PIC18F87J11_12 Datasheet, PDF (291/466 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Flash Microcontrollers

PIC18F87J11 FAMILY
TABLE 21-3: BAUD RATES FOR ASYNCHRONOUS MODES
SYNC = 0, BRGH = 0, BRG16 = 0
Baud
Rate
(K)
FOSC = 40.000 MHz
Actual
Rate (K)
%
Error
SPBRG
Value
(decimal)
FOSC = 20.000 MHz
Actual
Rate (K)
%
Error
SPBRG
Value
(decimal)
FOSC = 10.000 MHz
Actual
Rate (K)
%
Error
SPBRG
Value
(decimal)
FOSC = 8.000 MHz
Actual
Rate (K)
%
Error
SPBRG
Value
(decimal)
0.3
—
—
—
—
—
—
—
—
—
—
—
—
1.2
—
—
—
1.221 1.73
255
1.202 0.16
129
1.201 -0.16
103
2.4
2.441 1.73
255
2.404
0.16
129
2.404 0.16
64
2.403 -0.16
51
9.6
9.615 0.16
64
9.766 1.73
31
9.766 1.73
15
9.615 -0.16
12
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
—
—
—
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
Value
(decimal)
Actual
Rate (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
FOSC = 8.000 MHz
Actual
Rate (K)
%
Error
SPBRG
Value
(decimal)
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
2.403 -0.16
207
9.766 1.73
255
9.615
0.16
129
9.615 0.16
64
9.615 -0.16
51
19.231 0.16
129 19.231 0.16
64
19.531 1.73
31
19.230 -0.16
25
58.140 0.94
42
56.818 -1.36
21
56.818 -1.36
10
55.555 3.55
8
113.636 -1.36
21 113.636 -1.36
10 125.000 8.51
4
—
—
—
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
Value
(decimal)
Actual
Rate (K)
%
Error
SPBRG
Value
(decimal)
Actual
Rate (K)
%
Error
SPBRG
Value
(decimal)
—
—
1.202 0.16
—
—
—
—
0.300 -0.16
207
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
—
—
—
—
—
—
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DS39778E-page 291