Datasheet

 2000-2013 Microchip Technology Inc. DS30569C-page 65
PIC16F870/871
TABLE 9-4: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 1)
BAUD
RATE
(K)
F
OSC = 20 MHz FOSC = 16 MHz FOSC = 10 MHz
KBAUD
%
ERROR
SPBRG
value
(decimal)
KBAUD
%
ERROR
SPBRG
value
(decimal)
KBAUD
%
ERROR
SPBRG
value
(decimal)
0.3---------
1.2---------
2.4 - - - - - - 2.441 1.71 255
9.6 9.615 0.16 129 9.615 0.16 103 9.615 0.16 64
19.2 19.231 0.16 64 19.231 0.16 51 19.531 1.72 31
28.8 29.070 0.94 42 29.412 2.13 33 28.409 1.36 21
33.6 33.784 0.55 36 33.333 0.79 29 32.895 2.10 18
57.6 59.524 3.34 20 58.824 2.13 16 56.818 1.36 10
HIGH 4.883 - 255 3.906 - 255 2.441 - 255
LOW 1250.000 - 0 1000.000 0 625.000 - 0
BAUD
RATE
(K)
F
OSC = 4 MHz FOSC = 3.6864 MHz
KBAUD
%
ERROR
SPBRG
value
(decimal) KBAUD
%
ERROR
SPBRG
value
(decimal)
0.3------
1.2 1.202 0.17 207 1.2 0 191
2.4 2.404 0.17 103 2.4 0 95
9.6 9.615 0.16 25 9.6 0 23
19.2 19.231 0.16 12 19.2 0 11
28.8 27.798 3.55 8 28.8 0 7
33.6 35.714 6.29 6 32.9 2.04 6
57.6 62.500 8.51 3 57.6 0 3
HIGH 0.977 - 255 0.9 - 255
LOW 250.000 - 0 230.4 - 0