ATmega644PR231 Atmel Corporation, ATmega644PR231 Datasheet - Page 151

• 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

11.6.2
8111C–MCU Wireless–09/09
Bit
+0x04
Read/Write
Reset Value
Register Description
PA_EXT_EN
R/W
7
0
IRQ_2_EXT_EN
R/W
6
0
Register 0x04 (TRX_CTRL_1):
Register 0x04 (TRX_CTRL_1) is a multi purpose register to control various operating modes and
settings of the radio transceiver.
• Bit 7 - PA_EXT_EN
Refer to
• Bit 6 - IRQ_2_EXT_EN
If this register bit is set the RX Frame Time Stamping Mode is enabled. An incoming frame with
a valid PHR is signaled via pin 10 (DIG2). The pin remains at high level until the end of the frame
receive procedure, see
Do not enable RX Frame Time Stamping (IRQ_2_EXT_EN = 1) and Antenna Diversity
(ANT_EXT_SW_EN = 1) at the same time, see
• Bit 5 - TX_AUTO_CRC_ON
Refer to
• Bit 4 - RX_BL_CTRL
Refer to
• Bit [3:2] - SPI_CMD_MODE
Refer to
• Bit 1 - IRQ_MASK_MODE
Refer to
• Bit 0 - IRQ_POLARITY
Refer to
TX_AUTO_CRC_ON
Section 11.5 “RX/TX Indicator” on page
Section 8.2 “Frame Check Sequence (FCS)” on page
Section 11.7 “Frame Buffer Empty Indicator” on page
Section 6.3 “Radio Transceiver Status information” on page
Section 6.6 “Interrupt Logic” on page
Section 6.6 “Interrupt Logic” on page
R/W
5
1
RX_BL_CTRL
Figure 11-12 on page
R/W
4
0
3
SPI_CMD_MODE
R/W
0
150.
29.
29.
Section 11.4 “Antenna Diversity” on page
147.
2
IRQ_MASK_MODE
152.
85.
R/W
1
0
24.
IRQ_POLARITY
AT86RF231
R/W
0
0
TRX_CTRL_1
142.
151