(PLLs), Clock Recovery, Reference Signal Trakcing,
and Synthesizers
Frequencies up to 160 MHz
Tri-state Option Available
Pin Connections
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看门狗 定时器 (WDT,Watch Dog Ti mer)是单片机的一个组成部分,它实际上是一个计数器,一般来说都是向下计数的,给看门狗一个数字,程序开始运行后看门狗开始倒计数。如果程序运行正常,过一段时间 CPU 应发出指令让看门狗复位(在计数器减到0之前),重新开始倒计数。如果看门狗减到0就认为程序没有正常工作,强制整个系统复位。本节将对看门狗定时器的 工作原理 和作用进行详细讲解。 看门...[详细]