Vladimir Vassilevsky wrote:


Tim Wescott wrote:

Jim Thompson wrote:

When a uP or uC is exercising its POR cycle, what are the states of
the output pins? Floating, or held low, or what?

Particularly if it's recovering from a brown-out that caused POR to be
exerted.


That depends on the part.

I have yet to run across a chip with a pin designated as 'output' that
isn't low impedance all the time,

Tip: Open drain

Well, yes, but that'll be mentioned. Like you said: read the data sheet.

--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com