ATmega644PR231 Atmel Corporation, ATmega644PR231 Datasheet - Page 376

• Manufacturer Part Number: ATmega644PR231
• Manufacturer: Atmel Corporation

Specifications of ATmega644PR231

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Max I/o Pins: 32
• 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): 4
• Eeprom (bytes): 2048
• Operating Voltage (vcc): 1.8 to 3.6
• Timers: 3
• 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

26.2.9
8011O–AVR–07/10
Pin Threshold and Hysteresis
Figure 26-72. I/O Pin Input Threshold vs. V
Figure 26-73. I/O Pin Input Threshold vs. V
3.5
2.5
1.5
0.5
2.5
1.5
0.5
3
2
1
0
2
1
0
1.5
1.5
2
2
2.5
2.5
3
3
CC
CC
V
V
(V
CC
(V
CC
3.5
3.5
(V)
(V)
IH
IL
ATmega164P/324P/644P
, I/O Pin Read as ‘0’).
, I/O Pin Read as ‘1’).
4
4
4.5
4.5
5
5
5.5
5.5
-40°C
-40°C
85°C
25°C
25°C
85°C
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