PCF8579HT/1
PCF8579 系列 6 V LCD列驱动器 用于点阵图形显示器 - TQFP-64
Overview
The PCF8579 is a low power CMOS LCD column driver, designed to drive dot matrix graphic displays at multiplex rates of 1:8, 1:16, 1:24 or 1:32. The device has 40 outputs and can drive 32 x 40 dots in a 32 row multiplexed LCD. Up to 16 PCF8579 can be cascaded and up to 32 devices may be used on the same I²C-bus using the two slave addresses. The device is optimized for use with the PCF8578 LCD row/column driver. Together these devices form a general purpose LCD dot matrix driver chip set, capable of driving displays of up to 40960 dots. The PCF8579 is compatible with most microcontrollers and communicates via a two-line bidirectional bus I²C-bus. To allow partial VDD shutdown the ESD protection system of the SCL and SDA pins does not use a diode connected to VDD. Communication overhead is minimized by a display RAM with auto-incremented addressing and display bank switching.
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## Features
* LCD column driver
* Used in conjunction with the PCF8578, this device forms part of a chip set capable of driving up to 40960 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
## Features