122
HCD-FLX9W
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
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9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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