ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 177

• Manufacturer Part Number: ATMEGA169
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Table 81. Examples of UBRR Settings for Commonly Used Oscillator Frequencies (Continued)
1.
2514P–AVR–07/06
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%
UBRR
207
103
51
34
25
16
12
8
6
3
1
1
0
–
0.5 Mbps
U2X = 0
f
Error
osc
-0.8%
-3.5%
-7.0%
0.2%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
0.0%
0.0%
–
= 8.0000 MHz
UBRR
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2X = 1
1 Mbps
Error
-0.1%
-0.8%
-3.5%
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.2%
8.5%
0.0%
0.0%
0.0%
UBRR
287
143
71
47
35
23
17
11
8
5
2
2
–
–
691.2 kbps
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%
=
–
–
11.0592
UBRR
575
287
143
95
71
47
35
23
17
11
1.3824 Mbps
5
5
2
–
MHz
U2X = 1
Error
-7.8%
-7.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
UBRR
383
191
95
63
47
31
23
15
11
7
3
3
1
0
921.6 kbps
U2X = 0
f
osc
Error
ATmega169/V
-7.8%
-7.8%
-7.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
= 14.7456 MHz
UBRR
383
191
127
767
1.8432 Mbps
95
63
47
31
23
15
7
6
3
1
U2X = 1
Error
-7.8%
-7.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
5.3%
177