ATMEGA163 ATMEL [ATMEL Corporation], ATMEGA163 Datasheet - Page 79

• Manufacturer Part Number: ATMEGA163
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

1142E–AVR–02/03
number of samples are reduced, and the system clock might have some variance (this
applies especially when using resonators), it is recommended that the baud rate error is
less than 0.5%.
Table 28. UBR Settings at Various Crystal Frequencies in Double Speed Mode
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
% Error
% Error
22.9 UBR = 2
84.3 UBR = 1
12.5 UBR = 3
12.5 UBR = 1
12.5 UBR = 0
0.2 UBR = 95
0.2 UBR = 47
0.2 UBR = 23
3.7 UBR = 15
7.5 UBR = 11
7.8 UBR = 7
7.8 UBR = 5
7.8 UBR = 3
0.2 UBR = 191
0.4 UBR = 95
0.8 UBR = 47
1.6 UBR = 31
1.6 UBR = 23
1.6 UBR = 15
3.1 UBR = 11
1.6 UBR = 7
6.2 UBR = 5
0.0 UBR = 416
0.0 UBR = 207
0.0 UBR = 103
0.0 UBR = 68
0.0 UBR = 51
0.0 UBR = 34
0.0 UBR = 25
0.0 UBR = 16
0.0 UBR = 12
0.0 UBR = 8
0.0 UBR = 3
0.0 UBR = 1
0.0 UBR = 0
- UBR = 0
1.8432 MHz
3.6864 MHz
8.0000 MHz
% Error
% Error
% Error
0.0 UBR = 103
0.0 UBR = 51
0.0 UBR = 25
0.0 UBR = 16
0.0 UBR = 12
0.0 UBR = 8
0.0 UBR = 6
0.0 UBR = 3
0.0 UBR = 2
0.0 UBR = 1
0.0 -
0.0 UBR = 207
0.0 UBR = 103
0.0 UBR = 51
0.0 UBR = 34
0.0 UBR = 25
0.0 UBR = 16
0.0 UBR = 12
0.0 UBR = 8
0.0 UBR = 6
0.0 UBR = 3
0.0 UBR = 1
0.0 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
2.0000 MHz
4.0000 MHz
ATmega163(L)
% Error
% Error
0.2
0.2
0.2
2.1
0.2
3.7
7.5
7.8
7.8
7.8
0.2
0.2
0.2
0.8
0.2
2.1
0.2
3.7
7.5
7.8
7.8
7.8
-
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