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VFD Driver/Controller IC
PT6312
DESCRIPTION
PT6312 is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/4 to 1/11 duty factor. Eleven
segment output lines, 6 grid output lines, 5 segment/grid output drive lines, one display memory,
control circuit, key scan circuit are all incorporated into a single chip to build a highly reliable peripheral
device for a single chip micro computer. Serial data is fed to PT6312 via a three-line serial interface. It
is housed in a 44-pin plastic LQFP Package and is functionally compatible with µpD16312.
FEATURES
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CMOS technology
Low power consumption
Key scanning (6 x 4 matrix)
Multiple display modes: (11 segments, 11 digits to 16 segments, 6 digits)
8-Step dimming circuitry
LED ports provided (4 channels, 20mA max.)
4- Bits general purpose input ports provided
Serial interface for Clock, Data Input, Data Output, Strobe pins
No external resistors needed for driver outputs
Functional compatibility with µpD16312
Available in 44-pin, LQFP package
APPLICATION
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Microcomputer peripheral devices
PT6312 V2.6
-1-
December, 2005