ATmega644R212 Atmel Corporation, ATmega644R212 Datasheet - Page 329

• 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

25.2
8011O–AVR–07/10
Speed Grades
Maximum frequency is depending on V
mum Frequency vs. V
4.5V.
Figure 25-1. Maximum Frequency vs. V
Figure 25-2. Maximum Frequency vs. V
10 MHz
20 MHz
10 MHz
4 MHz
1.8V
2.7V
CC
curve is linear between 1.8V < V
Safe Operating Area
Safe Operating Area
2.7V
CC.
CC
CC
4.5V
As shown in
, ATmega164PV/ATmega324PV/ATmega644PV
, ATmega164P/324P/644P
ATmega164P/324P/644P
5.5V
Figure 25-1
CC
< 2.7V and between 2.7V < V
5.5V
and
Figure
25-2, the Maxi-
CC
329
<