also be aware of the eerata for this chip and the The EUSART asynchronous operation has a
probability of 1 in 256 of missing the Start bit
edge for all combinations of BRGH and BRG16
values, other than BRGH = 1, BRG16 = 1.

All silicon prior to A5

http://ww1.microchip.com/downloads/e...Doc/80498F.pdf