ATMEGA48V_11 ATMEL [ATMEL Corporation], ATMEGA48V_11 Datasheet - Page 197

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ATMEGA48V_11

Manufacturer Part Number
ATMEGA48V_11
Description
8-bit Atmel Microcontroller with 4/8/16K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
Table 20-11. Examples of UBRRn settings for commonly used oscillator frequencies.
Note:
2545T–AVR–05/11
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)
1. UBRRn = 0, error = 0.0%
UBRRn
207
103
51
34
25
16
12
8
6
3
1
1
0
U2Xn = 0
0.5Mbps
f
osc
Error
-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%
= 8.0000MHz
UBRRn
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2Xn = 1
1Mbps
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%
UBRRn
287
143
71
47
35
23
17
11
691.2Kbps
8
5
2
2
U2Xn = 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%
= 11.0592MHz
UBRRn
575
287
143
1.3824Mbps
95
71
47
35
23
17
11
5
5
2
U2Xn = 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%
UBRRn
383
191
95
63
47
31
23
15
11
921.6Kbps
7
3
3
1
0
U2Xn = 0
ATmega48/88/168
f
osc
Error
-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%
= 14.7456MHz
UBRRn
767
383
191
127
1.8432Mbps
95
63
47
31
23
15
7
6
3
1
U2Xn = 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%
197

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