ATmega644R212 Atmel Corporation, ATmega644R212 Datasheet - Page 32

• Manufacturer Part Number: ATmega644R212
• Manufacturer: Atmel Corporation

Specifications of ATmega644R212

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Max I/o Pins: 32
• Spi: 3
• Twi (i2c): 1
• Uart: 1
• 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: 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

8111C–MCU Wireless–09/09
• Bit 0 - IRQ_POLARITY
The default polarity of the IRQ pin is active high. The polarity can be configured to active low via
register bit IRQ_POLARITY, see
Table 6-11.
This setting does not affect the polarity of the Frame Buffer Empty Indicator, refer to
11.7 “Frame Buffer Empty Indicator” on page
active high.
Register Bit
IRQ_POLARITY
Configuration of Pin 24 (IRQ)
Value
0
1
Table 6-11 on page
Description
pin IRQ high active
pin IRQ low active
152. The Frame Buffer Empty Indicator is always
32.
AT86RF231
Section
32