PT6315 VFD Driver/Controller IC DESCRIPTION PT6315 is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/4 to 1/12 duty factor. Sixteen segment output lines, 4 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 PT6315 via a three-line serial interface. It is housed in a 44-pin LQFP. APPLICATION FEATURES CMOS Technology Low Power Consumption Key Scanning (16 x 2 matrix) Multiple Display Modes: (16 segments, 12 digits to 24 segments, 4 digits) 8-Step Dimming Circuitry LED Ports Provide (4 channels, 20mA max.) Serial Interface for Clock, Data Input, Data Output, Strobe Pins No External Resistors Needed for Driver Outputs Available in 44-pin LQFP Microcomputer Peripheral Devices BLOCK DIAGRAM Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan PT6315 APPLICATION CIRCUIT Notes: (Purpose: To reduce power noise) 1. The capacitor (0.1µF) connected between the GND and the VDD pins must be located as close as possible to the PT6315 chip. 2. The capacitor (0.1μF) connected between the VEE and the VDD pins must be located as close as possible of the PT6315 chip. 3. Noise solution adds additional 1KΩ to avoid noise interruption at input pin. V3.4 2 November 2013 PT6315 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw V3.4 17 November 2013