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PT6324

Product catalog summary

Description
PT6324 is a Vacuum Fluorescent Display (VFD) Controller IC designed for use with microcomputers. It supports a 1/8 to 1/16 duty factor and is housed in a 52-pin plastic QFP. The IC integrates 24 segment output lines, 16 grid output lines, a display memory, control circuit, and key scan circuit, making it a reliable peripheral device. Data is transmitted to the PT6324 via a three-line serial interface.

Features

CMOS technology with low power consumption.
Wide operating voltage range from 2.7V to 5.5V.
Key scanning capability for a 16 x 2 matrix.
Supports display modes from 24 segments, 8 digits to 24 segments, 16 digits.
Includes 8-step dimming circuitry.
Serial interface includes Clock, Data Input, Data Output, and Strobe pins.
No external resistors required for driver outputs.
Available in a 52-pin QFP package.

Applications

Microcomputer peripheral devices.
Digital Audio/Video systems such as CD, MD, VCD, and DVD players.
Car audio systems.
VCRs.
Electric scale meters.
Point of Sale (P.O.S.) systems.
Electronic equipment with instructional displays.

Pin Configuration
The document provides a detailed pin configuration for the PT6324, listing the functions of each pin in the 52-pin QFP package.

Application Circuit
The document includes a schematic for a 16-grid x 24-segment VFD application circuit, detailing the connections and components required, such as resistors, diodes, and capacitors.

Notes

The value of Rosc depends on the supply voltage VDD of the PT6324 IC chip.
Zener diodes Z1 and Z2 are specified at 5.1V.
A current amplifying circuit is recommended for high brightness issues when IOHGR exceeds 15mA on the VFD panel.

Order Information
The PT6324 is available in a 52-pin QFP package, with options for lead-free versions indicated by specific markings.

Catalog excerpts

Princeton Technology Corp. PT6324 is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/8 to 1/16 duty factor housed in 52-pin plastic QFP. 24 segment output lines, 16 grid output 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 PT6324 via a three-line serial interface. • CMOS technology • Wide operating voltage VDD=2.7V~5.5V • Display modes: (24 segments, 8 digits to 24 segments, 16 digits) • Serial interface for Clock, Data Input, Data Output, Strobe pins • No external resistors needed for driver outputs • Microcomputer peripheral devices • Digital Audio/Video system: CD/MD/VCD/DVD players • Electric scale meter • Electronic equipment with instructional display

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Princeton Technology Corp. Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw

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Notes: 1. The value of Rosc is depend on PT6324 IC chip supply voltage of VDD (Rosc=82KΩ, when VDD=5V; Rosc=100KΩ, when VDD=3.3V). 2. Z1, Z2=Zener diode 5.1V 3. Please adding the current amplifying circuit as following figure when IOHGR>15mA on VFD panel for high brightness issue. P T 6 32 4 *=C.A. Circuit=Current amplifying circuit C.A. Circuit-1 & C.A. Circuit-2 Ex.: VDD Parts recommended: • Q=SAMSUNG-KSR1105 (General fast switching transistor) • D=HITACHI-HSM221C (General fast recovery diode)

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