ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 31

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ATmega1284PR231

Manufacturer Part Number
ATmega1284PR231
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega1284PR231

Flash (kbytes)
128 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)
16
Eeprom (bytes)
4096
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
+0x04
Read/Write
Reset Value
PA_EXT_EN
R/W
7
0
IRQ_2_EXT_EN
R/W
Register 0x04 (TRX_CTRL_1):
The TRX_CTRL_1 register 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
The timing of a received frame can be determined by a separate pin. If register bit
IRQ_2_EXT_EN is set to 1, the reception of a PHR is directly issued on pin 10 (DIG2), similar to
interrupt IRQ_2 (RX_START). Note that this pin is also active even if the corresponding interrupt
event IRQ_2 (RX_START) mask bit in register 0x0E (IRQ_MASK) is set to 0. The pin remains at
high level until the end of the frame receive procedure.
For further details refer to
• 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
The AT86RF231 supports polling of interrupt events. Interrupt polling can be enabled by register
bit IRQ_MASK_MODE. Even if an interrupt request is masked by the corresponding bit in regis-
ter 0x0E (IRQ_MASK), the event is indicated in register 0x0F (IRQ_STATUS).
Table 6-10.
6
0
Register Bit
IRQ_MASK_MODE
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
R/W
5
1
Interrupt Polling Configuration
RX_BL_CTRL
Section 11.6 “RX Frame Time Stamping” on page
R/W
4
0
Value
0
1
R/W
3
0
Description
Interrupt polling disabled
Interrupt polling enabled
SPI_CMD_MODE
147.
R/W
2
0
IRQ_MASK_MODE
152.
85.
R/W
1
0
24.
IRQ_POLARITY
AT86RF231
150.
R/W
0
0
TRX_CTRL_1
31

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