ATmega644PR231 Atmel Corporation, ATmega644PR231 Datasheet - Page 46

• Manufacturer Part Number: ATmega644PR231
• Manufacturer: Atmel Corporation

Specifications of ATmega644PR231

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Max I/o Pins: 32
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• 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: 2.4 GHz
• Max Data Rate (mb/s): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

8111C–MCU Wireless–09/09
Bit
+0x02
Read/Write
Reset Value
7
R
0
TRAC_STATUS
Register 0x02 (TRX_STATE):
The radio transceiver states are controlled via register bits TRX_CMD, which receives the state
transition commands.
This register is used for Basic and Extended Operating Mode, refer to
Operating Mode” on page
• Bit [7:5] - TRAC_STATUS
Refer to
• Bit [4:0] - TRX_CMD
A write access to register bits TRX_CMD initiate a radio transceiver state transition towards the
new state as defined by the write access:
Table 7-4.
Notes:
Register Bit
TRX_CMD
6
R
0
1. FORCE_PLL_ON is not valid for states SLEEP, P_ON, RESET, TRX_OFF, and all *_NOCLK
2. Extended Operating Mode only, refers to
Section 7.2.7 “Register Description - Control Registers” on page
states, as well as STATE_TRANSITION_IN_PROGRESS towards these states.
ters” on page
State Control Command, Register Bits TRX_CMD
5
R
0
68.
47.
R/W
4
0
0x04
0x16
0x19
Value
0x00
0x02
0x03
0x06
0x08
0x09
(1)
(2)
(2)
R/W
3
State Description
NOP
TX_START
FORCE_TRX_OFF
FORCE_PLL_ON
RX_ON
TRX_OFF (CLK Mode)
PLL_ON (TX_ON)
RX_AACK_ON
TX_ARET_ON
All other values are reserved and mapped to NOP
0
Section 7.2.7 “Register Description - Control Regis-
TRX_CMD
R/W
2
0
R/W
1
0
Section 7.2 “Extended
68.
AT86RF231
R/W
0
0
TRX_STATE
46