单片机不具有SPI或相同能力的接口，为了便于与TLC2543接口，采用软件合成SPI操作，本文给出了用单片机HSO口模拟SPI接口时序的方法，对程序稍加改动就可适用于其它带SPI接口的器件.附加有c语言程序-SCM is not the same capacity or SPI interface, in order to facilitate and TLC2543 interface, using software synthesizer SPI operation, this paper,