PIC18F2220_07 Datasheet, PDF (201/386 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 18-3: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0, LOW SPEED)
BAUD
RATE
(K)
FOSC = 40.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 20.000 MHz
FOSC = 16.000 MHz
Actual
Rate
(K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG
value
(decimal)
FOSC = 10.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.3
—
—
—
—
—
1.2
—
—
—
1.22 1.73
2.4
2.44 1.73
255
2.40 0.16
9.6
9.62 0.16
64
9.47 -1.36
19.2 18.94 -1.36
32
19.53 1.73
38.4 39.06 1.73
15
39.06 1.73
57.6 56.82 -1.36
10
62.50 8.51
76.8 78.13 1.73
7
78.13 1.73
96.0 89.29 -6.99
6
104.17 8.51
115.2 125.00 8.51
4
—
—
250.0 208.33 -16.67
2
—
—
300.0 312.50 4.17
1
312.50 4.17
625.0 625.00 0.00
0
—
—
—
0.98 225.52 255
255
1.20 0.16
207
129
2.40 0.16
103
32
9.62 0.16
25
15
19.23 0.16
12
7
35.71 -6.99
6
4
62.50 8.51
3
3
83.33 8.51
2
2
—
—
—
— 125.00 8.51
1
250.00 0.00
0
0
—
—
—
—
—
—
—
0.61 103.45 255
1.20 0.16
129
2.40 0.16
64
9.77 1.73
15
19.53 1.73
7
39.06 1.73
3
52.08 -9.58
2
78.13 1.73
1
—
—
—
78.13 -32.18
1
—
—
—
—
—
—
—
—
—
BAUD
RATE
(K)
FOSC = 8.000000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 7.159090 MHz
FOSC = 5.068800 MHz
Actual
Rate
(K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG
value
(decimal)
FOSC = 4.000000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.3
0.49 62.76
255
0.44 45.65 255
0.31 3.13
1.2
1.20
0.16
103
1.20 0.23
92
1.20 0.00
2.4
2.40
0.16
51
2.38 -0.83
46
2.40 0.00
9.6
9.62
0.16
12
9.32 -2.90
11
9.90 3.13
19.2 17.86 -6.99
6
18.64 -2.90
5
19.80 3.13
38.4 41.67 8.51
2
37.29 -2.90
2
39.60 3.13
57.6 62.50 8.51
1
55.93 -2.90
1
—
—
—
—
—
—
—
—
—
79.20 3.13
115.2 125.00 8.51
0
111.86 -2.90
0
—
—
255
0.30 0.16
207
65
1.20 0.16
51
32
2.40 0.16
25
7
8.93 -6.99
6
3
20.83 8.51
2
1
31.25 -18.62
1
—
62.50 8.51
0
0
—
—
—
—
—
—
—
BAUD
RATE
(K)
0.3
1.2
2.4
9.6
19.2
38.4
57.6
FOSC = 3.579545 MHz
Actual
Rate
(K)
0.30
1.19
2.43
9.32
18.64
—
55.93
%
Error
0.23
-0.83
1.32
-2.90
-2.90
—
-2.90
SPBRG
value
(decimal)
185
46
22
5
2
—
0
FOSC = 2.000000 MHz
FOSC = 1.000000 MHz
FOSC = 0.032768 MHz
Actual
Rate
(K)
0.30
1.20
2.40
10.42
15.63
31.25
—
%
Error
0.16
0.16
0.16
8.51
-18.62
-18.62
—
SPBRG Actual
value Rate
(decimal) (K)
103
0.30
25
1.20
12
2.23
2
7.81
1
15.63
0
—
—
—
%
Error
0.16
0.16
-6.99
-18.62
-18.62
—
—
SPBRG Actual
value Rate
(decimal) (K)
51
0.26
12
—
6
—
1
—
0
—
—
—
—
—
%
Error
-14.67
—
—
—
—
—
—
SPBRG
value
(decimal)
1
—
—
—
—
—
—
© 2007 Microchip Technology Inc.
DS39599F-page 199