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Pin No.
Pin Name
41
TUN(R)
42
CHG(R)
43
AUX(R)
44
RSELO
IC, LC75853NW
Pin No.
Pin Name
1 ~ 32
S1 ~ S32
33
NC
34 ~ 39
S34 ~ S39
40
NC
41 ~ 43
COM1 ~ COM3
44 ~ 49
KS1 ~ KS6
50 ~ 52
KI1 ~ KI3
53, 54
KI4, 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 pin.
-
Connected to ground.
I
Signal input pin.
O
Input selector output pin.
I/O
O
LCD segment output.
-
Not connected.
-
Not used.
-
Not connected.
O
LCD common driver output.
O
Key scan output.
I
Key scan input. These pins have build-in pull-down resistor.
-
Connected to GND.
-
Test pin. (Connected to GND.)
-
Power supply.
Used for applying the LCD drive 2/3 bias voltage externally. (Must be connected to VDD2 when
I
a 1/2 bias drive scheme is used.)
Used for applying the LCD drive 1/3 bias voltage externally. (Must be connected to VDD1 when
I
a 1/2 bias drive scheme is used.
-
Ground.
I/O
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.
O
Serial data interface pin; data transferred.
Description
Description
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