PIC18F6390_07 Datasheet, PDF (223/414 Pages) Microchip Technology – 64/80-Pin Flash Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F6390/6490/8390/8490
TABLE 17-3: BAUD RATES FOR ASYNCHRONOUS MODES
BAUD
RATE
(K)
BRGH = 0
FOSC = 40.000 MHz
FOSC = 20.000 MHz
FOSC = 10.000 MHz
FOSC = 8.000 MHz
Actual
Rate (K)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG
value
(decimal)
0.3
1.2
2.4
9.6
19.2
57.6
115.2
—
—
2.441
9.615
19.531
56.818
125.000
—
—
1.73
0.16
1.73
-1.36
8.51
—
—
—
—
1.221 1.73
255
2.404 0.16
64
9.766 1.73
31
19.531 1.73
10
62.500 8.51
4
104.167 -9.58
—
—
—
—
255
1.202 0.16
129
129
2.404 0.16
64
31
9.766 1.73
15
15
19.531 1.73
7
4
52.083 -9.58
2
2
78.125 -32.18
1
—
—
—
1.201 -0.16 103
2.403 -0.16
51
9.615 -0.16
12
—
—
—
—
—
—
—
—
—
BAUD
RATE
(K)
BRGH = 0
FOSC = 4.000 MHz
FOSC = 2.000 MHz
FOSC = 1.000 MHz
Actual
Rate (K)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG
value
(decimal)
0.3 0.300 0.16
207
0.300 -0.16
103
0.300 -0.16
51
1.2 1.202 0.16
51
1.201 -0.16
25
1.201 -0.16
12
2.4 2.404 0.16
25
2.403 -0.16
12
—
—
—
9.6 8.929 -6.99
6
—
—
—
—
—
—
19.2 20.833 8.51
2
—
—
—
—
—
—
57.6 62.500 8.51
0
—
—
—
—
—
—
115.2 62.500 -45.75
0
—
—
—
—
—
—
BAUD
RATE
(K)
BRGH = 1
FOSC = 40.000 MHz
FOSC = 20.000 MHz
FOSC = 10.000 MHz
FOSC = 8.000 MHz
Actual
Rate (K)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG
value
(decimal)
0.3
1.2
2.4
9.6
19.2
57.6
115.2
—
—
—
9.766
19.231
58.140
113.636
—
—
—
1.73
0.16
0.94
-1.36
—
—
—
—
—
—
—
—
—
255
9.615 0.16
129 19.231 0.16
42
56.818 -1.36
21 113.636 -1.36
—
—
—
—
—
—
—
2.441 1.73
129
9.615 0.16
64
19.531 1.73
21
56.818 -1.36
10 125.000 8.51
—
—
—
—
—
—
—
—
255
2.403 -0.16
207
64
9.615 -0.16
51
31
19.230 -0.16
25
10
55.555 3.55
8
4
—
—
—
BAUD
RATE
(K)
BRGH = 1
FOSC = 4.000 MHz
FOSC = 2.000 MHz
FOSC = 1.000 MHz
Actual
Rate (K)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG Actual
value Rate (K)
(decimal)
%
Error
SPBRG
value
(decimal)
0.3
—
—
1.2 1.202 0.16
2.4 2.404 0.16
9.6 9.615 0.16
19.2 19.231 0.16
57.6 62.500 8.51
115.2 125.000 8.51
—
—
—
—
0.300 -0.16
207
207
1.201 -0.16
103
1.201 -0.16
51
103
2.403 -0.16
51
2.403 -0.16
25
25
9.615 -0.16
12
—
—
—
12
—
—
—
—
—
—
3
—
—
—
—
—
—
1
—
—
—
—
—
—
© 2007 Microchip Technology Inc.
DS39629C-page 221