Tool/software:
Hi Teams,
Please kindly help to review the sch. And help to check the below questions.
1, We are expecting to have 132ms upper threshold (pic1) with 1nf CWD & CRST 4.7nF. But found the WDO reset asserted when at 20ms period and 60ms period, but 40ms is ok. So it seems that the real window is about this in the pic2. (it's strange, we are connecting CAPs in the CWD & CRST. and not using factory programed thresholds.)
2, Another very interesting phenomenon is when we change the CRST from 4.7nf to 1nf, then the threshold meets our expectation just like the pic1.
Please review the sch and phenomenon and kindly help to provide your comments.
BRs,
Marsh
