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HT-CN410DVH
IC251, VFD Driver (PT6311)
Pin Description:
Pin Name
SW1 to SW4
DOUT
DIN
NC
CLK
STB
K1 to K4
VDD
SG1/KS1 to SG12/KS12
SG20/GR9 to SG19/GR10
SG18/GR11 to SG13/GR16
VEE
GR1 to GR8
LED1 to LED5
GND
OSC
I/O
I
General Purpose Input pins
Data Output Pin (N-Channel, Open-Drain)
O
This pin outputs serial data at the falling edge of the shift clock (starting from the
lower bit)
Data Input Pin
I
This pin inputs serial data at the rising edge of the shift clock
(starting from the lower bit)
-
No Connection
Clock Input pin
I
This pin reads serial data at the rising edge and
outputs data at the falling edge.
Serial Interface Strobe pin
The data input after the STB has fallen is
I
processed as a command.
When this pin is "HIGH", CLK is ignored.
Key Data Input Pins
I
The data inputted to these pins are latched at
the end of the display cycle.
-
Logic Power Supply
High-Voltage Segment Output Pins
O
Also acts as the Key Source
O
High Voltage Segment / Grid Output Pins
-
Pull-Down Level
O
High- Voltage Grid Output Pins
O
LED Output Pin
-
Ground Pin
Oscillator Input Pin
I
A resistor is connected to this pin to determine
the oscillation frequency
Function
64
Pin No.
1 to 4
5
6
7
8
9
10 to 13
14, 33, 45
15 to 26
36 to 35
32 to 27
34
44 to 37
50 to 46
51
52
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