PIC18F87J90 Datasheet, PDF (260/450 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F87J90 FAMILY
TABLE 19-3: 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
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 2.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 1.000 MHz
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
value
(decimal)
Actual
Rate
(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
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 2.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 1.000 MHz
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
—
—
—
—
—
—
DS39933D-page 260
 2010 Microchip Technology Inc.