基于32位微处理器的液晶显示系统设计与实现

Design and Realization of LCD Display System Based on 32-bit Microprocessor

提出了一种基于摩托罗拉32位微处理器MC683332的液晶显示系统设计方法。首先介绍了图形液晶显示控制器SED1353及其接口原理,设计了MC68332、SED1353和LM64P83L之间的接口电路,对系统的I/O地址空间、硬件环境进行了有效配置。最后以该系统控制大规模点阵液晶显示屏LM64P83L为例,阐述了系统的初始化及汉字显示的程序设计思想,给出了程序清单。该方案对解决32位嵌入式微处理器应用中显示带宽不足的问题提供了一种有效方法,具有良好的应用前景。

A design method of the hardware and software of LCD display system based on Motorola 32-bit MC68332 microprocessor is brought forward in this thesis. SED1353,a dot matrix graphics LCD controller,as well as it＇s interface principle are introduced. The interface circuit among MC68332, SED1353 and LM64P83L has been designed. Address space and hardware environment of the system have been configured availabily. The programming thought of system initialization and kanji display are discribed with the application of the large scale dot matrix LCD, LM64P83L, which is controlled by the SED1353. Relevant source programs are listed. The scheme provides a effective method to solve deficient bandwidth of display in the application of 32-bit embedded miroprocessor, so it has a good foreground for application.