-31-
Pin No.
Pin Name
I/O
Description
45
46
47
48
49
50
51
52
53-59
60-67
68-75
76-79
80-91
92-95
96
97
98
99
100
IC DESCRIPTION-4/4 (TMP87CM24)-2/2
P55
P56
P57
VAREF
VASS
VSS2
VDDÇP
CLKSETTING
P81-P87
P70-P77
P60-P67
P90-P93
S11-S0
COM3-COM0
V3
V2
C1
C0
VDD2
I
I
I
—
—
—
—
O
O
O
O
O
O
O
O
O
O
O
—
Key matrix signal input.
Key matrix signal input.
Key matrix signal input.
Analog reference voltage inputs(High)
Analog reference voltage inputs(Low)
Ground
Power supply
LCD segment outputs. (Connected to power supply.)
LCD segment outputs. (Not connected.)
LCD segment outputs. (Not connected.)
LCD segment outputs.
LCD segment outputs.
LCD segment outputs.
LCD common otput.
LCD voltage booster pin. Capacitors are required between V3 pin and Ground.
LCD voltage booster pin. Capacitors are required between V2 pin and Ground.
LCD voltage booster pin. Capacitors are required between C0 and C1 pin and Ground.
LCD voltage booster pin. Capacitors are required between C0 and C1 pin and Ground.
Power supply
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9
2
8
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4
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9
8
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9
9
2
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4
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9
8
0
5
1
5
1
3
6
7
3
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