一种新型基于51单片机的触摸彩屏设计

A New Type of Touch Screen Based on 51 Series MCU

基于51单片机提出了一套触摸彩色显示屏的控制驱动方案,实现了一体化的人机交互.硬件上采用I/O扩展方式,以8位I/O实现16位并行数据传输,节省I/O口.软件上采用局部分区域操作,只对需要更新显示信息的区域所对应的内部RAM进行数据操作,而对于其它区域不进行任何操作,以此节约处理时间,进一步提高数据更新速率,有效解决屏幕刷新速度慢以及数据更新时屏幕闪烁的问题.

This paper presents a touch of color display control drive scheme based on 51 series MCU,to achieve the integration of the human-computer interaction.The hardware of the system adopts I/O expansion mode,8 bits I/O implementation of a 16 bit parallel data transmission,the realization of saving I/O.The software takes local regional operation,which only needs to update the display corresponding information in areas of the internal RAM data manipulation,with no reed of operation in othen areas,which saves processing time,improves the data update rate,and effectively solve the slow screen refresh rate and flicker problem.