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[SI-LIST] Re: Strange resets happening in one of our circuit boards
- From: Eric Goodill <ericg@xxxxxxxxxxx>
- To: SI-List <si-list@xxxxxxxxxxxxx>
- Date: Fri, 02 Jun 2006 14:16:49 -0700
Even though reset durations may be long, you still need to bring
everybody out of reset in a timely fashion. Otherwise some parts of your
circuit may be running and some still in reset. If your circuits are not
tolerant of that, then you could wind up with problems. I've seen it
happen. Thus the asserting edge of reset might be slow, but the negating
edge may need to be faster.
-Eric
Nima Lotfi wrote:
> As a general rule you do want to have a capacitor on all reset signals.
> This will increase the immunity of the circuit to any transients.=20
>
> Resets are generally long events, and you don't generally care if you
> slow down the edge.
>
> As for the chair ESD, we solve that problem by putting electrostatic
> spray on the chairs to make the seats and back cushion conductive...
> hence no/reduced electrostatic charge is built.
>
> Nima
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