摘要
针对OLED模块应用中8位数据并行接口占用单片机I/O管脚较多的问题,本文介绍了SPI总线接口在OLED模块中的应用,并以VGG12864L-S002显示模块为例,进行了相应的硬件、软件设计。在实际应用中,采用SPI方式达到了并行接口方式的效果,同时简化了电路设计,节约了I/O管脚。
To resolve the problem that 8-bit data parallel interface ties up much more I/O pins of microcomputer during the application of OLED module, this paper introduces the application of SPI, and do some correlative design of hardware and software with VGG12864L-S002. In actual application, it shows that the SPI mode comes to the effect of parallel interface predigesting the design of circuit and saving the I/O pins.
出处
《现代显示》
2009年第8期39-42,64,共5页
Advanced Display
