> -----Original Message-----
> From: Mike Keitz [SMTP:mkeitz@JUNO.COM]
> Sent: Saturday, March 07, 1998 3:34 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Re: oscillator trouble
>  Using a very common 4.9152 MHz crystal, the PIC USART will work at
> all
> standard PC baud rates (up to 38,400) exactly, and with BRGH=0.  This
> is
> important because most of the PIC16C6Xs do not receive properly with
> BRGH=1.  It's best to forget the BRGH bit even exists, just leave it
> at
> 0.
>
> Also forget the tables in the data book, which don't even mention
> 4.9152
> MHz, and go by the formula.  With a BRGH=0, the divisor to load in the
> baud rate generator is:
>
>
>
        Thanks for the help Mike. I missed the multiple notes about the
BRGH mode bit.
        A case of not reading the data book properly when designing.


        Peter G.


>