PIC18F2220/2320/4220/4320
TABLE 18-5: BAUD RATES FOR SYNCHRONOUS MODE (SYNC = 1)
FOSC = 40.000 MHz
SPBRG
FOSC = 20.000 MHz
SPBRG
FOSC = 16.000 MHz
SPBRG
FOSC = 10.000 MHz
BAUD
RATE
(K)
Actual
Rate
(K)
SPBRG
value
Actual
%
Actual
%
Actual
%
%
value
value
value
Rate (K) Error
Rate (K) Error
Rate (K) Error
Error
(decimal)
(decimal)
(decimal)
(decimal)
9.6
—
—
—
—
—
—
—
255
129
86
64
51
19
16
9
15.63
19.23
62.76
0.16
0.16
0.64
0.16
-0.79
0.00
2.56
0.00
6.67
0.00
6.67
255
207
103
68
51
41
15
12
7
9.77
19.23
38.46
58.14
75.76
96.15
250.00
312.50
500.00
625.00
1.73
0.16
0.16
0.94
-1.36
0.16
0.00
4.17
0.00
0.00
255
129
64
42
32
25
9
19.2
—
—
19.53
1.73
0.16
-0.22
0.16
0.16
0.00
-1.96
0.00
0.00
0.00
0.00
38.4
39.06
57.47
76.92
96.15
250.00
303.03
500.00
625.00
1.73
-0.22
0.16
0.16
0.00
1.01
0.00
0.00
0.00
0.00
255
173
129
103
39
32
19
15
9
38.46
38.46
57.6
57.47
57.97
76.8
76.92
76.92
96.0
96.15
95.24
250.0
300.0
500.0
625.0
250.00
294.12
500.00
625.00
1000.00
1250.00
250.00
307.69
500.00
666.67
1000.00
1333.33
7
4
7
5
3
1000.0 1000.00
1250.0 1250.00
4
3
833.33 -16.67
1250.00 0.00
2
7
3
2
1
FOSC = 8.000000 MHz
SPBRG
FOSC = 7.159090 MHz
SPBRG
FOSC = 5.068800 MHz
SPBRG
FOSC = 4.000 MHz
SPBRG
BAUD
RATE
(K)
Actual
%
Actual
%
Actual
%
Actual
%
value
value
value
value
Rate (K) Error
Rate (K) Error
Rate (K) Error
Rate (K) Error
(decimal)
(decimal)
(decimal)
(decimal)
2.4
9.6
7.81
9.62
225.52
0.16
0.16
0.16
-0.79
0.16
-0.79
0.00
-4.76
0.00
6.67
0.00
—
255
207
103
51
34
25
20
7
6.99
9.62
191.30
0.23
255
185
92
46
30
22
18
6
4.95
9.60
106.25
0.00
0.00
0.00
0.00
-2.94
1.54
1.38
5.60
-15.52
1.38
—
255
131
65
32
21
16
12
4
3.91
9.62
62.76
0.16
0.16
0.16
2.12
0.16
4.17
0.00
11.11
0.00
—
255
103
51
25
16
12
9
19.2
38.4
57.6
76.8
96.0
250.0
300.0
500.0
625.0
19.23
38.46
57.14
76.92
95.24
250.00
285.71
500.00
666.67
19.24
0.23
19.20
38.40
57.60
74.54
97.48
253.44
316.80
422.40
633.60
—
19.23
38.46
58.82
76.92
100.00
250.00
333.33
500.00
—
38.08
-0.83
0.23
57.73
77.82
1.32
94.20
-1.88
2.27
255.68
298.30
447.44
596.59
894.89
1789.77
3
6
-0.57
-10.51
-4.55
-10.51
43.18
5
3
2
3
3
2
1
2
2
1
—
0
1000.0 1000.00
1
1
—
0
1000.00
—
0.00
—
1250.0
—
—
0
1267.20
1.38
—
FOSC = 3.579545 MHz
SPBRG
FOSC = 2.000000 MHz
SPBRG
FOSC = 1.000000 MHz
SPBRG
FOSC = 0.032768 MHz
SPBRG
BAUD
RATE
(K)
Actual
%
Actual
%
Actual
%
Actual
%
value
value
value
value
Rate (K) Error
Rate (K) Error
Rate (K) Error
Rate (K) Error
(decimal)
(decimal)
(decimal)
(decimal)
0.3
1.2
—
—
—
—
255
92
46
22
15
11
8
—
—
—
255
207
51
25
12
8
0.98
1.20
225.52
0.16
0.16
0.16
0.16
-6.99
8.51
8.51
—
255
207
103
25
12
6
0.30
1.17
2.73
8.19
—
1.14
-2.48
13.78
-14.67
—
26
6
—
—
1.95
62.76
0.16
0.16
0.16
0.16
-3.55
-6.99
4.17
0.00
0.00
2.4
3.50
45.65
0.23
2.40
2.40
2
9.6
9.62
9.62
9.62
0
19.2
38.4
57.6
76.8
96.0
250.0
500.0
19.04
38.91
55.93
74.57
99.43
223.72
447.44
-0.83
1.32
19.23
38.46
55.56
71.43
100.00
250.00
500.00
19,.23
35.71
62.50
83.33
—
—
—
—
—
—
—
—
—
—
-2.90
-2.90
3.57
3
—
—
6
2
—
—
4
—
0
—
—
-10.51
-10.51
3
1
250.00
—
0.00
—
—
—
1
0
—
—
—
2003 Microchip Technology Inc.
DS39599C-page 201
MICROCHIP [ MICROCHIP ]
