
PIC16F870/871
DS30569B-page 64
2003 Microchip Technology Inc.
TABLE 9-3:
BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0)
BAUD
RATE
(K)
FOSC = 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)
FOSC = 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
HIGH
0.244
-
255
0.225
-
255
LOW
62.500
-
0
57.6
-
0