液晶模块的接口扩展  

Interface Expand of Liquid Crystal Module

作　　者：黎定国[1] 潘仕彬[1] 何为民[1] 

机构地区：[1]东华理工学院,江西省抚州市344000

出　　处：《电子工程师》2005年第7期27-29,32,共4页Electronic Engineer

摘　　要：具有串行接口的外围器件使用时可简化系统结构,增加应用的灵活性。而大多数液晶模块一般采用并行数据总线接口,占用主控制器的I/O端口较多。文中以LCM320240ZK液晶模块为例,采用P89LPC932A1单片机对其进行控制,把它扩展成具有UART、I2C、SPI这3种串口的接口方式,从而使液晶器件的应用更加灵活、方便。It can simplify system structure and be convenient for application by using peripheral with serial interface. But a mass of LCM always adopt parallel data bus interface, so the master controller must have many I/O ports to connect it. In this paper, the interface of LCM320240ZK is expanded into UART, I^2C and SPI serial ports, with P89LPC932A1 microcontroller to control it. So the LCM device can be more flexible and convenient to be used.

关 键 词：P89LPC932A1 LCM320240ZK UART串口 I^2C总线 SPI串口 

分 类 号：TN873.93[电子电信—信息与通信工程]