Hello
Implementing an Hardware watchdog in my application and not getting the expected result. I am using the ADM8318WCY from Analog devices which has a typical reset timeout of 200ms, and a typical watchdog timeout of 1.6s
From the waveform above, the WDI pin is toggled every 360ms (YELLOW), and active high RESET output (pin 3) of the ADM8318WCY is high and remains high. I am not sure this is right, and I expect it to be High when there is no clock pulse after the watchdog timeout (1.6s) elapses. But what I have observed is that when clock pulses is stopped, this PIN still remains HIGH. I have used a pullup and pulldown resistor, but it just remains high (see below image).
I stopped toggling the PIN, and the RESET pin still remain high.
On the other hand the activeLow RESET output (Pin 1) remains LOW. So it does not appear it is responding to the toggling WDI pin.
Any thought of why this is so. Below is the implemented circuit.
