Sharp R-408JK Service Manual page 23

Pin No. Signal I/O
73 VCC IN
74 VREF IN
75 AVSS IN
76 COM3 OUT
77 COM2 OUT
78 COM1 OUT
79 COM0 OUT
80 VL3 IN
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.) LCD (Pin No.)
SEG0 (72) ................................ SEG 0
SEG1 (71) ................................ SEG 1
SEG2 (70) ................................ SEG 2
SEG3 (69) ................................ SEG 3
SEG4 (68) ................................ SEG 4
SEG5 (67) ................................ SEG 5
SEG6 (66) ................................ SEG 6
SEG7 (65) ................................ SEG 7
SEG8 (64) ................................ SEG 8
SEG9 (63) ................................ SEG 9
SEG10 (62) ............................... SEG 10
Power source voltage : GND(0V).
A/D converter power source voltage : GND(0V).
The power source voltage to drive the A/D converter. Connected to GND.
A/D converter power source voltage : -5.0V.
The power source voltage to drive the A/D converter.
Terminal not used.
Common data signal.
Connected to LCD signal COM1.
Common data signal.
Connected to LCD signal COM2.
Common data signal.
Connected to LCD signal COM3.
Power source voltage input terminal.
Standard voltage for LCD. Connected to GND.
21
Description
LSI signal (Pin No.)
SEG11 (61) ............................... SEG 11
SEG12 (60) ............................... SEG 12
SEG13 (59) ............................... SEG 13
SEG14 (58) ............................... SEG 14
SEG15 (57) ............................... SEG 15
SEG16 (56) ............................... SEG 16
SEG17 (55) ............................... SEG 17
SEG18 (54) ............................... SEG 18
SEG19 (53) ............................... SEG 19
SEG20 (52) ............................... SEG 20
SEG21 (51) ............................... SEG 21
R-408JK
R-408JW
LCD (Pin No.)