At 12:14 PM 5/13/2005, Bob Blick wrote:
> > In the datasheet of 18F2455 we have
> > Table 20-3 Baud Rates For Aynchronous Modes (USART module)
> > (I guess other pics would have the same thing as well)
> > The errors seem to range from 0.16% up to -45.75%. Are all these
> > values valid, or should I be aiming at a certain percentage, I am
> > confused?
>
>Usually if I am designing something using the usart, I choose a crystal
>frequency that divides well. For the 16-series PICs and PC baud rates,
>19.6608 MHz is readily available.
>
>For the 18 series with PLL, you will need to choose something 10MHz or less.

Yup. When using uarts to talk to other standard devices, it's best to 
use a baud rate multiple crystal.
Then the error is zero, and you don't have to worry.

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