LCD Column Driver for Dot Matrix Graphic Displays

  • Not Recommended for New Designs
  • This page contains information on a product that is not recommended for new designs.

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Product Details

Block Diagram

Block diagram: PCF8579HT, PCF8579T


System Features

  • LCD column driver
  • Used in conjunction with the PCF8578, this device forms part of a chip set capable of driving up to 40,960 dots
  • 40 column outputs
  • Selectable multiplex rates; 1:8, 1:16, 1:24 or 1:32
  • Externally selectable bias configuration, 5 or 6 levels
  • Easily cascadable for large applications (up to 32 devices)
  • 1280-bit RAM for display data storage
  • Display memory bank switching
  • Auto-incremented data loading across hardware subaddress boundaries (with PCF8578)
  • 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 PCF8578)
  • 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: PCF8579HT.


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