ATmega644R212 Atmel Corporation, ATmega644R212 Datasheet - Page 135

• 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
+0x83
Read/Write
Reset Value
AES_REQUEST
7
W
0
• Bits 3 - AES_DIR
This register bit sets the AES operation direction, either encryption or decryption.
Table 11-7.
• Bit [2:0] - Reserved
Register 0x94 (AES_CTRL_MIRROR):
Register 0x94 is a mirrored version of register 0x83 (AES_CTRL), for details refer to register
0x83 (AES_CTRL).
This register could be used to start a security operation within a single SRAM access by append-
ing it to the data stream and setting register bit AES_REQUEST = 1.
Register Bit
AES_DIR
R/W
6
0
AES Direction
AES_MODE
R/W
5
0
Value
0
1
Description
AES encryption (ECB, CBC)
AES decryption
R/W
4
0
AES_DIR
R/W
3
0
2
R
0
Reserved
1
R
0
AT86RF231
0
R
0
AES_CTRL
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