
Table 14-3 Examples of BRR Settings in Asynchronous Mode (4)
XTAL Frequency (MHz)
16
Error
N
(%)
141
+0.03
103
+0.16
207
+0.16
103
+0.16
207
+0.16
103
+0.16
51
+0.16
25
+0.16
12
+0.16
7
0
—
—
14.7456
19.6608
20
Bit
Rate
110
150
300
600
1200
2400
4800
9600
19200
31250
38400
Error
(%)
–0.07
0
0
0
0
0
0
0
0
—
0
Error
(%)
–0.26
0
0
0
0
0
0
0
0
–1.70
0
Error
(%)
+0.88
+0.16
+0.16
+0.16
+0.16
+0.16
+0.16
–1.36
+1.73
0
+1.73
n
2
2
1
1
0
0
0
0
0
—
0
N
130
95
191
95
191
95
47
23
11
—
5
n
2
2
1
1
0
0
0
0
0
0
—
n
2
2
1
1
0
0
0
0
0
0
0
N
174
127
255
127
255
127
63
31
15
9
7
n
3
2
2
1
1
0
0
0
0
0
0
N
43
129
64
129
64
129
64
32
15
9
7
XTAL Frequency (MHz)
24.576
Error
N
(%)
n
217
0.08
2
159
0.00
2
79
0.00
2
159
0.00
1
79
0.00
1
159
0.00
0
79
0.00
0
39
0.00
0
19
0.00
0
11
2.40
0
9
0.00
0
24
28
29.4912
32
Bit
Rate
110
150
300
600
1200
2400
4800
9600
19200
31250
38400
Error
(%)
0.03
0.16
0.16
0.16
0.16
0.16
0.16
0.16
–2.34
0.00
–2.34
Error
(%)
–0.17
0.16
0.16
0.16
0.16
0.16
0.16
–0.93
–0.93
0.00
3.57
Error
(%)
0.70
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
–1.70
0.00
Error
(%)
0.03
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.00
0.16
n
2
2
2
1
1
0
0
0
0
0
0
N
212
155
77
155
77
155
77
38
19
11
9
n
2
2
2
1
1
0
0
0
0
0
0
N
248
181
90
181
90
181
90
45
22
13
10
n
3
2
2
1
1
0
0
0
0
0
0
N
64
191
95
191
95
191
95
47
23
14
11
n
3
2
2
1
1
0
0
0
0
0
0
N
70
207
103
207
103
207
103
51
25
15
12
Note:
If possible, select a setting such that the error is 1% or less.
B = OSC
×
106/[64
×
22n
×
(N + 1)]
B :
N :
Bit rate
BRR value (0
≤
N
≤
255)
Crystal oscillator frequency in MHz
Internal clock source (0, 1, 2, or 3)
OSC :
n :
267