ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 400

• 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 32-27. I/O Pin Input Threshold Voltage vs. V
Figure 32-28. I/O Pin Input Hysteresis
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
2.5
1.5
0.5
0
2
1
0
1.5
1.5
2
2
2.5
2.5
ATmega640/1280/1281/2560/2561
3
3
V
CC
V
3.5
CC
3.5
(V)
(V)
CC
4
(V
4
IL
, IO Pin Read as “0“)
4.5
4.5
5
5
5.5
5.5
-40°C
25°C
85°C
-40°C
85°C
25°C
400