atmega161-4pi ATMEL Corporation, atmega161-4pi Datasheet - Page 80

• Manufacturer Part Number: atmega161-4pi
• Description: 8-bit Microcontroller With 16k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

Table 25. UBR Settings at Various Crystal Frequencies in Double-speed Mode
80
Baud Rate
2400
4800
9600
14400
19200
28800
38400
57600
76800
115200
230400
Baud Rate
2400
4800
9600
14400
19200
28800
38400
57600
76800
115200
230400
460800
912600
Baud Rate
2400
4800
9600
14400
19200
28800
38400
57600
76800
115200
230400
460800
912600
ATmega161(L)
1.0000 MHz
UBR = 51
UBR = 25
UBR = 12
UBR = 8
UBR = 6
UBR = 3
UBR = 2
UBR = 1
UBR = 1
UBR = 0
-
3.2768 MHz
UBR = 170
UBR = 84
UBR = 42
UBR = 27
UBR = 20
UBR = 13
UBR = 10
UBR = 6
UBR = 4
UBR = 3
UBR = 1
UBR = 0
-
7.3728 MHz
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
% Error
0.2
0.2
0.2
3.7
7.5
7.8
7.8
7.8
22.9
84.3
-
% Error
0.2
0.4
0.8
1.6
1.6
1.6
3.1
1.6
6.2
12.5
12.5
12.5
-
% Error
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
1.8432 MHz
UBR = 95
UBR = 47
UBR = 23
UBR = 15
UBR = 11
UBR = 7
UBR = 5
UBR = 3
UBR = 2
UBR = 1
UBR = 0
3.6864 MHz
UBR = 191
UBR = 95
UBR = 47
UBR = 31
UBR = 23
UBR = 15
UBR = 11
UBR = 7
UBR = 5
UBR = 3
UBR = 1
UBR = 0
-
8.0000 MHz
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
% Error
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
% Error
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
-
% Error
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
2.0000 MHz
UBR = 103
UBR = 51
UBR = 25
UBR = 16
UBR = 12
UBR = 8
UBR = 6
UBR = 3
UBR = 2
UBR = 1
UBR = 0
4.0000 MHz
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
9.2160 MHz
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
1228D–AVR–02/07
% Error
0.2
0.2
0.2
2.1
0.2
3.7
7.5
7.8
7.8
7.8
84.3
% Error
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
% Error
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