AVR-Chat

Hi, Mark

> > You need to connect AVCC (always!), you need to supply an external
> > reference, or use VCC for ratiometric measurements (the internal
reference
> > is pretty dodgy), you need to supply a cap on the ref pin.
>
> Does the same apply to the ATMEGA8 ADC? I have used the internal
> reference without problems.

    Could you post the schematic and program snippet that you used ? When I
tried to use the ADC it seemed to be very bad. I probably made something
quite wrong but did not have the time and incentive ($$) to find out what it
was...

> > Yes, it is successive approximation, at something like 200 kHz.
>
> You can go up to 1MHz if you only need 8 bit precision.

    That makes it even more interesting.... Have you used it at that speed
and got real 8 bit's precision ???

Best regards,
Alexandre Guimaraes ( Avr ADC frustated user :-) )