Rainbow-electronics ATmega161L Manual de usuario Pagina 80

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ATmega161(L)
1228CAVR08/02
Table 25. UBR Settings at Various Crystal Frequencies in Double-speed Mode
Baud Rate 1.0000 MHz % Error 1.8432 MHz % Error 2.0000 MHz % Error
2400
4800
9600
14400
19200
28800
38400
57600
76800
115200
230400
UBR = 51
UBR = 25
UBR = 12
UBR = 8
UBR = 6
UBR = 3
UBR = 2
UBR = 1
UBR = 1
UBR = 0
-
0.2
0.2
0.2
3.7
7.5
7.8
7.8
7.8
22.9
84.3
-
UBR = 95
UBR = 47
UBR = 23
UBR = 15
UBR = 11
UBR = 7
UBR = 5
UBR = 3
UBR = 2
UBR = 1
UBR = 0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
UBR = 103
UBR = 51
UBR = 25
UBR = 16
UBR = 12
UBR = 8
UBR = 6
UBR = 3
UBR = 2
UBR = 1
UBR = 0
0.2
0.2
0.2
2.1
0.2
3.7
7.5
7.8
7.8
7.8
84.3
Baud Rate 3.2768 MHz % Error 3.6864 MHz % Error 4.0000 MHz % Error
2400
4800
9600
14400
19200
28800
38400
57600
76800
115200
230400
460800
912600
UBR = 170
UBR = 84
UBR = 42
UBR = 27
UBR = 20
UBR = 13
UBR = 10
UBR = 6
UBR = 4
UBR = 3
UBR = 1
UBR = 0
-
0.2
0.4
0.8
1.6
1.6
1.6
3.1
1.6
6.2
12.5
12.5
12.5
-
UBR = 191
UBR = 95
UBR = 47
UBR = 31
UBR = 23
UBR = 15
UBR = 11
UBR = 7
UBR = 5
UBR = 3
UBR = 1
UBR = 0
-
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
-
UBR = 207
UBR = 103
UBR = 51
UBR = 34
UBR = 25
UBR = 16
UBR = 12
UBR = 8
UBR = 6
UBR = 3
UBR = 1
UBR = 0
UBR = 0
0.2
0.2
0.2
0.8
0.2
2.1
0.2
3.7
7.5
7.8
7.8
7.8
84.3
Baud Rate 7.3728 MHz % Error 8.0000 MHz % Error 9.2160 MHz % Error
2400
4800
9600
14400
19200
28800
38400
57600
76800
115200
230400
460800
912600
UBR = 383
UBR = 191
UBR = 95
UBR = 63
UBR = 47
UBR = 31
UBR = 23
UBR = 15
UBR = 11
UBR = 7
UBR = 3
UBR = 1
UBR = 0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
UBR = 416
UBR = 207
UBR = 103
UBR = 68
UBR = 51
UBR = 34
UBR = 25
UBR = 16
UBR = 12
UBR = 8
UBR = 3
UBR = 1
UBR = 0
0.1
0.2
0.2
0.6
0.2
0.8
0.2
2.1
0.2
3.7
7.8
7.8
7.8
UBR = 479
UBR = 239
UBR = 119
UBR = 79
UBR = 59
UBR = 39
UBR = 29
UBR = 19
UBR = 14
UBR = 9
UBR = 4
UBR = 2
UBR = 0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
20.0
20.0
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