Datasheet

PIC16F870/871
DS30569C-page 64  2000-2013 Microchip Technology Inc.
TABLE 9-3: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0)
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 1.221 1.75 255 1.202 0.17 207 1.202 0.17 129
2.4 2.404 0.17 129 2.404 0.17 103 2.404 0.17 64
9.6 9.766 1.73 31 9.615 0.16 25 9.766 1.73 15
19.2 19.531 1.72 15 19.231 0.16 12 19.531 1.72 7
28.8 31.250 8.51 9 27.778 3.55 8 31.250 8.51 4
33.6 34.722 3.34 8 35.714 6.29 6 31.250 6.99 4
57.6 62.500 8.51 4 62.500 8.51 3 52.083 9.58 2
HIGH 1.221 - 255 0.977 - 255 0.610 - 255
LOW 312.500 - 0 250.000 - 0 156.250 - 0
BAUD
RATE
(K)
F
OSC = 4 MHz FOSC = 3.6864 MHz
KBAUD
%
ERROR
SPBRG
value
(decimal) KBAUD
%
ERROR
SPBRG
value
(decimal)
0.3 0.300 0 207 0.3 0 191
1.2 1.202 0.17 51 1.2 0 47
2.4 2.404 0.17 25 2.4 0 23
9.6 8.929 6.99 6 9.6 0 5
19.2 20.833 8.51 2 19.2 0 2
28.8 31.250 8.51 1 28.8 0 1
33.6 - - - - - -
57.6 62.500 8.51 0 57.6 0 0
HIGH 0.244 - 255 0.225 - 255
LOW 62.500 - 0 57.6 - 0