AVR-Chat

Some devices allow interrnal pullup to remain on in ADC
mode. Check that pullups, etc, are off on those pins.

Jim


On Sun, 3 Jun 2007 20:17:17 -0700 (PDT)
 A F <afaupell@yahoo.com> wrote:
> Im using the adc on a mega8 with a 5v LM4050 precision
> shunt as an external reference. I am able to read the
> full scale of 0 to 1023, the problem is that 0 is
> returned for any voltage under about 0.84v. Is this a
> limitation of the adc or am I doing something wrong?
> thanks
> 
> --Aaron
> 
> 
>        
>
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