说明：  MSP430G2553用户手册中文,MSP430 具有一种运行模式及5 种可利用软件来选择的低功耗操作模式。一个中断事件能够将器件从任一低功耗 模式唤醒、处理请求、并在接收到来自中断程序的返回信号时恢复至低功耗模式。
(MSP430G2553 User Manual Chinese, MSP430 has one mode of operation and the five kinds of software can be used to select a low-power operating mode. An interrupt event can be from any low-power device Mode wake, processing requests and receives a return to low-power mode when the return signal from the interrupt program.)