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Message

Re: Problem reading PIND.0 on Mega16 with 16MHz Crystal

2006-02-08 by kernels_nz

Hi Tom, yup, have tried it with 3 different Mega16's, I actually
figured the first chip was faulty and labeled it as such by munching
it's pins and chucking it in the garbage, only to find the same thing
happen on 2 others (Gutted). Found that the problem was the CKOPT fuse
which I didnt burn, means the oscillator was running at only half VCC
as far as I can figure.

Cheers
Hein B
Auckland, New Zealand.

--- In AVR-Chat@yahoogroups.com, Thomas Keller <tkeller1@...> wrote:
>
> kernels_nz wrote:
> 
> >Another thing worth mentioning . . . I have noticed that PIND.0 is
> >also starting to load my input signal for no apparent reason after a
> >while of operation. The input signal is buffered, output swing is GND
> >to 5V. After a while of running with this signal connected to PIND.0,
> >the output swing measured with my scope droops to GND to approx 2.5V
> >  
> >
> 
>    Maybe a silly thought, but:  have you tried this with a different 
> chip?  This loading issue makes it sound to me as if perhaps your AVR 
> chip is damaged, particularly that something is wrong with the harware 
> associated with PIND.0.
> 
> tom
>

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