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What does Software Watchdog & Hardware Watchdog means in the K series?

Question asked by Nam Son Tran on Sep 9, 2014
Latest reply on Sep 12, 2014 by Nam Son Tran

Dear community members,

I'm working with the Kinetis K series Product Update Report (KPUR). There are two kinds of watchdog is written : Software Watchdog and Hardware Watchdog.

However when I check out the Reference Manual such as MK70FX512VMJ15, There are two kinds of watchdog in different name : External watchdog monitor (EWM) and Software watchdog (WDOG).
I consider External watchdog monitor (EWM) is the Hardware Watchdog which is written in KPUR but I'm confuse if it was correct or not.

Does anyone give me a lecture to clearly understand about this?
Thank you!