122
HCD-FL7D
Pin No. Pin Name I/O Description
81 VSS-(CPU) —
Ground terminal (for CPU)
82 X1 I
System clock input terminal (4 MHz)
83 X0 O
System clock output terminal (4 MHz)
84 VCC-(CPU) —
Power supply terminal (+3.3V) (for CPU)
85 to 100 G1 to G16 O
Grid drive signal output to the fluorescent indicator tube
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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