AVR-Chat

Thanks guys.  I will check on this tonight and post back if I still cant 
find anything.

Thanks again,

Bryan

----- Original Message ----- 
From: "David Kelly" <dkelly@hiwaay.net>
To: <AVR-Chat@yahoogroups.com>
Sent: Friday, March 10, 2006 12:57 PM
Subject: Re: [AVR-Chat] RF communications


> 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
> ========================================================================
> Whom computers would destroy, they must first drive mad.
>
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