS

MII_MDC

MII_MDIO

MII_TX_ER/nINT

SWDIO

SWCLK

SWO

VCP_RXVCP_TX

DEBUGSWDIO

SWCLK

SWO

VCP_RXVCP_TX

SWDIOSWCLK

SWO

VCP_RXVCP_TX

I2C4



ARD_D6ARD_D7


Ethernet

IIC4_SDAIIC4_SCL


ARD_D0ARD_D1ARD_D2ARD_D3ARD_D4ARD_D5ARD_D6ARD_D7ARD_D8ARD_D9ARD_D10ARD_D11ARD_D12ARD_D13

ARD_A0

ARD_A1

ARD_A2ARD_A3

ARD_A4ARD_A5

ARD_D0ARD_D1

ARD_D2

ARD_D3

ARD_D4

ARD_D5

ARD_D6

ARD_D7

ARD_D8

ARD_D9ARD_D11

ARD_D12ARD_D13

RESET

BOOT0

3V3

3V3

3V3

Capacitor close to MCU

RESET RESET


USB_FS2_DMUSB_FS2_DPUSB_FS2_ID

OTG_FS


USB_OTG_FS2_N

USB_FS2_ID

OTG_FS2_PSO

OTG_FS2_OverCurrent

USB_FS2_ID

STMOD#11-INT

STMOD#12-RST

STMOD#2-TX

STMOD#3-RX

STMOD#8-MOSIs

STMOD#9-MISOs

STMOD#13-ADC

STMOD#14-PWM

STMOD#17

STMOD#18

STMOD#19

STMOD#20

STMOD#1-CTS

STMOD#4-RTS

STMod+

STMOD#1-CTS

STMOD#2-TX

STMOD#3-RX

STMOD#4-RTS

STMOD#8-MOSIs

STMOD#9-MISOs

STMOD#11-INT

STMOD#12-RST

STMOD#13-ADC

STMOD#14-PWM

STMOD#17

STMOD#18

STMOD#19

STMOD#20

STMOD#1-CTS


STMOD#4-RTSSTMOD#8-MOSIs

STMOD#9-MISOs

STMOD#11-INT

STMOD#12-RST


STMOD#17

STMOD#18

STMOD#19

STMOD#20

LED2

LED1

LEDs

LED2

LED1

FDCAN1_RXFDCAN1_TX

FDCAN

FDCAN1_TXFDCAN1_RX

FDCAN2_TXFDCAN2_RX FDCAN2_RX

FDCAN2_TX

FDCAN1_RXFDCAN1_TX

FDCAN2_RX

FDCAN2_TX

ButtonsPC13

3V3

Wakeup & Key Button

WAKEUP

WAKEUP

STMOD#1_SPI_CSSTMOD#1_SPI_CSSTMOD#1_SPI_CSSDRAM_D0SDRAM_D1

SDRAM_D2SDRAM_D3

SDRAM_D4SDRAM_D5SDRAM_D6SDRAM_D7SDRAM_D8SDRAM_D9SDRAM_D10SDRAM_D11SDRAM_D12

SDRAM_D13SDRAM_D14SDRAM_D15

3V3

3V3

SB4SB3

GREENLD7

REDLD6

510RR233

680RR232

1K5R67

1K5R64

0RR93

0RR98

NX3215SA-32.768KX2

1.5pFC62

1.5pFC70

10KR76

10KR143 R144

N/ADNF

10KR102

R103N/ADNF

TD0341X-G01-BLA

1 342

B2

BLUE HATHW13

TD0341X-G01-BLU

134

2

B1

BLACK HATHW12

100nFC50

100nFC181

51RR79

12ESDA7P60-1U1MU32

12

ESDA7P60-1U1MU31

C182N/A

DNF

100RR231

330RR230

220KR229

USB_OTG_FS2_P

USB_OTG_FS2_NUSB_OTG_FS2_P

VBUS_FS2

SDRAM_SDCKE1

SDASCL

I2C

DATACLK

PDM

ARD_D10

LCD_RST

OSC_25M OSC_25M

OSC_25MVDD4 OUT 3

EN1 GND 2

25MHzX1

51RR83

33RR8633RR84

33RR5533RR6133RR5933RR51

33RR7333RR70

33RR10633RR107

33RR4633RR4533RR2133RR1933RR7433RR2333RR4333RR4433RR63

33RR10833RR11033RR11133RR10933RR11433RR112

33RR26

33RR2433RR75

33RR3733RR1733RR2033RR1633RR4733RR18

33RR5033RR48

33RR7833RR7733RR81

33RR8033RR105

33RR2533RR113

33RR4033RR38

33RR2233RR4233RR49

33RR41

33RR39

33RR100

33RR10133RR10433RR115

SB24

T_JTDI T_JTDI

T_JTDI

PE5 D1

PC1M2

PC2M3

PC3M4

PF9 L4

PA2N3 PA1N4

PA6R3

PA0N5

PA7R5

PB11P12

PD11 R15

PC6F14

PA8E15

PA9D15

PA13(JTMS/SWDIO)C15

PA15(JTDI)A14

PC10A13

PA14(JTCK/SWCLK)B14

PC11B13

PD4 A12

PB6B5

PE1 B4

PF2 G1

PE6 E5

PF13 P7

PB2R6

PF12 R7

PC7F13

PB3(JTDO/TRACESWO)C6

PB7C5

PE0 C4

PA12E16 PA11E17

PD14 P16

PD12 R16

PD13 R17

PA5T3

PC4T4

PB1T5

PF11 T7

PE8 T9

PE13 T10PB12T14

PB15T15

PD10 T16PD9 T17

PA3U2

PA4U3

PC5U4

PB0U5

PE7 U9

PE14 U10PB13U14

PB14U15

PD8 U16

PE4 D2

PF7 K3PF6 K2

PF10 L3

PC0L2

PF8 K4

PF5 J4

PF3 H4

PF14 P8

PE10 N9PE9 P9

PF15 R9

PE11 P10

PE12 R10

PB10P11

PE15 R11

PD15 P15

PD1 E12

PC8E13

PD0 D13

PB4(NJTRST)B7

PB5A5

PD3 B12

PC12C12

PD2 D12

PD7 C11PD6 B11PD5 A11

PC14-OSC32_INC2

PB8D5

PC9E14

PA10D14

PE2 C3

PE3 D3

PB9D4

PC13E3

PF1 G3PF0 G4

PC15-OSC32_OUTC1

PF4 J5

STM32H745XIH6U6A

NRSTK1

PG3H15

PG6G15 PG5G14

PG8F15

PG9A10

PG10A9

PG11B9

PG12C9

PG14D8

PG7F16

PG2H16

PG0T8

PG1U8

PG4H14

PG13D9

PG15D6

PH2N2

PH3P2

PH5P4 PH4P3

PH9R13

PH12R14

PH1-OSCOUTJ1

PH15B16 PH14B17 PH13D16

PH6T11

PH8T13 PH7U13

PH0-OSCINJ2

PH10P13

PH11P14

PI15 P5

PJ11 K14

PI2 B15PI1 A15

PK5 A8

PI12 H1

PJ9 M14

PJ15 B10PJ14 D10

PK7 D7

PI0 A16

PK2 H17

PJ2 T6

PJ3 U6

PJ4 U7

PI5 A3

PI6 A2

PI9 E2

PI13 H2

PJ0 N6

PJ1 P6

PJ5 R12

PJ8 N13PJ7 N14PJ6 N15

PK1 J15PK0 J14

PK3 C8

PK4 B8

PK6 C7

PI7 B3

PI4 A4

PJ10 L14

PJ12 D11

PI8 E4

PI10 F3

PI3 C14

PI14 H3

PJ13 E10

PI11 F4

PC3_CR2

PA0_CT1

PA1_CT2

PC2_CR1

DSI_CK_P L16

DSI_CK_N L17

DSI_D0_P M16

DSI_D0_N M17

DSI_D1_P K16

DSI_D1_N K17PDR_ONE7

BOOT0E8

STM32H745XIH6U6B

QSPI_BK2_NCS

SB47

QS P I_B

K2 _N

CS

UM


atics

UM

2488 - Rev 5

page 32/56

Figure 15. STM32H750XB microcontroller I/Os

3 19

STM32 microcontroller IOsTitle:


Revision:


MB1381B 0111-JUNE-18

H750XB

Date:-

Variant:

SDRAM


SDRAM

SDRAM_A[0..11]

SDRAM__SDNCAS

SDRAM_NBL0


SDRAM_D[0..15]

SDRAM_NBL1

SDRAM_BA0SDRAM_BA1

SDRAM_NWESDRAM_CLK

SDRAM__SDNRAS

SDRAM


SDRAM_BA0SDRAM_BA1

SDRAM_SDCKE1SDRAM_SDNE1



SDRAM_SDNWE

SDRAM_SDNRAS

SDRAM_BA0SDRAM_BA1

SDRAM_SDCLK

SDRAM_SDNCAS


SDRAM_SDNE1

SDRAM_A0SDRAM_A1SDRAM_A2SDRAM_A3SDRAM_A4SDRAM_A5

SDRAM_A6SDRAM_A7SDRAM_A8SDRAM_A9

SDRAM_A10SDRAM_A11LCD_R[0..7]

LCD_G[0..7]LCD_B[0..7]

LCD_HSYNCLCD_VSYNC

LCD_DELCD_DISPLCD_CLKLCD_INT

LCD_BLLCD_RST

LCDLCD_R[0..7]

LCD


LCD_CLK

LCD_DELCD_DISP

LCD_INT

IIC4_SDAIIC4_SCL

LCD_BL

LCD

LCD_B0

LCD_G0

LCD_R0

LCD_R1LCD_R2

LCD_R3

LCD_R4LCD_R5LCD_R6LCD_R7

LCD_G1LCD_G2LCD_G3LCD_G4

LCD_G5LCD_G6

LCD_G7

LCD_B1LCD_B2LCD_B3

LCD_B4LCD_B5LCD_B6LCD_B7

LCD_HSYNC

LCD_VSYNC

LCD_CLK

LCD_DE

LCD_DISP

LCD_RST

LCD_INT

LCD_BL

QSPIQSPI_IO1QSPI_IO0

QSPI_CLK

QSPI_CS1

QSPI_IO2QSPI_IO3

QSPI_IO5QSPI_IO4

QSPI_IO6QSPI_IO7

QSPI_CS2

QSPI


QSPI_BK1_NCS

QSPI_CLK


QSPI

QSPI_BK1_IO0

QSPI_BK1_IO1


QSPI_BK1_NCS

QSPI_CLK


QSPI_BK2_IO2

QSPI_BK2_IO3

SDIO1_D[0..7]

eMMC

SDIO1_D[0..7]

SDIO1_CMDSDIO1_CK

eMMC

SDIO1_CKSDIO1_CMD

eMMC

SDIO1_D0SDIO1_D1SDIO1_D2

SDIO1_D3

SDIO1_D4SDIO1_D5

SDIO1_D6SDIO1_D7

SDIO1_CK

SDIO1_CMD

AudioSAI_SDB

SAI_FSA

Audio_Int

SAI_SDA

SAI_SCKA

SAI_MCKA

SAIAudio

SAI2_MCLKA


PDM SAI4_CK2SAI4_D2

SAI2_MCLKASAI2_SCKA

SAI2_FSASAI2_SDA

SAI2_SDB

Audio_Int

SAI4_CK2SAI4_D2

MII_TXD0MII_TX_EN

MII_TX_CLK

MII_RXD0

MII_RX_ERMII_RX_DV

MII_RX_CLK

MII_COLMII_CRS



MII_TX_ER/nINT

MII_MDCMII_MDIO

Ethernet

MII_TX_CLKMII_TX_ENMII_TXD0MII_TXD1MII_TXD2MII_TXD3

MII_RXD0MII_RXD1MII_RXD2MII_RXD3MII_RX_ERMII_RX_DVMII_RX_CLK

MII_COLMII_CRS

MII_MDCMII_MDIO

MII_TX_ER/nINT

MII_TX_CLK

MII_TX_EN

MII_TXD0MII_TXD1

MII_TXD2

MII_TXD3

MII_RXD0MII_RXD1

MII_RXD2MII_RXD3

MII_RX_ER

MII_RX_DV

MII_RX_CLK

MII_COLMII_CRS

MII_MDC

MII_MDIO

MII_TX_ER/nINT

SWDIO

SWCLK

SWO

VCP_RXVCP_TX

DEBUGSWDIO

SWCLK

SWO

VCP_RXVCP_TX

SWDIOSWCLK

SWO

VCP_RXVCP_TX

I2C4



ARD_D6ARD_D7


Ethernet

IIC4_SDAIIC4_SCL


ARD_D0ARD_D1ARD_D2ARD_D3ARD_D4ARD_D5ARD_D6ARD_D7ARD_D8ARD_D9ARD_D10ARD_D11ARD_D12ARD_D13

ARD_A0

ARD_A1

ARD_A2ARD_A3

ARD_A4ARD_A5

ARD_D0ARD_D1

ARD_D2

ARD_D3

ARD_D4

ARD_D5

ARD_D6

ARD_D7

ARD_D8

ARD_D9ARD_D11

ARD_D12ARD_D13

RESET

BOOT0

3V3

3V3

3V3

Capacitor close to MCU

RESET RESET



OTG_FS


USB_OTG_FS2_N

USB_FS2_ID

OTG_FS2_PSO

OTG_FS2_OverCurrent

USB_FS2_ID

STMOD#11-INT

STMOD#12-RST

STMOD#2-TX

STMOD#3-RX

STMOD#8-MOSIs

STMOD#9-MISOs

STMOD#13-ADC

STMOD#14-PWM

STMOD#17

STMOD#18

STMOD#19

STMOD#20

STMOD#1-CTS

STMOD#4-RTS

STMod+

STMOD#1-CTS

STMOD#2-TX

STMOD#3-RX

STMOD#4-RTS

STMOD#8-MOSIs

STMOD#9-MISOs

STMOD#11-INT

STMOD#12-RST

STMOD#13-ADC

STMOD#14-PWM

STMOD#17

STMOD#18

STMOD#19

STMOD#20

STMOD#1-CTS


STMOD#4-RTSSTMOD#8-MOSIs

STMOD#9-MISOs

STMOD#11-INT

STMOD#12-RST


STMOD#17

STMOD#18

STMOD#19

STMOD#20

LED2

LED1

LEDs

LED2

LED1

FDCAN1_RXFDCAN1_TX

FDCAN

FDCAN1_TXFDCAN1_RX

FDCAN2_TXFDCAN2_RX FDCAN2_RX

FDCAN2_TX

FDCAN1_RXFDCAN1_TX

FDCAN2_RX

FDCAN2_TX

ButtonsPC13

3V3

Wakeup & Key Button

WAKEUP

WAKEUP

STMOD#1_SPI_CSSTMOD#1_SPI_CSSTMOD#1_SPI_CSSDRAM_D0SDRAM_D1

SDRAM_D2SDRAM_D3

SDRAM_D4SDRAM_D5SDRAM_D6SDRAM_D7SDRAM_D8SDRAM_D9SDRAM_D10SDRAM_D11SDRAM_D12

SDRAM_D13SDRAM_D14SDRAM_D15

3V3

3V3

SB4SB3

GREENLD7

REDLD6

510RR233

680RR232

1K5R67

1K5R64

0RR93

0RR98

NX3215SA-32.768KX2

1.5pFC62

1.5pFC70

10KR76

10KR143 R144

N/ADNF

10KR102

R103N/ADNF

TD0341X-G01-BLA

1 342

B2

BLUE HATHW13

TD0341X-G01-BLU

134

2

B1

BLACK HATHW12

100nFC50

100nFC181

51RR79

12ESDA7P60-1U1MU32

12

ESDA7P60-1U1MU31

C182N/A

DNF

100RR231

330RR230

220KR229

USB_OTG_FS2_P

USB_OTG_FS2_NUSB_OTG_FS2_P

VBUS_FS2

SDRAM_SDCKE1

SDASCL

I2C

DAT ACLK

PDM

ARD_D10

LCD_RST

OSC_25M OSC_25M

OSC_25MVDD4 OUT 3

EN1 GND 2

25MHzX1

51RR83

33RR8633RR84

33RR5533RR6133RR5933RR51

33RR7333RR70

33RR10633RR107

33RR4633RR4533RR2133RR1933RR7433RR2333RR4333RR4433RR63

33RR10833RR11033RR11133RR10933RR11433RR112

33RR26

33RR2433RR75

33RR3733RR1733RR2033RR1633RR4733RR18

33RR5033RR48

33RR7833RR7733RR81

33RR8033RR105

33RR2533RR113

33RR4033RR38

33RR2233RR4233RR49

33RR41

33RR39

33RR100

33RR10133RR10433RR115

SB24

T_JTDI T_JTDI

T_JTDI

PE5 D1

PC1M2PC2M3PC3M4

PF9 L4

PA2N3 PA1N4

PA6R3

PA0N5

PA7R5

PB11P12

PD11 R15

PC6F14

PA8E15PA9D15

PA13(JTMS/SWDIO)C15

PA15(JTDI)A14

PC10A13

PA14(JTCK/SWCLK)B14

PC11B13

PD4 A12

PB6B5

PE1 B4

PF2 G1

PE6 E5

PF13 P7

PB2R6

PF12 R7

PC7F13

PB3(JTDO/TRACESWO)C6

PB7C5

PE0 C4

PA12E16 PA11E17

PD14 P16PD12 R16PD13 R17

PA5T3

PC4T4

PB1T5

PF11 T7

PE8 T9

PE13 T10PB12T14

PB15T15

PD10 T16PD9 T17

PA3U2PA4U3

PC5U4

PB0U5

PE7 U9

PE14 U10PB13U14PB14U15

PD8 U16

PE4 D2

PF7 K3PF6 K2

PF10 L3

PC0L2

PF8 K4

PF5 J4PF3 H4

PF14 P8

PE10 N9PE9 P9

PF15 R9

PE11 P10PE12 R10

PB10P11

PE15 R11

PD15 P15

PD1 E12

PC8E13

PD0 D13

PB4(NJTRST)B7PB5A5

PD3 B12

PC12C12

PD2 D12

PD7 C11PD6 B11PD5 A11

PC14-OSC32_INC2

PB8D5

PC9E14

PA10D14

PE2 C3PE3 D3

PB9D4

PC13E3

PF1 G3PF0 G4

PC15-OSC32_OUTC1

PF4 J5

STM32H750XBH6U6A

NRSTK1

PG3H15

PG6G15 PG5G14

PG8F15PG9A10PG10A9PG11B9PG12C9

PG14D8

PG7F16

PG2H16PG0T8PG1U8

PG4H14

PG13D9

PG15D6

PH2N2PH3P2

PH5P4 PH4P3

PH9R13

PH12R14

PH1-OSCOUTJ1

PH15B16 PH14B17 PH13D16

PH6T11

PH8T13 PH7U13

PH0-OSCINJ2

PH10P13PH11P14

PI15 P5

PJ11 K14

PI2 B15PI1 A15

PK5 A8

PI12 H1

PJ9 M14

PJ15 B10PJ14 D10

PK7 D7

PI0 A16

PK2 H17

PJ2 T6PJ3 U6PJ4 U7

PI5 A3PI6 A2

PI9 E2

PI13 H2

PJ0 N6PJ1 P6

PJ5 R12

PJ8 N13PJ7 N14PJ6 N15

PK1 J15PK0 J14

PK3 C8PK4 B8

PK6 C7

PI7 B3

PI4 A4

PJ10 L14

PJ12 D11

PI8 E4

PI10 F3

PI3 C14

PI14 H3

PJ13 E10

PI11 F4

PC3_CR2

PA0_CT1PA1_CT2

PC2_CR1

DSI_CK_P L16DSI_CK_N L17

DSI_D0_P M16DSI_D0_N M17DSI_D1_P K16DSI_D1_N K17PDR_ONE7

BOOT0E8

STM32H750XBH6U6B

QSPI_BK2_NCS

SB47

QSPI_BK

2_NCS

UM


atics

UM

2488 - Rev 5

page 33/56

Figure 16. STM32H745XI microcontroller power

4 19

STM32 microcontroller PowerTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

5V

3V3

3V3 VDD_MCU

VDD_MCU

VDDA

VREF+

VDD_MCU

3V3

VREF+ VDDA

VDD_MCU

VDD_MCU

VDD_MCU 3V3

1V8

VDD_MCU

VIN E5V

GND-SD

VDD_MCU

2.2uFC182.2uFC752.2uFC79 DNF

100nFC99

100nFC57

100nFC95

100nFC85

100nFC88

100nFC87

100nFC45

100nFC100

100nFC96

100nFC55

100nFC40

100nFC46

100nFC31

100nFC27

100nFC29

100nFC54

100nFC33

100nFC42

100nFC43

100nFC39

100nFC36

100nFC44

100nFC168

0RR66

LD1117S50TR

Vin3 Vout 2

Gnd

1

Tab 4

U17

10uFC154

10uFC156

Shunt Fitted

JP1

TP5

TP1

TP2SB1

SB5SB18

SB15

SB23

SB27

SB26

SB17SB6

1uFC53 10uF

C155

1uFC41

10uFC35

4.7uFC77

4.7uFC172

10uFC161

4.7uF(N/A)C78 DNF4.7uFC63

FCM1608KF-601T03L2

TP3

HW14

GND-SD

2.2uHL4 NC 1

GND6

VO 2

NC 5GNDEP

VI3

NC 4

ST1L05APU33RU20

Vin3 Vout 2

GND1 Tab 4

LD1117S18TRU18

5V

VREF+

VREF+

C24N/A

DNF

R29 N/ADNF

C25N/A

DNF

4.7uFC16

VIN1

EN2

SS3

FILT4 OUT_S 5OUT_F 6GND_F 7GND_S 8REF6225IDGKTU3

DNF

VREF- N1

VREF+M1

VSSA P1

VDDE11

VSS L10

VDDK13

VSSSMPSF2

VSS R8

VSS G16VDDG5

VDDH5

VDDE9

VDDF5

VSS T12

VDDM13

VSSDSI K15

VSSDSI M15

VSS K11

VSS J17

VDDG13

VDDN12

VSS C10

VCAPA7

VDDIOSMPSF1

VDDN7

VDDJ13 VDDH13

VSS B6

VDDIO33_LDOC17

VCAPD17

VDDUSB33F17

VSSDSI L15

VDD50USBG17

VSS L7

VSS L8

VSS J3

VSS J16

VSS N16

VSS U17

VSS L11

VSS K10

VCAPDSI N17VDDDSI P17

VCAPU11

VDDIO33_LDOU12

VSS A1

VBATB1

VSS B2

VDDAL1

VSS L9

VDDN10 VDDN11

VDDK5

VDDIO33_LDOA6

VDDL5

VDDL13

VSS C13

VSS C16

VFBSMPSG2 VLXSMPSE1

VDDM5

VDDE6

VSS A17

VDDN8

VSS U1

VSS R4

VSS G7

VSS G8

VSS G9

VSS G10

VSS G11

VSS H7

VSS H8

VSS H9

VSS H10

VSS H11

VSS J7

VSS J8

VSS J9

VSS J10

VSS J11

VSS K7

VSS K8

VSS K9

STM32H745XIH6U6C

220pFC184

SB43 VDD_MCU

10uFC52

10uFC185

VDD_SDC

SB44SB45VDD_SDC

NOTE : (H745XI default setting is SMPS mode, andH750XB only supports LDO mode)LDO mode:SB6, SB17, SB45 mounted, SB5, SB18, SB26,SB27,SB44,

SB46,L4 removedSMPS mode (default):SB5, SB18, SB44, SB46, L4 mouned, SB6, SB17, SB27,SB26,SB45 removedSMPS +LDO modeSB6, SB17, SB44, SB46,L4 mouned,SB26,SB5,SB18,SB27,SB45 removed

NOTE : place C185,SB46 near L4

SB46

Ceramic capacitor (Low ESR <600m ohm)

C186N/A

DNF

TP6

C187N/A

DNF

FBMJ1608HM180NTRL3

UM


atics

UM

2488 - Rev 5

page 34/56

Figure 17. STM32H750XB microcontroller power

4 19

STM32 microcontroller PowerTitle:


Revision:


MB1381B 0111-JUNE-18

H750XB

Date:-

Variant:

5V

3V3

3V3 VDD_MCUVDD_MCU

VDDA

VREF+

VDD_MCU

3V3

VREF+ VDDA

VDD_MCU

VDD_MCU

VDD_MCU 3V3

1V8

VDD_MCU

VIN E5V

GND-SD

VDD_MCU

2.2uFC182.2uFC752.2uFC79DNF

100nFC99

100nFC57

100nFC95

100nFC85

100nFC88

100nFC87

100nFC45

100nFC100

100nFC96

100nFC55

100nFC40

100nFC46

100nFC31

100nFC27

100nFC29

100nFC54

100nFC33

100nFC42

100nFC43

100nFC39

100nFC36

100nFC44

100nFC168

0RR66

LD111 7S50TRVin3 Vout 2

Gnd

1

Tab 4

U17

10uFC154

10uFC156

Shunt Fitted

JP1

TP5

TP1

TP2SB1

SB15

SB23

SB27

SB26

1uFC53 10uF

C155

1uFC41

10uFC35

4.7uFC77

4.7uFC172

10uFC161

4.7uF(N/A)C78DNF4.7uFC63

FCM1608KF-601T03L2

TP3

HW14

GND-SD

2.2uHL4 DNF NC 1GND6

VO 2

NC 5GNDEP

VI3

NC 4

ST1L05APU33RU20

Vin3 Vou t 2GND1 Tab 4

LD111 7S18TRU18

5VVREF+

VREF+

C24N/A

DNF

R29 N/ADNF

C25N/A

DNF

4.7uFC16

VIN1EN2SS3FILT4 OUT_S 5OUT_F 6GND_F 7GND_S 8

REF6225IDGKTU3

DNF

VREF- N1

VREF+M1

VSSA P1

VDDE11

VSS L10

VDDK13

VSSSMPSF2

VSS R8

VSS G16VDDG5

VDDH5

VDDE9

VDDF5

VSS T12

VDDM13

VSSDSI K15

VSSDSI M15

VSS K11

VSS J17

VDDG13

VDDN12

VSS C10

VCAPA7

VDDIOSMPSF1

VDDN7

VDDJ13 VDDH13

VSS B6

VDDIO33_LDOC17

VCAPD17

VDDUSB33F17

VSSDSI L15

VDD50USBG17

VSS L7VSS L8

VSS J3

VSS J16

VSS N16VSS U17

VSS L11VSS K10

VCAPDSI N17VDDDSI P17

VCAPU11

VDDIO33_LDOU12

VSS A1

VBATB1

VSS B2

VDDAL1

VSS L9

VDDN10 VDDN11

VDDK5

VDDIO33_LDOA6

VDDL5

VDDL13

VSS C13VSS C16

VFBSMPSG2 VLXSMPSE1

VDDM5VDDE6

VSS A17

VDDN8

VSS U1

VSS R4VSS G7VSS G8VSS G9VSS G10VSS G11VSS H7VSS H8VSS H9VSS H10VSS H11VSS J7VSS J8VSS J9VSS J10VSS J11VSS K7VSS K8VSS K9

STM32H750XBH6U6C

220pFC184

SB43 VDD_MCU

10uFC52

10uFC185VDD_SDC

SB45SB44VDD_SDC

NOTE : LDO mode: SB6, SB17, SB45 mounted, SB5, SB18, SB26,SB27,SB44,SB46,L4 removedSMPS mode (default):SB5, SB18, SB44, SB46, L4 mouned, SB6, SB17, SB27,SB26,SB45 removedSMPS +LDO modeSB6, SB17, SB44, SB46,L4 mouned,SB26,SB5,SB18,SB27,SB45 removed

NOTE : place C185,SB46 near L4

Ceramic capacitor (Low ESR <600m ohm)

C186N/A

DNF

TP6

C187N/A

DNF

FBMJ1608HM180NTRL3

SB6SB17

SB18SB5

SB46

UM


atics

UM

2488 - Rev 5

page 35/56

Figure 18. Ethernet

5 19

EthernetTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

MII_TXD0MII_TX_EN

MII_TX_CLK

MII_RXD0

MII_RX_ERMII_RX_DV

MII_RX_CLK

MII_COLMII_CRS

RESET#



MII_TX_ER/nINT

PC3PG11PG13PG12PC2PE2

PC4PC5PB0PB1

PI10PA7

PH2PH3

PA1

MII_MDCMII_MDIO PC1

PA2

LED_G_A

LED_G_K

LED_Y_A

LED_Y_K

RD_P

TD_N

TD_P

RD_N

PoEPoE.SchDoc

100nFC56

PB2

12K1R96

49.9RR91

49.9RR90

49.9RR88

49.9RR89

3V3

100nFC71

100nFC69

1uFC89

100nFC97

3V3

330RR7

10KR94

330RR95

0RR122OSC_25M

470pFC86

1K5R1343V34K7R127

Note:Remove R127 and keep R123 when nINT functionis enabled. TXER is disabledRemove R123 and keep R127 when nINT functionis disabled. TXER is enabled

100RR120

100RR137100RR141

VDD2A 1

LED2/nINT/nPME/nINTSEL 2LED1/nINT/nPME/REGOFF 3

XTAL24

XTAL1/CLKIN5

VDDCR 6

RXCLK/PHYAD17

RXD3/PHYAD28

RXD2/nPME/RMIISE;9

RXD1/MODE110

RXD0/MODE011

VDDIO 12

RXER/RXD4/PHYAD013

CRS14

COL/CRS_DV/MODE215

MDIO16

MDC17

nINT/TXER/TXD418

nRST19

TXCLK20

TXEN21

TXD022

TXD123

TXD224

TXD325

RXDV26

VDD1A 27

TXN 28

TXP 29

RXN 30

RXP 31

RBIAS32 EP 33

LAN8740Ai-EN-TRU9

100RR136100RR97100RR140100RR139100RR138100RR146100RR133

VDD_ETH

VDD_ETH

10pF

C68

10pF

C67

10pF

C65

10pF

C66

R123N/ADNF

3V3

LED2_ETH

SB25

SB28

LED2_ETH

SB22

SB14

Note:keep R94 to enable the TXER function, and closeSB22,SB28,open SB14,SB25 for LED2Remove R94 and SB14 to enable nINT founction, and

close SB14,SB25, open SB22,SB28 for LED2

R119N/ADNF

4K7

R16

9

3V3

PHY Address: 01h

R1 6

7N

/A

DNF

R16

8N

/A

DNF

R17

0N

/A

DNF

R166 N/ADNF

120ohmL5

iMIIi

MIIMatched Net Lengths [Tolerance = 100mil]

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

iMII

UM


atics

UM

2488 - Rev 5

page 36/56

Figure 19. Power over Ethernet (PoE)

6 19

PoETitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

Power Over Ethernet

Chassis

Chassis

Chassis

INPUT

5V_POE

5V_POE

LED_G_KLED_G_A

LED_Y_A

Chassis

TD_N

TD_P

RD_N

RD_P

LED_G_KLED_G_A

LED_Y_ALED_Y_K

LED_G_ALED_G_KLED_Y_ALED_Y_K

TD_NTD_P

RD_NRD_P RD_P

TD_NTD_P

RD_N

iDiff Pair 100ohm

Matched Net Lengths [Tolerance = 100mil]

iDiff Pair 100ohm


iDiff Pair 100ohm


iDiff Pair 100ohm


LED_Y_K

AGND

NOTE : The AGND is a dedicated plan.The resistor 0 ohm must be very close to pin 9

NOTE : Place for additional ferrite beads

POE1

POE2

POE3

POE4 POE5POE6

POE7POE8

POE1

POE5POE6

POE7POE8

POE2

POE3

POE4

RX+ 3

NC 5NC 4

NC 7RX- 6

NC 8

LED(Yellow)_A 10

LED(Yellow)_K 9

LED(Green)_K 11LED(Green)_A 12

TX+ 1

TX- 2

SH1 SH1

SH2 SH2

KRJ-CB4.2GYZNLCN1

0R_0805

R13

0R_0805

R12

0R_0805R82

75KR131

10KR10

0RR99

0R_0805R72

10KR87

1KR57 1KR68

0R_0805R34

0R_0805R1

13KR52

13KR33

20KR35

0RR4

10KR58

1

2

36

7

89

10

1114

15

16H2019NLT3

100nF, 100VC6

1nF, 100VC20

1nF, 100VC17

1nF, 100VC22

1nF, 100VC19

1nF, 100VC13

1nF, 100VC8

1nF, 100VC23

1nF, 100VC91

1nF, 100VC82

-

+

2

3

1

4

~ ~DF01SD4

-

+

2

3

1

4

~ ~DF01SD5

4

1

2

3 7

5

8

6

Pri

Bias

Sec

POE30P-50LT2

SMAJ58A-TRD1

75RR27

75RR11

75RR15

75RR28

2

4

3

1 5

7

6

8

Pri

Bias

Sec

T1N/A

DNF

5.6uHL1

4.7uF, 100VC1

4.7uF, 100VC2

4.7uF, 100VC21

BAT46JFILMD2

BAT46JFILMD6

STPS2L40UFD3

4 1

23

HMHA2801AU4

K3

A5

REF 4NC

1

NC

2

TS431AILTU5

RT1

SS2

AUXII3

VIN4 CS 13

COMP 14

VFB 15

AGND 16

RCLASS5

AUXI_IRL6

DCCL7

GND 9

GD 10

VCC 11

nPGD 12

E PA

DE P

VSS8

PM8800ATRU8

1

32 4

STN4NF20LT4

10RR32

10nF, 100VC93

10nF, 100VC92

100nF, 50VC90

100nF, 50VC59

100nF, 50VC60

100nF, 50VC30

124KR118 1uF, 25VC61

1uF, 25VC26

2KR129

470pF, 100VC58

56RR71

C14N/A

DNF

68RR5

15RR8

560pFC12

47uFC5 47uF

C3 47uFC4

47uFC11

100nFC7

510RR92

1nFC37

10nF, 50VC34

100pF, 50VC28

22nF, 50VC32

1nFC10

100nF, 100VC9

22nF, 50VC51

VDD_ETH

200R(N/A)R6 DNF

0R47R85STPS1H100A

D7

NOTE : this diode must be placed close thepin 8 and 9

UM


atics

UM

2488 - Rev 5

page 37/56

Figure 20. USB OTG_FS

7 19

USB OTG FSTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

5V

OTG_FS2_PSO

OTG_FS2_OverCurrent

3V3


PA9

PA10

PA11PA12

3V3

4.7uFC173

0RR212

0RR211

10KR213

IN5 OUT 1

GND

2

EN4 FAULT 3

STMPS2151U23

GREENLD1

REDLD5

47KR214

47KR221

22KR220

330RR219

3

1

2

9013-SOT23Q1

VBUS_FS2

PA5

PH11

620RR228

VBUS1

DM2

DP3

ID4

GND5

Shield6

US B

_Mi c

ro- A

Bre

cept

acle

Shield7

Shield8

Shield9

EXP10

47590-0001CN13

I/O11

GND2

I/O23 I/O3 4VBUS 5I/O4 6USBLC6-4SC6U25

UM


atics

UM

2488 - Rev 5

page 38/56

Figure 21. FDCAN

8 19

FDCANTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

FDCAN1_TX

FDCAN1_RX

PH13

5V

3V3

FDCAN2_TX

FDCAN2_RX

PB13

PB5

5V

3V3

100nFC171

100nFC170

100nFC174

100nFC176

TXD1

VSS2

VDD3

RXD4 VIO 5CANL 6CANH 7STBY 8MCP2562FDT-H/SNU22

TXD1

VSS2

VDD3

RXD4 VIO 5CANL 6CANH 7STBY 8MCP2562FDT-H/SNU21

10KR225

10KR223

JP6

JP7

120RR224

120RR222

PH14

31 2

ESDCAN02-2BWYU30

31 2

ESDCAN02-2BWYU29

12

CN11

12

CN10

UM


atics

UM

2488 - Rev 5

page 39/56

Figure 22. SDRAM

9 19

SDRAMTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

Place close SDRAM

SDRAM_SDNWE

SDRAM_SDNRAS

SDRAM_BA0SDRAM_BA1

SDRAM_SDCLK

SDRAM_SDNCAS

3V3SDRAM_D0


SDRAM_SDNE1


SDRAM

SDRAM_A[0..11]

SDRAM__SDNCAS

SDRAM_NBL0


SDRAM_D[0..15]

SDRAM_NBL1

SDRAM_BA0SDRAM_BA1

SDRAM_NWESDRAM_CLK

SDRAM__SDNRAS

SDRAM


SDRAM_A0SDRAM_A1SDRAM_A2SDRAM_A3SDRAM_A4SDRAM_A5SDRAM_A6SDRAM_A7SDRAM_A8SDRAM_A9SDRAM_A10SDRAM_A11

SDRAM_D1SDRAM_D2SDRAM_D3SDRAM_D4SDRAM_D5SDRAM_D6SDRAM_D7SDRAM_D8SDRAM_D9SDRAM_D10SDRAM_D11SDRAM_D12SDRAM_D13SDRAM_D14SDRAM_D15

SDRAM_BA0SDRAM_BA1

SDRAM_SDCKE1

SDRAM_SDNE1



100nFC76

100nFC94

100nFC73

100nFC102

100nFC72

100nFC84

100nFC49

100nFC64

100nFC101

100nFC74

100nFC83

100nFC47

100nFC81

100nFC48

10KR158

10KR124

10KR128

10KR159

10KR162

10KR163

10KR135

10KR161

10KR155

10KR132

10KR157

10KR156

10KR160

10KR164

10KR125

10KR121

10KR11610KR117

SDRAM_SDCKE1

PF0PF1PF2PF3PF4PF5

PH5

PF11

PF12PF13PF14PF15PG0PG1

PE7PE8PE9PE10PE11PE12PE13PE14PE15

PH6PH7

PD8PD9PD10

PD14PD15

PG4PG5

PG8

PD0PD1

PG15

PE0PE1

iSDRAM


iSDRAM

iSDRAMiSDRAMiSDRAMiSDRAMiSDRAM

iSDRAM

A11H9

A10G7

A9J3

A8H2

A7H1

A6G3

A5G2

A4G1

A3F3

A2F7

A1G9

A0G8

NCE3

DQ0 R8

DQ8 L2

DQ1 N7

DQ9 M3

DQ2 R9

DQ10 M2

DQ3 N8

DQ11 P1

VDDQB2

DQ4 P9

DQ12 N2

DQ5 M8

DQ13 R1

DQ6 M7

DQ14 N3

DQ7 L8

DQ15 R2

VSS A3VDDA7

DQ16 E8

DQ24 A2

DQ17 D7

DQ25 C3

DQ18 D8

DQ26 A1

DQ19 B9

DQ27 C2

DQ20 C8

DQ28 B1

DQ21 A9

DQ29 D2

DQ22 C7

DQ30 D3

DQ23 A8

DQ31 E2

VSSQ B3

VDDQB7 VSSQ B8

VSSQ C1VDDQC9

VSSQ D1VDDQD9

VDDQE1

NCE7

VSSQ E9

VSS F1VDDF9

NCH3

NCH7

BA0J7 BA1H8

NUK2 NCK3

VDDQL1

VSS L3VDDL7

VSSQ L9

VSSQ M1VDDQM9

VSSQ N1VDDQN9

VDDQP2 VSSQ P3

VDDQP7 VSSQ P8

VSS R3VDDR7

DQM0K9 DQM1K1 DQM2F8

CLKJ1 CKEJ2 CS#J8

DQM3F2

RAS#J9 CAS#K7 WE#K8

MT48LC4M32B2B5-6A IT_L TRU7

UM


atics

UM

2488 - Rev 5

page 40/56

Figure 23. eMMC

10 19

eMMCTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

3V3

SDIO1_D0

SDIO1_D[0..7]

eMMC

SDIO1_D[0..7]

SDIO1_CMDSDIO1_CK

eMMC

SDIO1_D1SDIO1_D2SDIO1_D3SDIO1_D4SDIO1_D5SDIO1_D6SDIO1_D7

SDIO1_CKSDIO1_CMD

eMMC_RSTn

SDIO1_CK

SDIO1_CMD

100nFC158

100nFC157

C133N/A

DNF

2.2uFC159

2.2uFC120

C131N/A

DNF

0RR206

TP4

eMMC_RSTn

PC6

PD2

PC7

PC8PC9PC10PC11

PC12

PB8PB9

3V3

3V3

3V3

47KR202

3V3

47K

R14

747

KR

148

47K

R15

247

KR

149

47K

R15

447

KR

150

47K

R15

347

KR

151

10KR205

47KR203

22RR17322RR17422RR17622RR17222RR17822RR17922RR17722RR175

22RR200

22RR201When change to THGBMDG5D1LBAIL, mount C131/C133

DAT0A3

DAT1A4

DAT2A5

DAT3B2

DAT4B3

DAT5B4

DAT6B5

DAT7B6

RSTnK5

DSH5

CLKM6

VDDIM C2

VCCQ C6

VCCQ M4

VSSQ P6

VSS E7VSS A6

VSS G5

VSS H10

VSSQ P4VSSQ N5VSSQ N2VSSQ C4

VCCQ N4

VCCQ P3

VCCQ P5

VCC E6

VCC F5

VCC J10

VCC K9

VSS K8VSS J5

CMDM5

MTFC4GACAJCN-1M WTU11

iEMMC


i EMMCi EMMC

UM


atics

UM

2488 - Rev 5

page 41/56

Figure 24. QSPI

11 19

QSPITitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

QSPIQSPI_IO1QSPI_IO0QSPI_CLK

QSPI_CS1

QSPI_IO2QSPI_IO3

QSPI_IO5QSPI_IO4

QSPI_IO6QSPI_IO7

QSPI_CS2

QSPI


QSPI_BK1_NCS

QSPI_CLK


3V3

PF9

PF6

PG6

3V3

3V3

PD11

PF7

QSPI_CLK QSPI_CLK

QSPI_CLK

PG9

PG14

PH2

PH3

Twin Quad SPI Flash solutions:

One Twin Quad SPI Fllash U2:MT25TL01GHBB8ESF-0SIT U1:NA

Two Quad SPI Fllash U1:MT25QL512ABB8ESF-0SIT U2:MT25QL512ABB8ESF-0SIT R14/R3/R2/R9,/SB2,/C15 ON R53/R62/R54/R56/R60/SB8/SB48 OFF

R53/R62/R54/R56/R60/SB8/SB48 ON R14/R3/R2/R9,/SB2,/C15 OFF

QSPI_BK1_IO0

QSPI_BK1_IO1 QSPI_BK1_IO2

QSPI_BK1_IO3

QSPI_BK1_NCS

QSPI_BK2_IO0


QSPI_BK2_IO3

QSPI_BK2_IO0


QSPI_BK2_IO3

QSPI_BK1_NCSSB7

10KR36

10KR53DNF

100nFC38

100nFC15

SB233RR69 33RR14

33RR65 33RR9

N/AR62 DNF

N/AR60 DNF

N/AR56 DNF N/AR54 DNF

33RR31 33RR30 33RR3 33RR2

PF10

CS#7

DQ18

NC6

NC5 NC 12

NC 11

Vss 10

W#/Vpp/DQ2 9

HOLD#/DQ31

VCC2

NC3

CLK 16

DQ0 15

NC4 NC 13

NC 14

MT25QL512ABB8ESF-0SITU1

iQSPI


iQSPI

iQSPI

iQSPIiQSPIiQSPI

iQSPI

iQSPIiQSPIiQSPI

SB48

iQSPIQSPI_BK2_NCS

QSPI_BK2_NCS

SB8

PF10

CS#7

DQ18

NC6

NC5 NC 12

NC 11

Vss 10

W#/Vpp/DQ2 9

HOLD#/DQ31

VCC2

NC3

CLK 16

DQ0 15

NC4 NC 13

NC 14

MT25QL512ABB8ESF-0SITU2

UM


atics

UM

2488 - Rev 5

page 42/56

Figure 25. 4.3” LCD

12 19

LCD4.3Title:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

Backlight driver & PFC of LCD panel

LCD_RST

LCD_INT

LCD_SDALCD_SCL

LCD_HSYNCLCD_VSYNC

LCD_CLK

LCD_DE

3V3

LCD_BL_ALCD_BL_K

BLGNDBLVDD

LCD_BL

BLGNDBLGNDBLGND

VL VH

LCD_DISP

LCD_B0

LCD_G0

LCD_R0LCD_R1LCD_R2LCD_R3LCD_R4LCD_R5LCD_R6LCD_R7

LCD_G1LCD_G2LCD_G3LCD_G4LCD_G5LCD_G6LCD_G7

LCD_B1LCD_B2LCD_B3LCD_B4LCD_B5LCD_B6LCD_B7

BLVDD

3V3 BLVDD

Default I2C Address : 01110000

LCD_R[0..7]

LCD

LCD_R[0..7]LCD_G[0..7]LCD_B[0..7]LCD_HSYNCLCD_VSYNCLCD_DELCD_DISPLCD_CLKLCD_INT

LCD_BLLCD_RST

LCD

LCD_I2C


LCD_CLK

LCD_DELCD_DISP

LCD_INT

LCD_SDALCD_SCL

LCD_BL

4.7uFC123

4.7uFC105

10nFC103

10nFC129

100nFC137

0RR190

4K7R192

4.7uFC98

100nFC104

FCM1608KF-601T03L8

FCM1608KF-601T03L6

4.7uH 1A 180RL7

STPS1L40MD8

Vi1

Rset 2GND3 FB 4

NC 5Vo 6

EN7

SW8

PGND9

STLD40DPURU13

100KR187

4K7R142

SDASCL

I2C

PD13PD12

PI15

PI9PI12PI14

PJ0PJ1PH9PJ3PJ4PJ5PJ6

PJ7PJ8PJ9PJ10PJ11

PK0

PK2

PG2PI0PI1

PD7

PJ12PJ13PJ14PJ15PK3PK4PK5PK6

PK7

LCD_RST

10RR181

SB31

SB305V

iLCDMatched Net Lengths [Tolerance = 100mil]

iLCDiLCDiLCDiLCD

iLCD

DE34

CLK30

HSYNC32

VSYNC33

DISP31

GND35

GND3

B0 21

VDD4

VBL+2

VBL-1

INT38

SCL39

SDA40

RESET37

B1 22

B2 23

B3 24

B4 25

B5 26

B6 27

B7 28

R0 5

R1 6

R2 7

R3 8

R4 9

R5 10

R6 11

R7 12

G0 13

G1 14

G2 15

G3 16

G4 17

G5 18

G6 19

G7 20

GND29

GND36

RK043FN48H-CT672BU33

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Figure 26. Audio

13 19

AudioTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

Default I2C Address:00110103V3

1V8

3V3

PG10

PD13PD12

MICBIAS1

PE4

3V3

1V8

3V3

1V8

3V3

PI4

MIC

_DA

TA

MI C

_CLK Right

Left

Jack in blue

SPK Left

SPK Right

Jack out Green

3V3

AudioSAI_SDB

SAI_FSA

Audio_Int

SAI_SDA

SAI_SCKA

SAI_MCKA

SAI

SAI2_MCLKA

SDASCL

I2CAudio_I2C

PDM


SAI4_CK2SAI4_D2

SB41 SB42

SB37

SB40

SB38

SB32

SB39

2.2uFC109

2.2uFC1112.2uFC110

1 00n

F

C128

1 00n

F

C152

100n

F

C127

100n

F

C136

1uF

C134

1uF

C132

1uFC151

1uFC147

1uFC148

4 .7u

F

C125

4.7u

F

C138

4.7uFC142

4.7uFC149

4.7uFC150

1 00n

F

C183

10KR242

0RR1910RR189

R193 N/ADNF4K7R195

1 00n

F

C114

100n

F

C113

20RR183

20RR182

I/O11

GND2

I/O23 I/O3 4GND 5I/O4 6ESDA6V1BC6U19

GND5

LR 2

CLK 3VDD1

DOUT 4

MP34DT01TR-MU34

SAI2_MCLKA

DATACLK

PDM

PE5

PI5

PI6PI7

34

6

PJ3028B-3_GRCN9

ADCDAT1F2

ADCLRCLK1/GPIO1G3

AGND D6

CPVDDG9

CPVOUTN H7

CPVOUTP G7

CS/ADDR G2

DACDAT1E4

CPGND H9

DCVDDF1

DBVDDD2 DGND E2

CPCB H8

AVDD1D9

BCLK1G1

CIFMODE A4

CPCA G8

DMICCLKC6

AGND E7

AGND E8

AVDD2D8

GPIO2/MCLK2 E1

GPIO3/BCLK2H2

GPIO4/LRCLK2F4

GPIO5/DACDAT2H3

GPIO6/ADCLRCLK2G4 GPIO7/ADCDAT2E5

GPIO8/DACDAT3H4

GPIO9/ADCDAT3F5

GPIO10/LRCLK3H5 GPIO11/BCLK3F6

HP2GND F7

HPOUT1FB G5

HPOUT1L H6HPOUT1R G6

HPOUT2N F9

HPOUT2P F8

IN1LND7 IN1LPC8

IN1RNB7 IN1RPC7

IN2LN/DMICDAT1B9 IN2LP/VRXNB8

IN2RN/DMICDAT2A9 IN2RP/VRXPA8

LDO1ENAD4

LDO1VDDE9

LDO2ENAD5

LDO2VDDD1

LINEOUT1N C5

LINEOUT1P B5

LINEOUT2N C4

LINEOUT2P B4

LINEOUTFB A6

LRCLK1E3

MCLK1 D3

MICBIAS1 A7

MICBIAS2 B6

REFGND A5

SCLK H1SDA F3

SPKGND1 A1

SPKGND2 C1

SPKMODE A3

SPKOUTLN B1

SPKOUTLP A2

SPKOUTRN C3

SPKOUTRP B3

SPKVDD1B2

SPKVDD2C2

VMIDC C9

VREFCE6

WM8994ECS/RU15

34

6

PJ3028B-3_BECN8

4 .7 u

F

C144

CN17

CN18

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Figure 27. STMod+

14 19

STMod+Title:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

PA0

STMOD#11-INTSTMOD#12-RST

STMOD#1-NSS

STMOD#3-MISOpSTMOD#2-TX

PI11

PH10PD5PB15

PD6PI2

PD3

STMOD#2-MOSIp

STMOD#3-RXSTMOD#4-SCK

STMOD#8-MOSIs


STMOD#17STMOD#18STMOD#19STMOD#20

PA4PA3

PH1

PH12

PH4PH8

5V

PD12PI3PB14PD13

STMod+

ATOM FH200210C-12000

STMOD#1-CTS

STMOD#4-RTS

PA15

PD4

STMOD_I2C STMOD_SDASTMOD_SCL

STMOD_SCL

STMOD_SDASTMOD#9-MISOs

SB21SB19SB13

SB11

SB10

SB16

SB12

SB9

12345678910

11121314151617181920

STM

od+

Socket 10X2 STMod+P1

SDASCL

I2CPD13PD12

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Figure 28. TAG

15 19

TAGTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

Only footprint with Cable: TC2050-IDC-NL

TDI

RESET#TRST

TMS/SWDIO

TCK/SWCLK

TDO/SWO

PA13

PA14

PB3

3V3

1 102 93 84 75 6

TC2050-IDC-NLCN16

DNF22RR237

22RR236

22RR24122RR24022RR23922RR238

Place this connector close to STDC, they will share the same ESD components

PA15

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Figure 29. ARDUINO® connectors

16 19

Arduino ConnectorTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

Arduino uno connector

3V35V

A0A1A2A3A4A5

RX/D0TX/D1

D2

D4PWM/D3

PWM/D5PWM/D6

D7

D8PWM/D9

PWM/CS/D10

SDA/D14SCL/D15 PD12

PD13

NRST

VIN

NRSTSCK/D13

MISO/D12PWM/MOSI/D11

AVDDGND

VREF+

ARD_A0ARD_A1ARD_A2ARD_A3

ARD_A4

ARD_A5



ARD_D6ARD_D7PC0

PF8PA0_CPA1_C

PC2_C

PC3_C

PB6PG3

PK1PA8PE6PI8

PE3

PB4PH15

PB15PI2PD3

ADC3_IN1

ADC3_IN0

ADC12_IN1ADC12_IN0ADC3_IN7ADC123_IN10

I2C4_SDA PD13

PD12I2C4_SCL

USART1_RXUSART1_TX

TIM1_CH1

TIM13_CH1

TIM8_CH3NTIM3_CH1, SPI2_NSSTIM12_CH2, SPI2_MOSISPI2_MISOSPI2_SCKIOREF

NRST3V35VGNDGNDVIN

POW

ERA

IN

PD12PD13

WARNING voltage applied to VIN <11.5V

TIM15_CH2

PA6

E5V

ARD_I2C

Socket 8x1

12345678

CN6Socket 10x1

123456789

10

CN2

Socket 8x1

12345678

CN3

Socket 6x1

123456

CN7

GREENLD8

3V3

SB29

1MR126

510RR234

BSN20

1

23

GSD

T5

1KR130

C80N/A

DNF

SB20

SB33

SB35

SB34

SB36

SDASCL

I2C

PB7

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Figure 30. STLINK-V3E-SWD module

17 19

ST-LINK/V3E-SWD ModuleTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

GNDDetect

STLK_VCP_RXSTLK_VCP_TX

T_SWCLKa

T_SWDIO_INT_SWDIOa

T_SWOa

T_NRSTa

3V3_STLK MCO

LED_STLK

STLK_SWDIOSTLK_SWCLK

T_PWR_ENT_PWR_EXT

T_SW_DIR

USB_DEV_HS_NUSB_DEV_HS_P

3V3_STLK

USB_DEV_HS_NUSB_DEV_HS_P

iUSB

Matched Net Lengths [Tolerance = 0.2mm]Impedance Constraint [Min = 85.00 Max = 95.00 ]

iUSB

T_SWCLKT_SWDIO

T_SWO

T_NRST

MCO

T_PWR_ENT_PWR_EXT

T_SW_DIR

T_SWCLKaT_SWO

T_SWDIOa

T_NRSTT_VCP_RX T_VCP_TXGNDDetect

KEY

STDC14 Receiver

JP3100nFC169

10K

R199

10K

R197

2.2uFC1153KR185

4K7R208

4K7R209100nFC167

T_SW_DIR

T_SWCLKT_SWO

T_NRST

MCO

T_SWDIO

LED_STLK

3V3_STLK

330R

R227

330R

R226

T_PWR_EXTT_PWR_EN

T_VCP_TXT_VCP_RX

T_VCP_TXT_VCP_RX

Header 4x11 2 3 4

CN5

DNF

3V3_STLK

Must be on a border or the PCB.

10K

R210

20pFC119DNF

USB_uB_105017-0001

VBUS 1

DM 2

DP 3

ID 4

GND 5

Shield 6

USB

_Mic

ro-B

rec e

p tac

l e

Shield 7

Shield 8

Shield 9

EXP 10

EXP 11

CN14

5V_USB_CHGR

USB_DEV_HS_CN_NUSB_DEV_HS_CN_P

iUSB

iUSB

Silkscreen = Reserved

T_VCC must be to connected to VDD_MCU of the Target

JP2DNF

100RR194

100RR207

100RR235

100RR186

LD_BICOLOR_CMS

21

4 3

Red

Green

LD2

Capacitor Close to pin 1100pF

C179

22R R14522R R165

T_SWDIOT_SWCLK

22R R171 T_SWOa

T_SWO

T_SWDIO

T_SWCLK

ESDALC6V1W5

1

32

4

5

U10

T_NRST

ESDALC6V1W5

1

32

4

5

U12

T_VCP_RX

T_VCP_TX

STLK_SWDIO

STLK_SWCLK

ESDA7P60-1U1M

1 2U27

T_NRSTa22R R18022R R18422R R188 STLK_VCP_RXSTLK_VCP_TX

VDD4 OUT 3

EN1 GND 2

25MHzX3

GND 3NC4

D-5 D- 2

D+6 D+ 1

ECMF02-2AMX6U26

1 23 45 67 8

1091113

1214

STDC14

CN4

T_JTDI

T_JTDIT_JTDI

3V3

3V3

T_VCC AIN/PA0 N3

T_NRST/PA6 P3

T_PWR_EN/PB0 R5T_PWR_EXT/PB1 R4

USB_DEV_HS_N/PB14R14

USB_DEV_HS_P/PB15R15

STLK_MCO/PA8 F15

STLK_LED/PA10 D15

STLK_SWDIO/PA13A15

STLK_SWCLK/PA14A14

OSC_IN/PH0G1

OSC_OUT/PH1H1

NRSTJ1

BOOT0D6

PDR_ONC6

STLK_VCP_RX/PG9 C10

STLK_VCP_TX/PG14 A7

T_SWCLK/PH6 M11

T_SWDIO_IN/PH7 N12

T_SWDIO_OUT/PF9 L2

T_SWO/PD2 D12

V12_OTGPHYJ14

REXT_OTGPHYJ15

GNDDetect/PG5 K13

HW_TYP_0/PI4 D4

HW_TYP_1/PI5 C4

T_SW_DIR/PA7 R3

ST-LINKV3E_SWDU16A

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Figure 31. STLINK-V3E-SWD power module

18 18

ST-LINK/V3E-SWD Power ModuleTitle:


Revision:


MB1381B 0206-SEP-19

H745XI

Date:-

Variant:

3V3_STLK

Ceramic capacitor (Low ESR)

3V3_STLK

3.3 Volts ST-LINK3V3_STLK

5V

T_PWR_EXT

BAT60JFILM

D12

BAT60JFILMD10

1uF

C112

LD3985M33R51

2

GND3

4

BYPASSINH

Vin Vout

U14

10KR196

1K

R216

SHUNT_BKHW1

2K7R198

4K7R204

100nFC143

100nFC165

100nFC160

3V3_STLK

100nFC118

100nFC145

100nFC117

100nFC116

100nFC164

100nFC146

5V5 Volts Power Supply

5V_USB_STLK

BAT60JFILM

D13

BAT60JFILMD11

T_PWR_EXT

T_PWR_EN

100nFC141

100nFC153

100nFC139

100nFC166

3V3_STLK

1uFC163

4.7uFC162

5V_USB_STLK

T_PWR_EN

5 Volts ST-LINK

1KR215

10KR217

1uFC175

47KR218

1uF

C126

100nFC140

100nFC135

100nFC130

100nFC106

100nFC122

10nFC124

100nFC121

E5V

VBUS_FS2

5V_POE

E5V

VBUS_FS25V_POE

2.2uFC107

2.2uFC108

TRUE GREEN

LD4

REDLD3

IN5 OUT 1

GND

2

EN4 FAULT 3

STMPS2151U24

BAT60JFILMD9

USB_uB_105017-0001

VBUS 1

DM 2

DP 3

ID 4

GND 5

Shield 6

USB

_ Mic

ro-B

rece

p tac

l e

Shield 7

Shield 8

Shield 9

EXP 10

EXP 11

CN155V_USB_PWR

ESDA7P60-1U1M

12

U28

1uFC177

5V_USB_CHGR

5V_USB_CHGR

5V_USB_PWR

5V_USB_CHGR

5V_USB_CHGR

5V_USB_PWR1 23 45 67 89 1011 12

Shunt Fitted 1-2JP8

VBATC1

VSS

F9V

SSF8

VREF- N1VSSA M1

VREF+P1

VSS H9

VSS H10

VCAP2F13

VSS J6

VDDK4 VDDC5

VSS J7

VCAP1M10

VSS J8

VDDG13

VSS J9

VSS J10

VDDN10

VDDG3

VDDAR1

VDDC8

VDDC7

VDDF3

VDDJ12

VDDC9

VSS K6

VSS K7

VSS

F10

VSS

G6

BYPASS-REGL4

VDDN8

VDDN9

VDDJ13

VDDH13

VS S

G7

VSS

G8

VSS H6

VSS H7

VSS H8

VSS K8

VSS K9

VSS K10

VSS F12

VSS D5

VSS G2

VSS M8

VSS

G9

VSS

G10

VSS

M9

VSS

G12

VSS

D8

VS S

D7

VSS

F2V

SSH

12V

SSD

9V

SSF6

VS S

F7

ST-LINKV3E_SWDU16B

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2488 - Rev 5

page 49/56

Appendix A Federal Communications Commission (FCC) and IndustryCanada (IC) Compliance Statements

A.1 FCC Compliance Statement

Part 15.19

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) thisdevice may not cause harmful interference, and (2) this device must accept any interference received, includinginterference that may cause undesired operation.

Part 15.21

Any changes or modifications to this equipment not expressly approved by STMicroelectronics may causeharmful interference and void the user's authority to operate this equipment.

Part 15.105

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interferencewhen the equipment is operated in a commercial environment. This equipment generates, uses, and can radiateradio frequency energy and, if not installed and used in accordance with the instruction manual, may causeharmful interference to radio communications. Operation of this equipment in a residential area is likely to causeharmful interference in which case the user will be required to correct the interference at his own expense.

Responsible party (in the USA)

Terry BlanchardAmericas Region Legal | Group Vice President and Regional Legal Counsel, The AmericasSTMicroelectronics, Inc.750 Canyon Drive | Suite 300 | Coppell, Texas 75019USATelephone: +1 972-466-7845

A.2 IC Compliance StatementThis device complies with FCC and Industry Canada RF radiation exposure limits set forth for general populationfor mobile application (uncontrolled exposure). This device must not be collocated or operating in conjunction withany other antenna or transmitter.

Compliance Statement

Notice: This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to thefollowing two conditions: (1) this device may not cause interference, and (2) this device must accept anyinterference, including interference that may cause undesired operation of the device.Industry Canada ICES-003 Compliance Label: CAN ICES-3 (A) / NMB-3 (A).

Déclaration de conformité

Avis: Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts delicence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire debrouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillageest susceptible d'en compromettre le fonctionnement.Étiquette de conformité à la NMB-003 d'Industrie Canada: CAN ICES-3 (A) / NMB-3 (A).

UM2488Federal Communications Commission (FCC) and Industry Canada (IC) Compliance Statements

UM2488 - Rev 5 page 50/56

Revision history

Table 16. Document revision history

Date Revision Changes

8-Jan-2019 1 Initial release.

1-Apr-2019 2

Updated Figure 1 and Figure 2 on the cover page and reorganized the beginning of the document:• Updated Features• Updated Ordering information• Updated Product marking• Added Codification• Added Development environment

6-May-2019 3 Updated the description of the SMPS/LDO power supply default modes in Section 6.4 PowerSupply.

12-Sep-2019 4

Updated the descriptions of pins ARD_D0 and ARD_D1 of ARDUINO® connector CN6 in Figure 29.ARDUINO® connectors and correspondingly in Table 6. ARDUINO® connectors (CN2, CN3, CN6,and CN7).

Updated all schematics related to STM32H745I-DISCO in Section 9 Electrical schematics.

31-Jan-2020 5 Updated SMPS/LDO power supply in Section 6.4 Power supply for hardware/firmware mismatchdeadlock recovery.

UM2488

UM2488 - Rev 5 page 51/56

Contents

1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2.1 Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Development environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.2 Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.3 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4 Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

5 Delivery recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

6 Hardware layout and configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

6.1 STM32H753I-EVAL Evaluation board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6.2 STM32H753I-EVAL Evaluation board mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.3 Embedded ST_LINK/V2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.4 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.5 Clock sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6.6 Reset sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6.7 Audio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.8 USB OTG_FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.9 eMMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.10 Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.11 Power over Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.12 SDRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.13 Quad-SPI NOR Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.14 Virtual COM port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.15 RGB LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.16 Buttons and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7 Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

7.1 ARDUINO® Uno V3 connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

UM2488Contents

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7.2 CN13 USB OTG_FS Micro-AB connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7.3 CN1 Ethernet RJ45 connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.4 LCD RGB connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.5 CN2 STMod+ connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7.6 CN14 STLINK-V3 USB Micro-B connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7.7 Audio stereo speaker header connectors (CN17 and CN18) . . . . . . . . . . . . . . . . . . . . . . . . . 20

7.8 CN9 audio line output (green jack) connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7.9 CN8 audio line input (blue jack) connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7.10 CN16 TAG connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7.11 CN4 STDC14 connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7.12 CN15 USB power connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8 STM32H745I-DISCO and STM32H750B-DK I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . .23

9 Electrical schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Appendix A Federal Communications Commission (FCC) and Industry Canada (IC)Compliance Statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

A.1 FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

A.2 IC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

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List of tablesTable 1. List of available products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Table 2. Codification explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Table 3. ON/OFF convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Table 4. Power-supply related jumper and solder bridge settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Table 5. Assignment of control ports to LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Table 6. ARDUINO® connectors (CN2, CN3, CN6, and CN7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Table 7. CN13 USB OTGFS micro-AB connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Table 8. CN1 Ethernet RJ45 connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Table 9. LCD RGB connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Table 10. CN2 STMod+ connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 11. CN14 USB Type-B connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 12. CN16 TAG connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Table 13. STDC14 connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Table 14. CN15 USB Micro-B connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Table 15. STM32H745I-DISCO and STM32H750B-DK I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Table 16. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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List of figuresFigure 1. STM32H745I-DISCO and STM32H750B-DK boards (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 2. STM32H745I-DISCO and STM32H750B-DK boards (bottom view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 3. Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Figure 4. STM32H745I-DISCO and STM32H750B-DK Discovery board top layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Figure 5. STM32H745I-DISCO and STM32H750B-DK Discovery board bottom layout . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 6. STM32H745I-DISCO and STM32H750B-DK Discovery board mechanical drawing (bottom view) . . . . . . . . . . 10Figure 7. CN13 USB OTG Micro-AB connector (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Figure 8. CN1 Ethernet RJ45 connector (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Figure 9. LCD RGB connector (footprint) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Figure 10. CN14 USB Micro-B connector (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Figure 11. CN16 TAG debugging connector (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Figure 12. CN15 USB Micro-B connector (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Figure 13. STM32H745I-DISCO and STM32H750B-DK schematic (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Figure 14. STM32H745XI microcontroller I/Os . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Figure 15. STM32H750XB microcontroller I/Os . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Figure 16. STM32H745XI microcontroller power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Figure 17. STM32H750XB microcontroller power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Figure 18. Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Figure 19. Power over Ethernet (PoE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Figure 20. USB OTG_FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Figure 21. FDCAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Figure 22. SDRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Figure 23. eMMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Figure 24. QSPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Figure 25. 4.3” LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Figure 26. Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Figure 27. STMod+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Figure 28. TAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Figure 29. ARDUINO® connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Figure 30. STLINK-V3E-SWD module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Figure 31. STLINK-V3E-SWD power module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

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