Vitek VT-2400 Circuit diagram

参考网络

DISPLAY

COM11COM22COM33COM44SEG15SEG26SEG37SEG48SEG59SEG610SEG711SEG812SEG913SEG1014SEG1115SEG12

SEG5

SEG6

SEG7

SEG8

AD1

RM

RT

OTP

GND
PT20
PT21
Reset
VPP
VDD

16

SEG9

SEG10

SEG11

SEG12

35

SEG936SEG837SEG738SEG639SEG540SEG243SEG441SEG342SEG1

SEG1233SEG1134SEG10

NC
NC
NC
NC
NC
NC

PT27/BZ

PT26

PT25/PDM2

PT24/SCL

PT23/SDA

PT22/PDM1

PT21/INT1
PT20/INT0

PT17
PT16

16

AD5
AD4

AD2

AD3

R2 R1

R4

1

GND

2

SIO

3

SCK

4

RESET

5

VPP

6

VCC

32
31
30
29
28
27
26

PT27

25

E+

24

SCL

23

SDA

22

PT23

21

PT22

20

PT21

19

PT20

18
17

PT16

R15 R17

R16

C14

R3

AD5

R3,R4留插件位

VDD C16

IC2

8
7
6

SCL

5

SDA

UNIT

ON/OFF/TARE

Z1

Z2

SR

E+

1

S+

2

S-

3
4

手动调零电路

R30、R31 为自动调零电路
R34、R35 为手动调零电路
R32、 R33无须接,除非调零失败

1

A0

VCC

2

A1

WP

3

A2

SCL

GND4SDA

E+

PT22

R34

R35

PT23

R30 R32R31

S+

R33

E+

R7

AD3

R8

AD2

C15

R9

AD1

R10

VDD

C2

R19

C3

LCD电压调节电阻

VDD

R12

C4

C5
C6

C1

VS

C7

R5

VDD

C17

C17要放在主IC的62脚附近

VDD

3V

R0

VBAT

供电接

C18

C18*

C18

插件电解电容

C18*

要放在

VDD

IC1-62

脚附近

R20

VBAT

R36

VS
E+

R21

R37

R22

COM1

COM2

48

49

LCA

50

LCB

51

V1

52

V2

53

V3

54

VDDA

55

VS

56

VGG

57

VSSP

58

CB

59

CA

60

VDDP

61

VDD

62

VSS

63

XOUT

64

XIN

TST1RST2VPP3NC4OP1O5REFO6FTB7FTC8VB9AGND10PT10/AD011PT11/AD112PT12/AD213PT13/AD314PT14/AD415PT15/AD5

R6

Reset

C8

LED

Q3

COM3

COM4

SEG1

SEG2

SEG3

SEG4

44

COM445COM346COM247COM1

IC1

OPIO

VPP

C11

C12

C13

OPIO

背光电路

CY-FOR-0157 A版

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