ATMEGA48V_11 ATMEL [ATMEL Corporation], ATMEGA48V_11 Datasheet - Page 195

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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 20-9.
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
Max.
(1)
1. UBRRn = 0, error = 0.0%
UBRRn
25
12
6
3
2
1
1
0
Examples of UBRRn settings for commonly used oscillator frequencies.
U2Xn = 0
62.5Kbps
f
Error
-18.6%
-7.0%
osc
0.2%
0.2%
8.5%
8.5%
8.5%
8.5%
= 1.0000MHz
UBRRn
51
25
12
8
6
3
2
1
1
0
U2Xn = 1
125Kbps
Error
-18.6%
-3.5%
-7.0%
0.2%
0.2%
0.2%
8.5%
8.5%
8.5%
8.5%
UBRRn
47
23
11
7
5
3
2
1
1
0
115.2Kbps
U2Xn = 0
f
osc
Error
-25.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
= 1.8432MHz
UBRRn
95
47
23
15
11
230.4Kbps
2
U2Xn = 1
7
5
3
1
0
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
UBRRn
ATmega48/88/168
51
25
12
8
6
3
2
1
1
0
U2Xn = 0
125Kbps
f
Error
osc
-18.6%
-3.5%
-7.0%
0.2%
0.2%
0.2%
8.5%
8.5%
8.5%
8.5%
= 2.0000MHz
UBRRn
103
51
25
16
12
8
6
3
2
1
0
U2Xn = 1
250Kbps
Error
-3.5%
-7.0%
0.2%
0.2%
0.2%
2.1%
0.2%
8.5%
8.5%
8.5%
0.0%
195

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