ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 405

• Manufacturer Part Number: ATmega1281R231
• Manufacturer: Atmel Corporation

Specifications of ATmega1281R231

• Flash (kbytes): 128 Kbytes
• Max. Operating Frequency: 16 MHz
• Max I/o Pins: 54
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Adc Channels: 8
• 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: 2.4 GHz
• Max Data Rate (mb/s): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

2549N–AVR–05/11
Figure 32-37. Calibrated 8MHz RC Oscillator Frequency vs. V
Figure 32-38. Calibrated 8MHz RC Oscillator Frequency vs. Temperature
8.3
8.2
8.1
7.9
7.8
7.7
7.6
8.5
8.4
8.3
8.2
8.1
7.9
8
8
1.5
-60
-40
2
2.5
-20
ATmega640/1280/1281/2560/2561
3
0
Temperature (°C)
V
CC
3.5
20
(V)
40
4
CC
4.5
60
80
5
5.0V
3.0V
100
5.5
-40°C
85°C
25°C
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