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Pin No.
Pin Name
41
VSS
42
TX
43
TEX
44
VDD (+5V)
45
VFDP (–30V)
46
XSEL
47
—
48
LP CONTROL
49 to 66
OPEN
67 to 87
S21 to S1
88
1G
89
VDD (+5V)
90 to 100
2G to 12G
• Abbreviation
FL : Fluorescent indicator tube
24
I/O
–
Ground
–
Not used
–
Connected to ground
–
Power supply (+5V)
–
Pull down voltage (–30V)
O
Not used
–
Not used
O
LP control hold output
–
Not used
O
FL segment signal output
O
FL grid signal output
–
Power supply (+5V)
O
FL grid signal output
Function
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