采用硬、軟件結(jié)合的看門狗（watchdog）技術(shù)抑制尖峰脈沖的影響。軟件：在定時(shí)器定時(shí)到之前，CPU訪問(wèn)一次定時(shí)器，讓定時(shí)器重新開始計(jì)時(shí)，正常程序運(yùn)行，該定時(shí)器不會(huì)產(chǎn)生溢出脈沖，watchdog也就