PIC18F87K90 Datasheet, PDF (353/566 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC18F87K90 FAMILY
TABLE 22-3: BAUD RATES FOR ASYNCHRONOUS MODES
BAUD
RATE
(K)
FOSC = 40.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
SYNC = 0, BRGH = 0, BRG16 = 0
FOSC = 20.000 MHz
FOSC = 10.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.3
—
—
—
—
—
—
—
—
—
1.2
—
—
—
1.221 1.73
255
1.202 0.16
129
2.4
2.441 1.73
255 2.404 0.16
129
2.404 0.16
64
9.6
9.615 0.16
64
9.766 1.73
31
9.766 1.73
15
19.2 19.531 1.73
31
19.531 1.73
15
19.531 1.73
7
57.6 56.818 -1.36
10
62.500 8.51
4
52.083 -9.58
2
115.2 125.000 8.51
4
104.167 -9.58
2
78.125 -32.18
1
FOSC = 8.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
—
—
—
1.201 -0.16
103
2.403 -0.16
51
9.615 -0.16
12
—
—
—
—
—
—
—
—
—
BAUD
RATE
(K)
0.3
1.2
2.4
9.6
19.2
57.6
115.2
SYNC = 0, BRGH = 0, BRG16 = 0
FOSC = 4.000 MHz
FOSC = 2.000 MHz
FOSC = 1.000 MHz
Actual
Rate
(K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.300 0.16
207
0.300 -0.16
103
0.300 -0.16
51
1.202 0.16
51
1.201 -0.16
25
1.201 -0.16
12
2.404 0.16
25
2.403 -0.16
12
—
—
—
8.929 -6.99
6
—
—
—
—
—
—
20.833 8.51
2
—
—
—
—
—
—
62.500 8.51
0
—
—
—
—
—
—
62.500 -45.75
0
—
—
—
—
—
—
BAUD
RATE
(K)
0.3
1.2
2.4
9.6
19.2
57.6
115.2
SYNC = 0, BRGH = 1, BRG16 = 0
FOSC = 40.000 MHz
FOSC = 20.000 MHz
FOSC = 10.000 MHz
Actual
Rate
(K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2.441 1.73
255
9.766 1.73
255 9.615 0.16
129
9.615 0.16
64
19.231 0.16
129 19.231 0.16
64
19.531 1.73
31
58.140 0.94
42
56.818 -1.36
21
56.818 -1.36
10
113.636 -1.36
21 113.636 -1.36
10 125.000 8.51
4
FOSC = 8.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
—
—
—
—
—
—
2.403 -0.16
207
9.615 -0.16
51
19.230 -0.16
25
55.555 3.55
8
—
—
—
BAUD
RATE
(K)
0.3
1.2
2.4
9.6
19.2
57.6
115.2
SYNC = 0, BRGH = 1, BRG16 = 0
FOSC = 4.000 MHz
FOSC = 2.000 MHz
FOSC = 1.000 MHz
Actual
Rate
(K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
—
—
—
—
—
—
0.300 -0.16
207
1.202 0.16
207
1.201 -0.16
103
1.201 -0.16
51
2.404 0.16
103 2.403 -0.16
51
2.403 -0.16
25
9.615 0.16
25
9.615 -0.16
12
—
—
—
19.231 0.16
12
—
—
—
—
—
—
62.500 8.51
3
—
—
—
—
—
—
125.000 8.51
1
—
—
—
—
—
—
 2010 Microchip Technology Inc.
Preliminary
DS39957B-page 353