Microchip Technology DM183037 Data Sheet
2012 Microchip Technology Inc.
DS30575A-page 417
PIC18F97J94 FAMILY
TABLE 21-2:
BAUD RATES FOR ASYNCHRONOUS MODES
BAUD
RATE
(K)
SYNC = 0, BRGH = 0, BRG16 = 0
F
OSC
= 40.000 MHz
F
OSC
= 20.000 MHz
F
OSC
= 10.000 MHz
F
OSC
= 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)
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)
SYNC = 0, BRGH = 0, BRG16 = 0
F
OSC
= 4.000 MHz
F
OSC
= 2.000 MHz
F
OSC
= 1.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.3
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)
SYNC = 0, BRGH = 1, BRG16 = 0
F
OSC
= 40.000 MHz
F
OSC
= 20.000 MHz
F
OSC
= 10.000 MHz
F
OSC
= 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)
0.3
—
—
—
—
—
—
—
—
—
—
—
—
1.2
—
—
—
—
—
—
—
—
—
—
—
—
2.4
—
—
—
—
—
—
2.441
1.73
255
2.403
-0.16
207
9.6
9.766
1.73
255
9.615
0.16
129
9.615
0.16
64
9.615
-0.16
51
19.2
19.231
0.16
129
19.231
0.16
64
19.531
1.73
31
19.230
-0.16
25
57.6
58.140
0.94
42
56.818
-1.36
21
56.818
-1.36
10
55.555
3.55
8
115.2
113.636
-1.36
21
113.636
-1.36
10
125.000
8.51
4
—
—
—
BAUD
RATE
(K)
SYNC = 0, BRGH = 1, BRG16 = 0
F
OSC
= 4.000 MHz
F
OSC
= 2.000 MHz
F
OSC
= 1.000 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.3
—
—
—
—
—
—
0.300
-0.16
207
1.2
1.202
0.16
207
1.201
-0.16
103
1.201
-0.16
51
2.4
2.404
0.16
103
2.403
-0.16
51
2.403
-0.16
25
9.6
9.615
0.16
25
9.615
-0.16
12
—
—
—
19.2
19.231
0.16
12
—
—
—
—
—
—
57.6
62.500
8.51
3
—
—
—
—
—
—
115.2
125.000
8.51
1
—
—
—
—
—
—