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, the SCM HSO SPI interface timing simulation methods little change in the procedure can be applied to other SPI interface with the device. Additional language program is c