Programming for setup and control is accomplished using a 3-bit SPI-compatible serial interface.

设置与控制的编程利用3位SPI兼容串行接口来完成。

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Serial asynchronous communication can be realized through universal I/O interface. The simple connection and considerate programming aim at various SCM application systems.

提出了一种利用通用I/O口实现串行异步通讯的方法，该方法接口简单，程序实现方便，特别适合各种单片机应用系统。

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And its hardware circuit and software programming are simple and convenient, so it can economize program code space and CPU running time. It is a sort of standard of serial bus interface used widely.

其硬件电路及软件编程简单、方便，可节省程序代码空间和CPU运行时间，是一种使用广泛的串行总线接口标准。

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