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Pin No.
Pin Name
40
TP(R)
41
TUN(R)
42
CD(R)
43
AUX(R)
44
RSELO
IC, LC75854W
Pin No.
Pin Name
1
S1
2
S2
3 ~ 37
S3 ~ S37
38 ~ 39
S38 ~ S39
40 ~ 43
COM1 ~ COM4
44 ~ 45
KS1 ~ KS2
46 ~ 49
KS3 ~ KS6
50 ~ 54
KI1 ~ KI5
55
TEST
56
VDD
57
VDD1
58
VDD2
59
VSS
60
OSC
61
DO
62
CE
63
CL
64
DI
I/O
I
Signal input pins.
O
Input selector output pin.
I/O
O
LCD segment output.
O
LCD segment ouptut. (Not used)
O
LCD segment output.
O
LCD segment output. (Not used)
O
LCD common driver output.
O
Key scan output. (Not used)
O
Key scan output.
I
Key scan input. These pins incorporate pull-down resistors.
–
Test pin. (Connected to GND)
–
Power supply.
2/3 bias voltage is applied to the LCD drive externally.
I
(Must be connected to VDD2 when a 1/2 bias drive scheme is used)
1/3 bias voltage is applied to the LCD drive externally.
I
(Must be connected to VDD1 when a 1/2 bias drive scheme is used)
–
GND.
I
Resistor and capacitor are attached externally form an oscillator circuit.
O
Serial data interface pin; output data.
O
Serial data interface pin; chip enable.
O
Serial data interface pin; synchronization.
I
Serial data interface pin; data transferred.
Description
Description
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