ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 178
ATMEGA169
Manufacturer Part Number
ATMEGA169
Description
8-bit Microcontroller with 16K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA169.pdf
(365 pages)
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Table 82. Examples of UBRR Settings for Commonly Used Oscillator Frequencies (Continued)
1.
178
Baud
Rate
(bps)
2400
4800
9600
14.4k
19.2k
28.8k
38.4k
57.6k
76.8k
115.2k
230.4k
250k
0.5M
1M
Max.
(1)
UBRR = 0, Error = 0.0%
ATmega169/V
UBRR
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2X = 0
1 Mbps
f
osc
Error
-0.1%
-0.8%
-3.5%
0.6%
0.2%
0.2%
2.1%
0.2%
0.0%
0.2%
0.2%
8.5%
0.0%
0.0%
= 16.0000 MHz
UBRR
832
416
207
138
103
68
51
34
25
16
8
7
3
1
U2X = 1
2 Mbps
Error
-0.1%
-0.1%
-0.8%
-3.5%
0.0%
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.0%
0.0%
0.0%
UBRR
479
239
119
79
59
39
29
19
14
9
4
4
–
–
1.152 Mbps
U2X = 0
f
osc
Error
-7.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
–
= 18.4320 MHz
UBRR
959
479
239
159
119
79
59
39
29
19
9
8
4
–
2.304 Mbps
U2X = 1
Error
-7.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
2.4%
–
UBRR
520
259
129
86
64
32
21
15
10
42
4
4
–
–
1.25 Mbps
U2X = 0
f
osc
Error
-0.2%
-1.4%
-1.4%
-1.4%
0.0%
0.2%
0.2%
0.2%
0.9%
1.7%
8.5%
0.0%
–
–
= 20.0000 MHz
UBRR
1041
520
259
173
129
64
42
32
86
21
10
9
4
–
2.5 Mbps
2514P–AVR–07/06
U2X = 1
Error
-0.2%
-0.2%
-1.4%
-1.4%
-1.4%
0.0%
0.2%
0.2%
0.2%
0.9%
0.0%
0.0%
0.0%
–
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