ATmega644R212 Atmel Corporation, ATmega644R212 Datasheet - Page 356

• 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

26.1.11
8011O–AVR–07/10
Internal Oscillator Speed
Figure 26-34. Watchdog Oscillator Frequency vs. Temperature.
Figure 26-35. Watchdog Oscillator Frequency vs. V
128
126
124
122
120
118
116
129
127
125
123
121
119
117
115
-60
1.5
-40
2
-20
2.5
0
3
Temperature (°C)
V
CC
3.5
20
(V)
ATmega164P/324P/644P
CC
.
40
4
4.5
60
80
5
1.8V
2.7V
3.3V
4.0V
5.5V
100
5.5
-40°C
25°C
85°C
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