Microchip Technology DM164134 データシート
PIC18FXX8
DS41159E-page 186
© 2006 Microchip Technology Inc.
TABLE 18-3:
BAUD RATES FOR SYNCHRONOUS MODE
BAUD
RATE
(Kbps)
F
OSC
= 40 MHz
SPBRG
value
(decimal)
33 MHz
SPBRG
value
(decimal)
25 MHz
SPBRG
value
(decimal)
20 MHz
SPBRG
value
(decimal)
KBAUD
%
ERROR
KBAUD
%
ERROR
KBAUD
%
ERROR
KBAUD
%
ERROR
0.3
NA
-
-
NA
-
-
NA
-
-
NA
-
-
1.2
NA
-
-
NA
-
-
NA
-
-
NA
-
-
2.4
NA
-
-
NA
-
-
NA
-
-
NA
-
-
9.6
NA
-
-
NA
-
-
NA
-
-
NA
-
-
19.2
NA
-
-
NA
-
-
NA
-
-
NA
-
-
76.8
76.92
+0.16
129
77.10
+0.39
106
77.16
+0.47
80
76.92
+0.16
64
96
96.15
+0.16
103
95.93
-0.07
85
96.15
+0.16
64
96.15
+0.16
51
300
303.03
+1.01
32
294.64
-1.79
27
297.62
-0.79
20
294.12
-1.96
16
500
500
0
19
485.30
-2.94
16
480.77
-3.85
12
500
0
9
HIGH
10000
-
0
8250
-
0
6250
-
0
5000
-
0
LOW
39.06
-
255
32.23
-
255
24.41
-
255
19.53
-
255
BAUD
RATE
(Kbps)
F
OSC
= 16 MHz
SPBRG
value
(decimal)
10 MHz
SPBRG
value
(decimal)
7.15909 MHz
SPBRG
value
(decimal)
5.0688 MHz
SPBRG
value
(decimal)
KBAUD
%
ERROR
KBAUD
%
ERROR
KBAUD
%
ERROR
KBAUD
%
ERROR
0.3
NA
-
-
NA
-
-
NA
-
-
NA
-
-
1.2
NA
-
-
NA
-
-
NA
-
-
NA
-
-
2.4
NA
-
-
NA
-
-
NA
-
-
NA
-
-
9.6 NA
-
-
NA
-
-
9.62
+0.23
185
9.60
0
131
19.2
19.23
+0.16
207
19.23
+0.16
129
19.24
+0.23
92
19.20
0
65
76.8
76.92
+0.16
51
75.76
-1.36
32
77.82
+1.32
22
74.54
-2.94
16
96
95.24
-0.79
41
96.15
+0.16
25
94.20
-1.88
18
97.48
+1.54
12
300
307.70
+2.56
12
312.50
+4.17
7
298.35
-0.57
5
316.80
+5.60
3
500
500
0
7
500
0
4
447.44
-10.51
3
422.40
-15.52
2
HIGH
4000
-
0
2500
-
0
1789.80
-
0
1267.20
-
0
LOW
15.63
-
255
9.77
-
255
6.99
-
255
4.95
-
255
BAUD
RATE
(Kbps)
F
OSC
= 4 MHz
SPBRG
value
(decimal)
3.579545 MHz
SPBRG
value
(decimal)
1 MHz
SPBRG
value
(decimal)
32.768 kHz
SPBRG
value
(decimal)
KBAUD
%
ERROR
KBAUD
%
ERROR
KBAUD
%
ERROR
KBAUD
%
ERROR
0.3
NA
-
-
NA
-
-
NA
-
-
0.30
+1.14
26
1.2
NA
-
-
NA
-
-
1.20
+0.16
207
1.17
-2.48
6
2.4
NA
-
-
NA
-
-
2.40
+0.16
103
2.73
+13.78
2
9.6
9.62
+0.16
103
9.62
+0.23
92
9.62
+0.16
25
8.20
-14.67
0
19.2
19.23
+0.16
51
19.04
-0.83
46
19.23
+0.16
12
NA
-
-
76.8
76.92
+0.16
12
74.57
-2.90
11
83.33
+8.51
2
NA
-
-
96
1000
+4.17
9
99.43
+3.57
8
83.33
-13.19
2
NA
-
-
300
333.33
+11.11
2
298.30
-0.57
2
250
-16.67
0
NA
-
-
500
500
0
1
447.44
-10.51
1
NA
-
-
NA
-
-
HIGH
1000
-
0
894.89
-
0
250
-
0
8.20
-
0
LOW
3.91
-
255
3.50
-
255
0.98
-
255
0.03
-
255