HT45B0F
Baud Rates for BRGH=1
fCLKI=3.579545MHz
Baud
Rate
K/BPS
fCLKI=4MHz
fCLKI=7.159MHz
Kbaud Error (%)
BRG
¾
Kbaud Error (%)
BRG
¾
185
92
46
22
11
5
Kbaud Error (%)
BRG
¾
0.3
1.2
¾
¾
0.16
0.16
0.16
0.16
0.16
-6.99
8.51
8.51
0
¾
¾
¾
¾
¾
207
103
51
25
12
6
1.202
2.404
4.808
9.615
19.231
35.714
62.5
1.203
2.406
4.76
0.23
0.23
-0.83
1.32
-2.90
-2.90
-2.90
-2.90
¾
¾
¾
2.4
185
92
46
22
11
7
2.406
4.811
9.520
19.454
37.286
55.930
111.86
0.23
0.23
4.8
9.6
9.727
18.643
37.286
55.930
111.86
¾
-0.83
1.32
19.2
38.4
57.6
115.2
250
-2.90
-2.90
-2.90
¾
3
3
1
125
1
3
0
250
¾
¾
¾
Baud Rates and Error Values for BRGH = 1
·
BRG Register
Bit
Name
R/W
7
BRG7
R/W
x
6
5
BRG5
R/W
x
4
BRG4
R/W
x
3
BRG3
R/W
x
2
1
BRG1
R/W
x
0
BRG0
R/W
BRG6
R/W
x
BRG2
R/W
x
POR
x
²x²: unknown
Bit 7~0
BRG7~BRG0: Baud Rate values
By programming the BRGH bit in UCR2 Register which allows selection of the related formula
described above and programming the required value in the BRG register, the required baud rate
can be setup.
Rev. 1.10
13
September 24, 2012
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
