NXP PCF85132低速率LCD驱动方案

NXP 公司的PCF85132是低速率LCD驱动器，能产生驱动任何静态或低速LCD（包含四个屏面和160段）的信号，和大多数微出版业器或MCU兼容，采用两线双向I2C总线通信，显示数据存储器器160x4位RAM，电源电压1.8V-5.5V，LCD和逻辑控制电源可单独使用。本文介绍了PCF85132主要特性和优势，方框图，两个PCF85132级联配置图以及一个PCF85132和一个PCF85133级联配置图。

PCF85132：LCD driver for low multiplex rates

The PCF85132 is a peripheral device which interfaces to almost any Liquid Crystal Display (LCD) with low multiplex rates. It generates the drive signals for any static or multiplexed LCD containing up to four backplanes and up to 160 segments. It can be easily cascaded for larger LCD applications. The PCF85132 is compatible with most microprocessors or microcontrollers and communicates via a two-line bidirectional I2C-bus. Communication overheads are minimized by a display RAM with auto-incremented addressing, by hardware subaddressing, and by display memory switching (static and duplex drive modes).

PCF85132主要特性和优势：

Single-chip LCD controller and driver for up to 640 elements

Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing

160 segment drives:

Up to eighty 7-segment numeric characters

Up to forty 14-segment alphanumeric characters
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