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VFD Driver/Controller IC PT6311
PT6311 v2.2 Page 1 June, 2002
DESCRIPTION
PT6311 is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/8 to 1/16 duty factor housed in
52-pin plastic QFP Package. Twelve segment output lines, 8 grid output lines, 8 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 PT6311
via a three-line serial interface.
FEATURES
• CMOS Technology
• Low Power Consumption
• Key Scanning (12 x 4 matrix)
• Multiple Display Modes: (12 segments, 16 digits to 20 segments, 8 digits)
• 8-Step Dimming Circuitry
• LED Ports Provided (5 channels, 20 mA 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
• Available in 52-pin QFP Package
APPLICATION
• Microcomputer Peripheral Device
