智能电表段式液晶驱动的设计与实现

Design and implementation of segment liquid crystal drive in the intelligent meters

首先阐述段式液晶屏的驱动原理,然后介绍利用MSP430F149单片机的管脚直接对多路寻址液晶显示器件驱动的硬件原理和程序,实现了无专用驱动芯片的液晶显示,减少了带段式液晶产品驱动芯片的费用。本设计驱动电路性能稳定、成本低廉,是理想的人机界面实现方式。

The principle of segmem LCD driver is expounded, then introduces the driver＇s hardware principle and the procedure of multiple addressing liquid crystal display which is driven by the MSP430F149 microcontroller pins directly. It also realizes the display of LCD without special driver chip, and reduces the cost of products with segment liquid crystal of driver chip. The design of the driver circuit is stable and low-cost, which is an ideal way of realizing human-computer interface.