Question: A watchdog timer (Fig. 2.20 ) is used for supervising the operation of an embedded system in a high - EMI environment. Why is it

A watchdog timer (Fig. 2.20 ) is used for supervising the operation of an embedded system in a high - EMI environment. Why is it practical to connect the watchdog - circuit ’ s output to the CPU ’ s nonmaskable (instead of maskable) interrupt input?

Figure 2.20

Clear Clock To Interrupt or Watchdog Timer System Reset Up-Counter

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