AVR-Chat

On Wed, 11 Jan 2006, John Samperi wrote:

> At 01:25 PM 11/01/2006, you wrote:
> >   Quite simple:  I have potential applicaitonsd whre a 20 Mhz processor
> >simply isn't fast enough.
> 
> Is it a hardware or software limitation? Can you rewrite part
> (or all??) of the application in assembler perhaps? I understand
> the case of a PWM scenario where you could be limited by the
> PWM frequency. In other words I would NOT consider over clocking
> a processor in a production unit, but that's just me, I like
> things to run WELL within their specs.
> 
> Regards
> 
> John Samperi
> 

I have been playing around with the direct digital synthesis project on 
Jesper's AVR page:

http://www.myplace.nu/avr/minidds/index.htm

If you want an output of more than a few hundred kHz, you either need to 
overclock the AVR, use frequency multiplication, or find something faster 
(if it exists). 

Zack