PIC18CXX2_13 Datasheet, PDF (154/304 Pages) Microchip Technology – High Performance Microcontrollers with 10-bit A/D

PIC18CXX2
TABLE 15-5: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 1)
BAUD
RATE
(K)
FOSC = 40 MHz
FOSC = 20 MHz
FOSC = 16 MHz
FOSC = 10 MHz
Actual
Rate
(K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG
value
(decimal)
9.6
9.77 -1.70
255
9.615 +0.16
129 9.615 +0.16
103 9.615 +0.16
64
19.2 19.23 -0.16
129 19.230 +0.16
64 19.230 +0.16
51 18.939 -1.36
32
38.4 38.46 -0.16
64 37.878 -1.36
32 38.461 +0.16
25 39.062 +1.7
15
57.6 58.14 -0.93
42 56.818 -1.36
21 58.823 +2.12
16 56.818 -1.36
10
115.2 113.64 +1.38
21
113.63 -1.36
10
111.11 -3.55
8
125 +8.51
4
250 250.00
0
9
250
0
4
250
0
3
NA
—
—
625 625.00
0
3
625
0
1
NA
—
—
625
0
0
1250 1250.00 0
1
1250
0
0
NA
—
—
NA
—
—
BAUD
RATE
(K)
FOSC = 7.16MHz
FOSC = 5.068 MHz
FOSC = 4 MHz
FOSC = 3.579545 MHz
Actual
Rate
(K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG
value
(decimal)
9.6 9.520 -0.83
46
9.6
0
32
NA
—
—
9.727 +1.32
22
19.2 19.454 +1.32
22
18.645 -2.94
16
1.202 +0.17
207 18.643 -2.90
11
38.4 37.286 -2.90
11
39.6 +3.12
7
2.403 +0.13
103 37.286 -2.90
5
57.6 55.930 -2.90
7
52.8 -8.33
5
9.615 +0.16
25 55.930 -2.90
3
115.2 111.860 -2.90
3
105.6 -8.33
2
19.231 +0.16
12 111.86 -2.90
1
250
NA
—
—
NA
—
—
NA
—
— 223.72 -10.51
0
625
NA
—
—
NA
—
—
NA
—
—
NA
—
—
1250 NA
—
—
NA
—
—
NA
—
—
NA
—
—
BAUD
RATE
(K)
FOSC = 1 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 32.768 kHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
9.6 8.928 -6.99
6
NA
—
—
19.2 20.833 +8.51
2
NA
—
—
38.4 31.25 -18.61
1
NA
—
—
57.6 62.5 +8.51
0
NA
—
—
115.2 NA
—
—
NA
—
—
250 NA
—
—
NA
—
—
625 NA
—
—
NA
—
—
1250 NA
—
—
NA
—
—
DS39026D-page 154
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