摘要
介绍市场上第一款内嵌铁电存储器的高性能8051单片机VRS51L3074,重点分析该单片机SPI模块的CS3扩展功能,说明了LED显示屏的工作原理,设计了基于VRS51L3074的LED显示屏控制系统,对输出电路进行了优化。实现了显示数据以"直接存储器访问(DMA)"方式输出。
RS51L3074 is introduced,which is the first embedded ferroelectrie memory and high-performance 8051 microcontroller in market. The CS3 extended function of the SPI module in MCU is emphatically analyzed. Principle of LED display panel is explained briefly. At last, a controlling system based on VRS51L3074 is presented, the output circuit is optimized, and the ＂Direct Memory Access （DMA）＂ output mode of display data is realized.
出处
《电视技术》
北大核心
2008年第9期27-30,共4页
Video Engineering
