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Pin No.
Pin name
46
XPOWLT
47
RESERVE
48
XAPC OFF
49
–––––––––
50 to 64
SEG14 to SEG0
65 to 68
COM3 to COM0
69 to 71
V3 to V1
72, 73
C1, C0
74
STOP
75
TEST
76
BBSW
77
–––––––––
78
RESET
79
XIN
80
XOUT
I/O
O
Latch signal output to the power control (IC401).
O
Not used (Fixed at "H").
O
APC mute signal output terminal. "L": mute
—
Not used (open).
O
Segment drive signal output to the liquid crystal display.
O
Common drive signal output to the liquid crystal display.
O
Bias signal output to the liquid crystal display driver.
O
Capacitor connected terminal for the liquid crystal display driver voltage-up.
O
VCD control stop signal output terminal. Not used (Fixed at "L").
I
Test terminal for IC (Fixed at "L").
O
ON/OFF control signal output to the headphone amplifier (IC302).
—
Not used (open).
System reset signal input from the power control (IC401). "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to
"H"
I
System clock input terminal.
—
Not used (OPEN).
– 10 –
Description
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