目前,单片机的应用已经遍及几乎所有的领域。在单片机应用中,在许多特殊场合,如野外、无人值守的监测站、井下、空中等,单片机系统往往只能采用电池供电。因此,如何最大限度地降低系统的功耗成了人们十分关注的问题。在多数情况下,单片机并不需要连续工作,往往有一定的时间间隔 Currently, the application of SCM has been in almost all areas. In the SCM applications, in many special occasions, such as the field, unattended monitoring stations, downhole, air, etc., SCM systems often only use battery power. Therefore, how to minimize the power consumption of the system has become a very concerned issue. In most cases, the microcontroller does not need to work continuously, often with a certain time interval