AVR-Chat

> On Wed, 2005-10-05 at 17:43 +0100, David Collier wrote:
> > If I run this chip off a 32KHz XTAL.. does it multiply up 
internally, 
> > or does it actually RUN at 32KHz???
> 
>   AVR microprocessors do not contain PLLs in their clock circuitry.
> They run at whatever frequency the clock is running at, unless you
> choose to divide that frequency in those chips which support clock
> division (which I believe includes the entire line of AVR chips).
 
So running the CPU on a watch XTAL gives you a pretty slow computer - I 
assume you can run on the internal osc, and use the 32KHz as a timing 
reference to trim it then?

David