ATmega644R212 Atmel Corporation, ATmega644R212 Datasheet - Page 407

• 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

8011O–AVR–07/10
Figure 26-131.Calibrated 8 MHz RC Oscillator vs. Temperature
Figure 26-132.Calibrated 8 MHz RC Oscillator vs. OSCCAL Value
8.3
8.2
8.1
7.9
7.8
7.7
7.6
7.5
16
14
12
10
8
8
6
4
2
0
-60
0
16
-40
32
48
-20
64
80
96
0
Temperature (°C)
112
OSCCAL (X1)
128
20
ATmega164P/324P/644P
144
160
40
176
192
60
208
224
80
240
5.0V
3.0V
256
100
-40°C
85°C
25°C
407