基于快速单片机的LED屏显示控制器的设计及应用

The Designing and Applying of a LED Screen Display Controller Based on the MCU

设计了一种用于小型场合,内容不需要经常更新的LED屏控制器,解析了LED屏单元板的结构,分析了它的主要内部电路及单元板的输入输出接口,由单元板构建了一个LED屏,在对单元板接口信号分析的基础上设计了LED屏控制器。介绍了控制器硬件电路的组成,对关键信号进行了分析。分析了LED屏扫描显示方式,并据此选择了快速单片机,设计了控制器的显示驱动程序。实践证明,此控制器简单、实用、稳定性强,且扩展性强。

This essay designs a LED screen display controller which doesn＇t need updating regularly and can be used in small occasions.The structure of the LED panel as well as its main internal circuit is introduced,and the input-output interface of the panel is also analyzed.A screen is constructed using the panel.The LED screen display controller is designed through analyzing the signals of the panel interface.The hardware circuit of the controller is explained,and the key signals are analyzed.LED screen display mode is analyzed in detail,based on which the high-speed MCU is chosen.The display program is designed and implemented,which proves that the controller is user-friendly,practical,reliable and expandable.