LCD Row/Column Driver for Dot Matrix Graphic Displays

  • This page contains information on a product that is no longer manufactured (discontinued). Specifications and information herein are available for historical reference only.

Product Details

Block Diagram

Block diagram: PCF8578HT, PCF8578T


System Features

  • Single chip LCD controller and driver
  • Stand-alone or may be used with up to 32 PCF8579s (40,960 dots possible)
  • 40 driver outputs, configurable for several ratios of rows/columns: 32/8, 24/16, 16/24 or 8/32
  • Selectable multiplex rates: 1:8, 1:16, 1:24 or 1:32
  • Externally selectable bias configuration, 5 or 6 levels
  • 1280-bit RAM for display data storage and scratch pad
  • Display memory bank switching
  • Auto-incremented data loading across hardware subaddress boundaries (with PCF8579)
  • Provides display synchronization for PCF8579
  • On-chip oscillator, requires only 1 external resistor
  • Power-On Reset (POR) blanks display
  • Logic voltage supply range 2.5 V to 6 V
  • Maximum LCD supply voltage 9 V
  • Low power consumption
  • I2C-bus interface
  • Compatible with most microcontrollers
  • Optimized pinning for single plane wiring in multiple device applications (with PCF8579)
  • Space saving 56-lead small outline package and 64 pin quad flat pack

Target Applications

  • Automotive information systems
  • Telecommunication systems
  • Point-of-sale terminals
  • Industrial computer terminals
  • Instrumentation

Part numbers include: PCF8578HT, PCF8578T.


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