TPS3824-Q1: Watchdog Timing Question

PY (Pengyu) Song

Expert 5860 points

Part Number: TPS3824-Q1

Hi team,

how long does it take from /RESET rising edge to where the WDI edge can be treated valid? i.e., the "blank out" period.

Please refer to below image -

over 4 years ago

0 Michael_DeSando over 4 years ago

TI__Genius 12630 points

PengYu,

There is no blank out period. As soon as /RESET deactivates to logic high, the watchdog is reinitialized. Please be sure to maintain a WDI pulse width of at least 100ns if pulsing WDI right after /RESET comes up. This will ensure the WDI signal is detected.

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TPS3824-Q1: Watchdog Timing Question