PT6312_10 Datasheet, PDF (4/21 Pages) Princeton Technology Corp – VFD Driver/Controller IC

VFD Driver/Controller IC
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URL: http://www.princeton.com.tw
PT6312
PIN DESCRIPTION
Pin Name
SW1 to SW4
DOUT
DIN
GND
CLK
STB
K1 to K4
VDD
SG1/KS1 to SG6/KS6
SG7 to SG11
SG12/GR11
SG13/GR10 to SG16/GR7
VEE
GR6 to GR1
LED1 to LED4
OSC
I/O
Description
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).
- Ground pin
Clock input pin
I This pin reads serial data at the rising edge and
outputs data at the falling edge.
Serial interface strobe pin
I
The data input after the STB has fallen is
processed as a command. When this in is
“HIGH”, CLK is ignored.
Key data input pins
I The data inputted to these pins is latched at the
end of the display cycle.
- 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/grid output pins
- Pull-down level
O High-voltage grid output pins
O LED output pin
Oscillator input pin
I A resistor is connected to this pin to determine
the oscillation frequency.
Pin No.
1 to 4
5
6
7, 43
8
9
10 to 13
14, 38
15 to 20
21 to 25
26
28 to 31
27
32 to 37
42 to 39
44
PT6312 V2.6
-4-
December, 2005