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ADM8614 Watchdog Timeout error

Hi Support team

I am evaluating the ADM8614 with the schematic below.

The watchdog timeout should be 100 seconds, but sometimes it was set to 25 seconds.

It occurs with a probability of about 20 to 30%.

Why is this? Is there a constraint to the rise time of VCC?

The rising waveform is shown in the figure below(yellow is Vcc. Green is WDT_SEL).

Please let me know if there are any other reason that cause this phenomenon.

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