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CC2540睡眠中跑飞



我遇到一个问题,我的板子是用纽扣电池供电的,平时深度休眠,按键时工作大概一秒。一般没什么问题,但偶尔会出现死机的情况:32M晶振不起振,但电池电压会降低一点,说明CPU在耗电,外部中断也唤醒不了,只能通过卸电池重启,电源设计只在电池供电后加了简单LC滤波,没有加稳压芯片,这个会不会和供电不好有关呢?CPU是醒是睡,晶振为什么不工作,看门狗也不工作。