NXP PCA85133通用LCD驱动方案
NXP 公司的PCA85133是单片LCD控制器和驱除器,低复接速率的通用LCD驱动器,能产生任何静态驱动信号,或复接多达4个背板或多达80段的LCD,并很容易级联以适应更大LCD应用. PCA85133可选择的帧频率为82Hz或110Hz,工作电压从1.8 V 到5.5 V,400 kHz I2C总线接口.本文介绍PCA85133主要特性,方框图, 典型系统配置和级联PCA85133配置图.
PCA85133: Universal LCD driver for low multiplex rates
The PCA85133 is a peripheral device which interfaces to almost any Liquid Crystal Display (LCD)1 with low multiplex rates. It generates the drive signals for any static or multiplexed LCD containing up to four backplanes and up to 80 segments and can easily be cascaded for larger LCD applications. The PCA85133 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-incremental addressing, by hardware subaddressing, and by display memory switching (static and duplex drive modes).
AEC-Q100 compliant for automotive applications.
PCA85133主要特性:
Single-chip LCD controller and driver
Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
Selectable display bias configuration: static, 1¤2, or 1¤3
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