ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 31
ATmega1284PR231
Manufacturer Part Number
ATmega1284PR231
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT86RF231.pdf
(198 pages)
2.ATMEGA1284PR231.pdf
(380 pages)
3.ATMEGA1284PR231.pdf
(20 pages)
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
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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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