AVR-Chat

On Fri, Aug 29, 2008 at 1:47 AM, John Samperi
<samperi@ampertronics.com.au> wrote:
> At 09:30 AM 29/08/2008, you wrote:
>>What is the purpose of the prescalers on the system clock?
>
> Mainly to slow down the processor and save battery power.
>

I've used it to put the system into deep sleep, after shutting down
everything else I didn't absolutely need.
One thing to watch, if you make large changes in the clock speed,
you'll need a minimum of eight NOPs after the clock change since
that's the only instruction that is guaranteed to execute properly
after a big clock change.