ATmega1280R212 Atmel Corporation, ATmega1280R212 Datasheet - Page 231

• Manufacturer Part Number: ATmega1280R212
• Manufacturer: Atmel Corporation

Specifications of ATmega1280R212

• Flash (kbytes): 128 Kbytes
• Max. Operating Frequency: 16 MHz
• Max I/o Pins: 86
• Spi: 5
• Twi (i2c): 1
• Uart: 4
• Adc Channels: 16
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Crypto Engine: AES
• Sram (kbytes): 8
• Eeprom (bytes): 4096
• Operating Voltage (vcc): 1.8 to 3.6
• Timers: 6
• Frequency Band: 700/800/900MHz
• Max Data Rate (mb/s): 1
• Antenna Diversity: No
• External Pa Control: Yes
• Power Output (dbm): 10
• Receiver Sensitivity (dbm): -110
• Receive Current Consumption (ma): 9.0
• Transmit Current Consumption (ma): 18 at 5dBm
• Link Budget (dbm): 120

Table 22-12. Examples of UBRRn Settings for Commonly Used Oscillator Frequencies
2549N–AVR–05/11
Max.
115.2K
230.4K
14.4K
19.2K
28.8K
38.4K
57.6K
76.8K
Baud
(bps)
250K
Rate
2400
4800
9600
0.5M
1M
(1)
UBRR
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2Xn = 0
1Mbps
f
osc
-0.1%
-3.5%
-0.8%
Error
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.2%
8.5%
0.0%
0.0%
0.0%
= 16.0000MHz
Note:
UBRR
832
416
207
138
103
68
51
34
25
16
8
7
3
1
U2Xn = 1
1. UBRR = 0, Error = 0.0%
2Mbps
-0.1%
-0.1%
-0.8%
-3.5%
Error
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
–
–
1.152Mbps
U2Xn = 0
f
osc
ATmega640/1280/1281/2560/2561
-7.8%
Error
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
–
= 18.4320MHz
UBRR
959
479
239
159
119
79
59
39
29
19
9
8
4
–
2.304Mbps
U2Xn = 1
-7.8%
Error
0.0%
0.0%
0.0%
0.0%
0.0%
2.4%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
–
UBRR
520
259
129
86
64
42
32
21
15
10
4
4
–
–
1.25Mbps
U2Xn = 0
f
osc
-0.2%
-1.4%
-1.4%
-1.4%
Error
0.0%
0.2%
0.2%
0.2%
0.9%
1.7%
8.5%
0.0%
–
–
= 20.0000MHz
UBRR
1041
520
259
173
129
86
64
42
32
21
10
9
4
–
U2Xn = 1
2.5Mbps
-0.2%
-0.2%
-1.4%
-1.4%
-1.4%
Error
0.0%
0.0%
0.2%
0.2%
0.2%
0.9%
0.0%
0.0%
–
231