基于 ARM 的TFT-LCD显示系统设计

摘要

With the development of the information technology,LCD has gradually developed into important graphical interface equip-ment.According to the application requirement of human-computer interaction interface of many devices,introduced a display system of true-color TFT-LCD controlled by embedded microcontroller processor ARM9.Introduced the main characteristics of ARM S3C2440and basic methods of LCD module WXCAT35,showed the connection method between the S3C2440LCD controller and WXCAT35LCD panel. And detailed analysis of the WXCAT35 work timing,ensured VCLK、HSF、VSF,and introduced LCD controller structure,allocation methods of LCD Control register,and correlation function.Bitmap display testing shows that the design of software and hardware meet the requirement,the ARM-controlled liquid crystal display(LCD)system is realized perfectly.%随着信息技术的不断发展，LCD已逐渐发展成为重要的图形界面设备；针对目前许多设备对人机交互界面的应用需求，给出了一种嵌入式微处理器 ARM9控制的，基于真彩色 TFT 型的 LCD 液晶显示系统；重点介绍了 ARM 芯片 S3C2440的主要特点和 WX-CAT35液晶显示模块的基本使用方法，给出了S3C2440的 LCD控制器与液晶显示模块的连接方法；并详细的分析 WXCAT35的工作时序，确定像素时钟 VCLK、行频 HSF、场频 VSF，以及介绍 LCD控制器的结构，LCD 控制寄存器的配置方法以及相关函数；经位图显示测试，所设计的软硬件符合要求，实现了 ARM 控制的液晶显示系统。