AVR Peripheral Board

8/12/2019 AVR Peripheral Board

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Campus

Component

Pvt. Ltd.

AVR Peripheral Board


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AVR Development Board with Peripherals

Introduction:

AVR Peripherals Development Board is made from single sided non PTH PCB board.Board can work on 7V to 15V AC or DC supply. It has built-in reverse polarity protection.7805 voltage regulatorhas heat sink for heat dissipation so that it can supply 1Amp currentcontinuously without getting over heated. It has switches for reset and power. All the portsare connected to standard 10 pin Box Headerconnectors. Open pads for connectingmicrocontroller's pins to external devices are also provided.

Features: Support the following 40 pin AVR microcontroller

ATmega16

ATmega16L

ATmega32

ATmega32L

ATmega164/V

ATmega324/V

ATmega644/V

ATmega8535

ATmega8535L

Supports LCD with linear 16x1 pin-out

16x1 LCD , 16x2 LCD and 16x4 LCD

20x1 LCD, 20x2 LCD and 20x4 LCD 32x2 LCD and 32x4 LCD

40x2 LCD


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Supports GLCD (Graphical LCD)with linear 20x1 StraightBerg Male Strip

Connector

LCDcontrast adjusting throughPotentiometerprovided

All ports are connected to standard 10 pin Box Headerconnector and also a

separate StraightBerg male strip connectorfor each port

10 pin Box Headerconnector forIn System Programming (ISP) On board 4x4 matrix keypadwith TactileSwitches

On boardRTC (Real Time Clock)and externalEEPROM (Electrically Erasable

Programmable Read only Memory)with provision of CMOS 3.3V disc battery

backup

Provided quadseven segment common cathode 7-segmentdisplay on board

Provides eight LEDs for I/O testing

Buzzer provided on board for testing

Availability of Serial communication throughDB9Serial port

Provision of four miniaturepush-on Tactileswitches on board to get momentary

logic high/low for testing

Array of 8 miniature SPDT slide switches(DIP Packaged Switches)provided onboard to get high/low logic level (1/0) for testing

On board 12 MHz crystal oscillator

AC/DC input Socket for 7V to 15V AC or DC

Reverse polarity protected by using onboardBridge Rectifier

Voltage regulation provided by 7805 Voltage Regulator

Provides facility for resetting the board when required

Power supply ON/OFF switch provided on board

Warning:Current dissipation throughout boards all components and connectors should not

exceed than 1 Amp


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Hardware Description:

D Port

ISP Port

LCD Connector

Reset Switch

LEDs forI/O Trsting

Power LED

VCC

GND

VIN

On/Off Switch AC/DC Socket

Voltage Regulator

Bridge Rectifier

Potentiometer for contrastadjust of LCD and GLCD

Buzzer

Buzzer Connections

4x4 MatrixKeypad

LCD and GLCDData pins Connector

GLCD Connector

GLCD Control Pins

LCD and GLCDControl Pins

Keypad Connector

Quad CommonCathode 7 segment

Display

Quad Common

Cathode 7 segmentDisplay Connector

7 segment SwitchingTransistor Connector

B Port

A PortC Port

C Port A Port

B Port

D Port

USART Rx/Tx Pins

DIP Packaged SlideSwitch

Jumper to switch betweenLCD and GLCD Contrast Pin

LED Port

3V Battery Socket

EEPROM IC

RTC IC

EEPROM Connector

RTC Connector

RS232Communication DB9

onnector and Rx/TxConnections

ULN2003IC and ConnectorTactile Switches for

Momentary Logichigh/low (1/0)

Potentiometer forVoltage Divider Circuit

D Port

Microcontroller IC


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Notch



Power Supply Socket:

This power supply socket which actually named asAC/DC Socketprovides the

functionality to user to connect external power supply from Transformer, Batteryor

AdapterviaDC jack. User can provide maximum of 7V to 15V AC/DC power supply

through AC/DC socket. This is power supply designed into maximum protection

consideration so that it can even prevent reverse polarity DC power supply as well as ACpower Supply. It also includes 7805 Voltage Regulatorwhich provides regulated 5V DC

for Microcontroller and other I/O connectors.

GND, VCCand VINConnector:

This board also provides user to have an extra pins for Power supplies as shown in

figure. These pins are GND(0V), VCC (5V from Voltage Regulator) and VIN(Voltagesupplied to AC/DC Socket minus 1.4V). Five pins are provided for each type of supply.

User can connect these pins to external device by using Single Berg Wire.

On/Off Switch and Reset Switch:

On/Off switch is type of Sliding SPDTswitch which is used for only make power

supply on/off provided throughAC/DC Socket. Reset Switch is type ofPush on DPST

tactile switchwhich is used for only to make program reset.

10 pin Box Header Connector:

Pin Headers with plastic guide box around them are known as Box Headers or

Shrouded Headersand are normally only used in combination with a Flat Ribbon

Cable (FRC)connector. A notch(key) in the guide box normally prevents placing the

connector the wrong way around.Box Headercan be connected usingFRCs and also

Single Berg Wiresfor individual pin connections.

FRC Cable:

Two FRC Connectors can be connected with the help of FRC cable. FRC cable

has following pin configuration.


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A, B, C, D Port Connector:

40 pinATmegaseries microcontroller has four I/O ports generally. These Four

Port are expanded from Microcontroller IC separately by using 10 pinBox Headerfor

each port (A, B, C and D port). Among 10 pins 8 pins represents I/O pin of respective portth th

and 9 and 10 pin representsGNDand VCCrespectively. This is shown in figure.

LED Connector

Eight LEDs used for I/O testing are connected in common cathodeconfiguration.

Other terminal (anode) of LED connected to the LED port. This LED port can be directly

connected to any of A, B, C or D port'sBox HeaderthroughFlat Ribbon Cable(FRC).

LCD and GLCD Connector

This board featured with LCD and GLCD Connections. User can mount LCD or

GLCD on linearly placed Straight Berg Male Stripconnector. One 16 pin connector is

used to mount LCD and another 20 pin connector is used to mount GLCD. Ther is another

16 pin connector which is used to connect LCD or GLCD with I/O pins through SingleBerg Wire or Relimate Connector. Another connector is 10pin Box Header through

which User can connect LCDs or GLCDs Data Pins (D0-D7) to any of I/O port (A, B, C

or D) throughFRC. There are other 2 group of three pins ofBerg Male StripConnector

separately. Among them three pins which represented as RS (Register Select), RW

(Read/Write), EN (Enable) used for LCD as well as GLCD and other three pins CS1

(Chip Select 1), CS2 (Chip Select 2), RST (Reset) used for GLCD only. These Pins can be

connected through Single Berg WireorRelimateCable. Potentiometer used to adjust

contrast for LCD as well as GLCD. User just need to switch between LCD and GLCD by

using Jumper shown in Hardware description diagram.

Note: User can only connect either LCD or GLCD on the board.

Jumper to switch between LCDand GLCD Contrast Pin GLCD

LCD


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4x4 matrix Keypad and Connector:

This is onboard 4x4 matrix Keypad can be used as an input medium for different

applications made by sixteenpush-on Tactile Switches. Through this keypad User can

give numeral input to application as an information or may use as differential input for

make switch devices. This keypad has two types of connections- one is 10 pin Box

Headerand another is 10 pin Straight Berg Male StripConnector. User can use any one of

these as per the convenience.Box Headercan be connected throughFRCandBerg Male

Stripcan be connected through Single Berg WireorRelimate Connector.

Switches for Momentary Logic High/Low (1/0):Fourpush-on TactileSwitches are provided onboard for momentary logic control

i.e. High/Low (1/0). These switches can be connected by using Single Berg Wireor

RelimateConnector to I/O pins of Microcontroller.

Another Switch which is miniature Sliding SwitchinDIP packagealso known as

DIP switches. These used for the same purpose as above. These also can be connected by

using Single Berg WireorRelimateConnector.

Analog O/P Compare Connector:This board featured withAnalog O/P compareconnector which enables User to

connect external analog sensors into Voltage divider form. This connector can be

connected through Single Berg WireorRelimateConnector. To adjust resistance User

just need to tunePotentiometerprovided.

ULN2003 IC and Connector:

This board featured with onboard ULN2003 IC and its connections. The

ULN2003is a monolithic high voltage and high currentDarlington transistorarrays. Itconsists of seven NPN darlington pairs that features high-voltage outputs with common-

cathode clamp diodefor switching inductive loads. It can be used to drive High Voltage

and Current DC as well as Stepper Motors,Relaysand devices with high wattage ratings.

User just need to make connections between I/O pins and ULN I/P pins through Single

Berg wireorRelimateconnector. Devices that needs to control can be connected to O/P

pins as stated in picture.


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Connector forTransistor to Toggle

between SevenSegment Display

Seven Segment LEDDisplay Connector

Quad Seven Segment Display

Transistor BC547



RTC and EEPROM IC and Connector:

This board is also featured with the circuitry ofDS1307IC asRTC (Real Time

Clock)andAT24C02IC asEEPROM (Electrically Erasable Programmable Read Only

Memory). These both ICs are interfaced through TWI (Two Wired Interface)feature of

Microcontroller. User just needs to connect SCL, SDAand SQWpins to microcontrollers

corresponding TWIpins through Single Berg WireorRelimateConnector. ThisRTCIC

also has passive power supply by using 3V CMOS Batterysocket.

Serial Port (DB9 Conector) and Serial Communication:

This port is provided for the purpose of serial communication. This helps themicrocontroller to communicate with the peripheral device through USART feature.

When the user need to communicate through the serial port, the transmit data pin (TxD)

and receive data pin (RxD) need to be connected externally by the User to the

corresponding USART pins of Microcontroller. As there are two channels in MAX232

IC for converting RS232 logic to TTL logic and vice-versa. So this channel I/O is as

shown in picture.

Quad Seven Segment display Circuit and Connections:

This board featured with Quad Seven Segment LED Display circuit which

enables User to use and display into Seven Segment LED Displayin four digits. User just

need to connect any I/O port of microcontroller through Single Berg WireorRelimate

Connector, hereBC547trasnsitor used as a switch which can be used as toggle between

four Seven Segment Display. User can connect these transistor by using Single Berg Wire

orRelimateConnector to any I/O pins of microcontroller.

Serial RS232 logicData In/Out

through Channel 1

TTL logic DataIn/Out

through Channel 1

Serial RS232 logicData In/Out

through Channel 2

TTL logic DataIn/Out

through Channel 2


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ISP Connector

ISP (In System Programming) port provides connection between AVR

Development Board and AVR Programmer Kit. It has following configuration. It also

used as a power supply from USB (Universal Serial Bus) Cable. As this functionality

provided by Microcontroller IC itself, thus pins are directly connected to respective pins.


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Installation of Software:This guide will help User to installation of Software which are recommended for

Program Compiling and Downloading.

Step 1:

Double Click on WinAVRsoftware, then User will see window like this. Select language

and then press OK.

Step 2:

after clicking OK welcome window will appear, Click on Next >

Step 3:

Read License agreement and press I Agree


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Step 4:

Choose destination folder for installation. Press Next >

Step 5:

Select all checkboxes and then press Installbutton

Step 6:

Now Installing window will appear, Let the progress bar be filled completely


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Step 7:

After Installation complete window press Finish

Installation of WinAVR is completed

Now Install AVR Studio4

Step 1:

Double Click on AVRStudio4 installation file, then welcome window will appear, click

on Next >


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Step 2:

Click on I accept the terms of the agreementand then click on Next >

Step 3:

If User want to change destination folder for installation then click on Changeotherwise or after click on Next >


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Step 4:

Check Install/upgrade Jungo USB Driverand then click on Next >

Step 5:Click on InstallButton


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Step 6:

Let the installation be completed

Step 7:

After completion of installation click on FinishButton


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Building Programs in AVR Studio 4

Following are steps show how programming should develop step by step in AVR

Development Board. These steps will demonstrate to User a program which glows eight LEDs

serially. Its recommend User to use compiler 'WinAVR'and Editor 'AVRStudio4'.

Step 1:

Go to StartMenu > SelectAll Programs

Click onAtmel AVR ToolsFolder > Left Click onAVR Studio 4


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Step 2:

Loading Window will appear on Desktop

SelectNew ProjectNote: However if User wants to open existing project then user needs to click o Open Project

Step 3:

InProject typesection selectAVR GCCOption

Note: GCC used to Compiling Program written in Embedded C Language, whereas AVR

Assembler used to Compiling Program written in Assembly Language.


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Step 4:

Give a Project name whatever User wants

Check Crete initial fileand Create folderCheck boxes

PressNextButton

Step 5:

Two lists will be appeared, selectAVR Simulatoroption from left side list

Step 6:

Select Microcontroller for which User wants to write a program, hereATmega16shown as an

example. Press FinishButton

Warning:Don't give space in your Project Name; it will consider it as invalid name


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IDE will generate some windows which created platform to write a program for selected

Microcontroller i.e.ATmega16. User needs to write program in Middle window.

Step 7:

Write Down program to glow eight LEDs serially inEmbedded CLanguage

Step 8:

Once User completed Program go to main menu and then selectBuildoption > Click onBuildtocompile the program

Note:This is sample program User can write any type of program according to application


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Step 9:

If program doesn't contains any error it will give message as shown in picture and will generate

.hex file, else it won't generate .hexfile

Step 10:Now attach Microcontroller Development Board andAVR USB ProgrammerthroughISPPort

only.

Step 11:

Now openSinaprogSoftware, window will look like this

Note:Just deal with errors don't consider warnings, if User gets any number of warnings still

program can generate .hex file

Warning:Programmer should be connected to ISP port only, if you connect programmer via

FRC to any other port it may damage your programmer as well as your development board.


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Step 12:

Select .hexfile of your respective program

Path to find .hexfile

Go to Directory where you put your Project Folder > Open Folder named as your project name >

open defaultfolder > select .hexfile

Step 13:

Click onProgrambutton present in Flashsection

After Program will finish it will give you message Programming FlashOK


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Step 14:

Take oneFRCand connect its one end toLEDport

Connect another end toA port

Congrats! You successfully executed your Program

Note:Acoording to sample program we have connected LED port to A port, User can use any of

Microcontrollers I/O port acccording to modified program

Contact Us

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CampusComponent Pvt. Ltd.

Ackruti Chambers,

Office No. 308, 3rd Floor,

Near Laxminarayan Theater,

Swargate, Pune- 411037

Mobile : +91 9767444555

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[email protected]

AVR Peripheral Board

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