| To: | |
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| Subject: | [ts-7000] Re: USB serial reset |
| From: | "Jesse Off" <> |
| Date: | Fri, 10 Jun 2005 18:07:51 -0000 |
--- In Andy Warner <> wrote:
> My money is still on a brownout.
I think you're right too. We see this a lot. The fuse on the USB
power is a poly-fuse which is a thermally activated device. It does
not take effect immediately when current exceeds capacity. Actually
it ranges from 10s of milliseconds to many seconds depending on how
much the circuit is over-current. The brown-out detector circuit
however will reset the board within microseconds of the 5V supply
dropping half a volt.
//Jesse Off
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