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HCD-DX400
PANEL BOARD IC1 PT6311 (VFD Driver, Key Scanning)
Pin No.
Pin Name
1 to 4
SW1 to SW4
5
DOUT
6
DIN
7
NC
8
CLK
9
STB
10 to 13
K1 to K4
14
VDD
SG1/KS1 to
15 to 17
SG11/KS3
SG4/KS4 to
18 to 29
SG11/KS11
30
SG16
SG17/GR12,
31, 32
SG18/GR11
33
VDD
34
VEE
SG19/GR10,
35, 36
SG20/GR9
37 to 40
GR8 to GR5
41 to 44
GR4 to GR1
45
VDD
46 to 50
LED5 to LED1
51
GND
52
OSC1
22
I/O
I
General purpose input pins, Not used
O
Data output Pin
I
Data input Pin
-
Not used
I
Clock input Pin
I
Serial interface strobe Pin
I
Key data input Pins
-
Logic power supply
O
High-Voltage Segment output Pins, Also acts as the Key source
O
High-Voltage Segment output Pins
O
High-Voltage Segment output Pins, Not used
O
Grid output Pins
-
Power supply
-
Pull-Down Level
O
Grid output Pins
O
Grid output Pins
O
Grid output Pins, Not used
-
Logic power supply
O
LED output Pin, Not used
-
Ground
I
Oscillator input Pin
Description
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