AVR-Chat

On Wed, 31 Aug 2005 18:34:49 -0000 you wrote:

>--- In AVR-Chat@yahoogroups.com, Thomas Keller <tkeller1@n...> wrote:
>> > Ummm - a low voltage (0v) is a logic zero. A high voltage (5v) is a
>> > logic one.
>> 
>> Not according to AVR data sheets, it's not.
>
>Every AVR datasheet that I've seen describes a positive logic system 
>for the I/O pins where the most positive voltage is a logic one.  What 
>datasheet are you looking at?
>
>Don

Possibly the confusion arises from a section on fuse bits where the logic is inverted,
i.e. set=0.
--
Ralph Hilton
http://www.ralphhilton.org
C-Meter: http://www.cmeter.org
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