DESCRIPTION
PT6311B is a Vacuum Fluorescent Display (VFD)
Controller driven on a 1/8 to 1/16 duty factor housed in
52-pin plastic LQFP 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 PT6311B via a
three-line serial interface.

APPLICATION
• Microcomputer Peripheral Devices

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 Provide (5 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
• Available in 52 pins LQFP