PT6315 Datasheet, PDF (5/26 Pages) Princeton Technology Corp – VFD Driver/Controller IC

VFD Driver/Controller IC
PIN DESCRIPTION
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PT6315
Pin Name
I/O
Description
Pin No.
LED1 to LED4
O
LED Output Pin
1 to 4
OSC
Oscillator Input Pin
I
A resistor is connected to this pin to
5
determine the oscillation frequency
DOUT
Data Output Pin (N-Channel, Open-Drain)
O
This pin outputs serial data at the falling
edge of the shift clock (starting from the
6
lower bit).
DIN
(Schmitt Trigger)
Data Input Pin
I
This pin inputs serial data at the rising edge
of the shift clock (starting from the lower
7
bit)
CLK
(Schmitt Trigger)
Clock Input Pin
I This pin reads serial data at the rising edge
8
and outputs data at the falling edge.
STB
(Schmitt Trigger)
Serial Interface Strobe Pin
I
The data input after the STB has fallen is
processed as a command.
9
When this pin is "HIGH", CLK is ignored.
K1 to K2
Key Data Input Pins
I The data inputted to these pins are latched 10 ,11
at the end of the display cycle.
VSS
-
Logic Ground Pin
12,44
VDD
-
Logic Power Supply
13,43
SG1/KS1 to SG16/KS16 O
High-Voltage Segment Output Pins
Also acts as the Key Source
14 to
29
VEE
-
Pull-Down Level
30
SG17/GR12 to SG24/GR5 O
High Voltage Segment/Grid Output Pins
31 to
38
GR4 to GR1
O
High-Voltage Grid Output Pins
39 to
42
PT6315 v2.0
Page 5
Sep. 2002