LCD Type MCU
The following tables show actual values of baud rate and error values for the two values of BRGH.
Baud
Rate
Kbps
0.3
1.2
2.4
4.8
9.6
19.2
38.4
57.6
115.2
Baud Rates for BRGH = 0
f
SYS
= 8MHz
BRG
¾
103
51
25
12
6
2
1
0
Kbaud Error
¾
1.202
2.404
4.807
9.615
¾
0.16
0.16
0.16
0.16
f
SYS
= 7.159MHz
BRG
¾
92
46
22
11
5
2
1
0
Kbaud Error
¾
1.203
2.38
4.863
9.322
16.64
37.29
55.93
111.86
¾
0.23
-0.83
1.32
-2.9
-2.9
-2.9
-2.9
-2.9
f
SYS
= 4MHz
BRG
207
51
25
12
6
2
1
0
¾
Kbaud Error
0.3
1.202
2.404
4.808
8.929
20.83
¾
62.5
¾
0
0.16
0.16
0.16
-6.99
8.51
¾
8.51
¾
f
SYS
= 3.579545MHz
BRG
185
46
22
11
5
2
1
0
¾
Kbaud Error
0.3
1.19
2.432
4.661
9.321
18.643
¾
55.93
¾
0
-0.83
1.32
-2.9
-2.9
-2.9
¾
-2.9
¾
17.857
-6.99
41.667
62.5
125
8.51
8.51
8.51
Baud Rates and Error Values for BRGH = 0
Baud
Rate
Kbps
0.3
1.2
2.4
4.8
9.6
19.2
38.4
57.6
115.2
250
Baud Rates for BRGH = 1
f
SYS
= 8MHz
BRG
¾
¾
207
103
51
25
12
8
3
1
Kbaud Error
¾
¾
2.404
4.808
9.615
19.231
38.462
¾
¾
0.16
0.16
0.16
0.16
0.16
f
SYS
= 7.159MHz
BRG
¾
¾
185
92
46
22
11
7
3
¾
Kbaud Error
¾
¾
2.405
4.811
¾
¾
0.23
0.23
¾
207
103
51
25
12
6
3
1
0
f
SYS
= 4MHz
BRG
Kbaud Error
¾
1.202
2.404
4.808
9.615
19.231
¾
0.16
0.16
0.16
0.16
0.16
f
SYS
= 3.579545MHz
BRG
¾
185
92
46
22
11
5
3
1
¾
Kbaud Error
¾
1.203
2.406
4.76
9.727
18.643
37.286
55.930
111.86
¾
¾
0.23
0.23
-0.83
1.32
-2.9
-2.9
-2.9
-2.9
¾
9.520
-0.832
19.454
37.287
55.93
111.86
¾
1.32
-2.9
-2.9
-2.9
¾
35.714
-6.99
62.5
125
250
8.51
8.51
0
55.556
-3.55
125
250
8.51
0
Baud Rates and Error Values for BRGH = 1
92
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