AVR-Chat

On Fri, Mar 10, 2006 at 11:43:14AM -0500, Jim Wagner wrote:
> I'd bet that something on the board driven by the micro is
> trying to pull higher than 5V. Like a pullup resistor
> connected to +12. When the micro output is high, it cannot
> handle current in that "wrong" direction. It expects
> current flow to ground. If its going the other way, it will
> fail to operate properly.'

There is a pullup protection diode on the AVR ports. 5.8 is about what
one would see if its being over-voltaged from an external source. In
this case, the RF board.

-- 
David Kelly N4HHE, dkelly@HiWAAY.net
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Whom computers would destroy, they must first drive mad.