PIC18F2220 Datasheet, PDF (202/388 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F2220/2320/4220/4320
TABLE 18-4: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 1, HIGH SPEED)
BAUD
RATE
(K)
FOSC = 40.000 MHz
FOSC = 20.000 MHz
FOSC = 16.000 MHz
Actual
Rate (K)
%
Error
SPBRG _Actual
value _{Rate (K)}
(decimal)
%
Error
SPBRG _Actual
value _{Rate (K)}
(decimal)
%
Error
SPBRG
value
(decimal)
FOSC = 10.000 MHz
Actual
Rate
(K)
% ^SPBRG
Error ^value
(decimal)
2.4
—
—
—
4.88 103.45 255
3.91 62.76 255
2.44 1.73
255
9.6
9.77
1.73
255
9.62
0.16
129
9.62
0.16
103
9.63 0.16
64
19.2 19.23 0.16
129
19.23 0.16
64
19.23 0.16
51
18.94 -1.36
32
38.4 38.46 0.16
64
37.88 -1.36
32
38.46 0.16
25
39.06 1.73
15
57.6 58.14 0.94
42
56.82 -1.36
21
58.82 2.12
16
56.82 -1.36
10
76.8 75.76 -1.36
32
78.13 1.73
15
76.92 0.16
12
78.13 1.73
7
96.0 96.15 0.16
25
96.15 0.16
12
100.00 4.17
9
89.29 -6.99
6
115.2 113.64 -1.36
21
113.64 -1.36
10
111.11 -3.55
8
125.00 8.51
4
250.0 250.00 0.00
9
250.00 0.00
4
250.00 0.00
3
208.33 -16.67
2
300.0 312.50 4.17
7
312.50 4.17
3
333.33 11.11
2
312.50 4.17
1
500.0 500.00 0.00
4
416.67 -16.67
2
500.00 0.00
1
—
—
—
625.0 625.00 0.00
3
625.00 0.00
1
—
—
— 625.00 0.00
0
1000.0 833.33 -16.67
2
—
—
—
1000.00 0.00
0
—
—
—
1250.0 1250.00 0.00
1
1250.00 0.00
0
—
—
—
—
—
—
BAUD
RATE
(K)
FOSC = 8.000000 MHz
FOSC = 7.159090 MHz
FOSC = 5.068800 MHz
FOSC = 4.000 MHz
Actual
Rate (K)
% ^SPBRG Actual
Error ^value Rate (K)
(decimal)
%
Error
SPBRG _Actual
value _{Rate (K)}
(decimal)
% ^SPBRG Actual
Error ^value Rate (K)
(decimal)
%
Error
SPBRG
value
(decimal)
0.3
—
—
—
—
—
—
—
—
—
0.98 225.52 255
1.2
1.95 62.76 255
1.75 45.65 255
1.24
3.13
255
1.20
0.16
207
2.4
2.40 0.16 207
2.41
0.23
185
2.40
0.00
131
2.40
0.16
103
9.6
9.62 0.16
51
9.52 -0.83
46
9.60
0.00
32
9.62
0.16
25
19.2 19.23 0.16
25
19.45 1.32
22
18.64 -2.94
16
19.23 0.16
12
38.4 38.46 0.16
12
37.29 -2.90
11
39.60 3.13
7
35.71 -6.99
6
57.6 55.56 -3.55
8
55.93 -2.90
7
52.80 -8.33
5
62.50 8.51
3
76.8 71.43 -6.99
6
74.57 -2.90
5
79.20 3.13
3
83.33 8.51
2
96.0 100.00 4.17
4
89.49 -6.78
4
—
—
—
—
—
—
115.2 125.00 8.51
3
111.86 -2.90
3
105.60 -8.33
2
125.00 8.51
1
250.0 250.00 0.00
1
223.72 -10.51
1
—
—
—
250.00 0.00
0
300.0
—
—
—
—
—
—
316.80 5.60
0
—
—
—
500.0 500.00 0.00
0
447.44 -10.51
0
—
—
—
—
—
—
BAUD
RATE
(K)
0.3
1.2
2.4
9.6
19.2
38.4
57.6
76.8
115.2
250.0
FOSC = 3.579545 MHz
FOSC = 2.000000 MHz
FOSC = 1.000000 MHz
FOSC = 0.032768 MHz
Actual
Rate (K)
% ^SPBRG Actual
Error ^value Rate (K)
(decimal)
% ^SPBRG Actual
Error ^value Rate (K)
(decimal)
% ^SPBRG Actual
Error ^value Rate (K)
(decimal)
% ^SPBRG
Error ^value
(decimal)
0.87 191.30 255
1.20
0.23
185
2.41
0.23
92
9.73
1.32
22
18.64 -2.90
11
37.29 -2.90
5
55.93 -2.90
3
74.57 -2.90
2
111.86 -2.90
1
223.72 -10.51
0
0.49 62.76 255
1.20
0.16
103
2.40
0.16
51
9.62
0.16
12
17.86 -6.99
6
41.67 8.51
2
62.50 8.51
1
—
—
—
125.00 8.51
0
—
—
—
0.30
0.16
207
1.20
0.16
51
2.40
0.16
25
8.93 -6.99
6
20.83 8.51
2
31.25 -18.62
1
62.50 8.51
0
—
—
—
—
—
—
—
—
—
0.29 -2.48
6
1.02 -14.67
1
2.05 -14.67
0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
DS39599C-page 200
 2003 Microchip Technology Inc.