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Need a watchdog for improved system fault tolerance?

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re: Need a watchdog for improved system fault tolerance?
pekon_   3/21/2011 6:57:24 PM
nice article.. summarizing all details while designing WDT. However one thing to mention, RC osc are very inaccurate, and their freq variation is large. so 1) it would be difficult for running software to keep a sync of WDT refresh window. 2) the actual timeout period of WDT can vary alot depending of RC freq shift. with regards, pekon

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