Application Circuit › Documents › DL5557.pdf · 2015-12-02 · k1 k2 k3 k4 resb k5 k6 k7 k8 vdd...

12D 120 STEPCHECK CALCULAOTR

Application Circuit

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√

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K10

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000

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Auto

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23242526272829303132

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48495051525354555657

K1

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RE

SB

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VD

DS

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3G

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CA

1C

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CA

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SW0SW1

K9K10S1C1

C2C3C4

S2S3S4S5S6S7S8S9

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C50.1u

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S28

SW1

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÷

%

Replay

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9

Check

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00

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M+

+/-

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00->0

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R1

10K

C4--C1S36-----------------------------------------S1

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=

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12-D Step Check (背面)

C40.1u

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SW0

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0

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x

C1

C20.1u

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SW

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C30.1u

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M- MRC

ON/CE

+

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Correct

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Check

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C10.1u

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ON/C

DL5557

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SW2 S4 K3

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C5 0.1u

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K9

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K10

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C5 0.1u

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ON AC

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S34 S31 S19 S2 S22 C2 S33 S29 S12 S15 S32 S23 S5 C3 S1 S11 S4 S27 S6 S21 S3 C1 C4 S17 S25 S28 S20 S26 S36 S13 S16 S24 S14 S35 S30 S18

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-2-

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OFF

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LOCAL

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EURO

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RATE

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ON.C/CE

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GT

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RATE FLASH

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TAX- RECALL

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TAX+ STORE

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SW0

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SW3

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SW1

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SW2

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悬空

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K1

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K2

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K4

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K5

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K6

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GND

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ADD

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ON/AC.ClEAR

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12位GTON

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120步

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12位

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GTON

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F

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0

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2

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12位GTON

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GTOFF

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ON/AC.ClEAR

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10位GTON

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10位

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GTON

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GTOFF

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10位

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ON/AC.ClEAR

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12位GTON

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COR

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UP

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CUT

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GTOFF-无GT功能 GTON -有GT功能 ON/AC不可清除

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标准太阳能电路 1.5V工作电压(1.2V—1.8V)

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4/5

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GTON ON/AC CLEAR-有GT功能 ON/AC可清除

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RATE-设定(TAX.EXCH）时RATE不会闪动(同原装机一样)

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RATE/FLASH-设定(TAX.EXCH)时RATE会闪动(同PCR200一样)

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99步

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112步

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105步

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99步

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元件尽量靠近IC

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注：A—特别100步 B—特别120步

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A

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B

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实物IC有一个脚是多余的不用邦，请查看PAD图。

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VDD

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C2 0.1u 0.1u C1 0.1u VDD

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C1和C2电容接VDD

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键盘上一定要用到此键

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关于 PCB按键布线的注意事项

因为线路的重叠和平行在 PCB上会产生一定的分布电容（特别是 PVC板），引起信号互相干扰，导致 IC不能正确判断按键动作，出现按键反应慢，反应错和无反应等现象，所以在进行 PCB按键布线时应注意以下几点：

1、在 PVC 板上布线时，同一面的线路应尽量平行少、距离大，不同面

的线路应尽量重叠少； 2、如果 PVC 板面积有限，可尽量缩小按键导电硅胶接触面大小，给线

路留下足够的空间避免从按键导电硅胶接触面上走过； 3、碳油走线在同面无其他平行线，背面无其他重叠线时可加粗走线，减

小按键回路电阻。 4、按键导电硅胶接触面建议画成花状，可减小分布电容且有利于压键接

触良好，推荐以下几种画法：

5、按键画的好不好，可把 IC 工作电压调到低电压来测按键反应情况，

如在低压下压任何按键都能快速正确的反应，则按键板没有问题了。以上注意事项和方法只适用于我司 IC

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PAD

Pad Assignment: No. Name X Y No. Name X Y No. Name X Y No. Name X Y

1 K1... -769.95 746.55 21 K10 -360.9 -746.55 40 S19 769.95 91.8 60 C3 -567.9 746.552 K2.. -769.95 638.55 22 S1 -257.4 -746.55 41 S20 769.95 182.7 61 C4 -661.95 746.553 K3 -769.95 546.3 23 S2 -153.9 -746.55 42 S21 769.95 273.6 4 K4 -769.95 455.4 24 S3 -50.4 -746.55 43 S22 769.95 364.5 5 RESB -769.95 364.5 25 S4 53.1 -746.55 44 S23 769.95 455.4 6 K5 -769.95 273.6 26 S5 156.6 -746.55 45 S24 769.95 546.3 7 K6 -769.95 182.7 27 S6 260.1 -746.55 46 S25 769.95 638.55 8 K7 -769.95 91.8 28 S7 362.7 -746.55 47 S26 769.95 746.55 9 K8 -769.95 0.9 29 S8 465.3 -746.55 48 S27 661.95 746.55

10 VDD -769.95 -90 30 S9 567.9 -746.55 49 S28 567.9 746.55 11 SW2 -769.95 -180.9 31 S10 661.95 -746.55 50 S29 465.3 746.55 12 SW3 -769.95 -271.8 32 S11 769.95 -746.55 51 S30 362.7 746.55 13 GND -769.95 -362.7 33 S12 769.95 -638.55 52 S31 260.1 746.55 14 CA1 -769.95 -454.5 NC 769.95 -546.3 53 S32 156.6 746.55 15 CA2 -769.95 -546.3 34 S13 769.95 -454.5 54 S33 53.1 746.55 16 CA3 -769.95 -638.55 35 S14 769.95 -362.7 55 S34 -50.4 746.55 17 CA4 -769.95 -746.55 36 S15 769.95 -271.8 56 S35 -153.9 746.55 18 SW0 -661.95 -746.55 37 S16 769.95 -180.9 57 S36.......-257.4 746.55 19 SW1 -567.9 -746.55 38 S17 769.95 -90 58 C1.. -360.9 746.55 20 K9 -464.4 -746.55 39 S18 769.95 0.9 59 C2.. -464.4 746.55

*The IC substrate should be connected to Vss in the PCB layout artwork.

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474849505152535455565758596061

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GND

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VDD

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比550D-3E多余一个脚不用邦,其他顺序一样。

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K1

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RESB

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5

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1

1

D D

C C

B B

A A

SOLAR

+

-

VDD

IC

VSS

1 1

Title

Size

Date: of

D1

LED

BT2

1.5V

D2

DIODE

C1>=10uF

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太阳能电路

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太阳能电路

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注明：C1>=10uF意思是C1大于等于10uF，如LCD面积大，建议配大一些的电容，特性会好很多。 C2如电源正负极已加0.1U，此处就不用加了（同一个电容）。

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0.1U C2

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附图

Application Circuit › Documents › DL5557.pdf · 2015-12-02 · k1 k2 k3 k4 resb k5 k6 k7 k8 vdd...

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Transcript of Application Circuit › Documents › DL5557.pdf · 2015-12-02 · k1 k2 k3 k4 resb k5 k6 k7 k8 vdd...