On Wed, 18 Apr 2007 16:19:46 +0200, you wrote:

>On 4/18/07, Jinx <joecolquitt@clear.net.nz> wrote:
>
>> If you want it simple, the 2.4576 would do fine for 8-bit timer IRQs
>
>Hm, I'm not sure i'm following you. I have a 32768 Hz-crystal that I
>use as interrupt-clock.
>
>Are you saying that I should replace it with the 2.4576? It's the main
>PIC-clock I'm trying to find a suitable value for. Sorry if I was
>unclear.

If you already have the 32K xtal for timing, then there would be no need to use an other xtal unless
other functions  ( e.g. RS232, beeps etc.)  needed accurate timing on shorter timescales ( and even
then you could in principle calibrate the RC against the 32k xtal)
The RC osc would be fine in this case. 

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