If lower power operation is the ultimate goal, a slower clock rate is
advantageous anyway, assuming you have idle cycles at 12Mhz.  How slow
can you go before your application suffers?  Instead of pushing the
boundaries of operation at 12MHz, perhaps you should be examining your
app to see if you can run slower than 6Mhz.  (Assuming of course you
change the baud rate divisor)

-n.

On Mon, Mar 10, 2008 at 2:47 AM, Alan B. Pearce <A.B.Pearce@rl.ac.uk> wrote:
> >Our alternative is to run at 3.3, but a 6 MHZ which slows down the '57,
>  >cuts the baud rate to 4800, and otherwise should have minimal effects.
>
>  Is it really not possible to patch the code to change the baud rate divisor
>  back to 9600B ? You wouldn't even need the source code, a quick run through
>  a disassembler would find the constants to patch.
>
>
>
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