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MSP430F5438A 程序跑飞/死机

Other Parts Discussed in Thread: MSP430F5438A

各位专家,目前遇到如下问题:

板子连接薄膜按键,如果不按键,貌似一切正常。死机/跑飞,出现在按键时,但不是每次按键都会死机,按哪一个键也不一定。

疑问1:MSP430F5438A 跑飞是,是否中断正常?在时钟的中断程序中,增加硬件看门狗驱动,比如1每种。如果程序跑飞,但中断正常响应,则看门狗无法起到重启的作用。

疑问2:怀疑是按键的静电导致,但是已经在每个按键的输入端,增加了ESD,难道要在距离单片机的IO口最近的地方增加ESD?