ATmega644R212 Atmel Corporation, ATmega644R212 Datasheet - Page 337

• 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

Table 25-12. ADC Characteristics, Differential Channels (Continued)
Note:
8011O–AVR–07/10
Symbol
AVCC
R
V
V
V
V
REF
INT1
INT2
REF
IN
1. Values are guidelines only.
Parameter
Gain Error
Offset Error
Conversion Time
Clock Frequency
Analog Supply Voltage
Reference Voltage
Input Differential Voltage
ADC Conversion Output
Input Bandwidth
Internal Voltage Reference
Internal Voltage Reference
Reference Input Resistance
Condition
Gain = 1×
V
ADC clock = 200 kHz
Gain = 10×
V
ADC clock = 200 kHz
Gain = 200×
V
ADC clock = 200 kHz
Gain = 1×
V
ADC clock = 200 kHz
Gain = 10×
V
ADC clock = 200 kHz
Gain = 200×
V
ADC clock = 200 kHz
1.1V
2.56V
CC
CC
CC
CC
CC
CC
= 5V, V
= 5V, V
= 5V, V
= 5V, V
= 5V, V
= 5V, V
REF
REF
REF
REF
REF
REF
= 4V
= 4V
= 4V
= 4V
= 4V
= 4V
ATmega164P/324P/644P
Min
V
-511
2.33
0.3
2.0
1.0
13
50
CC
0
(1)
-
Typ
19.5
19.5
1.25
2.56
6.5
2.5
1.1
32
1
4
(1)
Max
AVCC -
AVCC
V
1000
2.79
260
511
0.3
0.5
1.2
CC
(1)
+
Units
LSB
LSB
kHz
kHz
kΩ
µs
V
V
337