ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 103

• Manufacturer Part Number: ATmega1284PR231
• Manufacturer: Atmel Corporation

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

9.1.4
8111C–MCU Wireless–09/09
Bit
+0x15
Read/Write
Reset Value
Register Description
RX_PDT_DIS
R/W
7
0
Register 0x15 (RX_SYN):
This register controls the sensitivity threshold of the receiver.
• Bit 7 - RX_PDT_DIS
RX_PDT_DIS = 1 prevents the reception of a frame even if the radio transceiver is in receive
modes. An ongoing frame reception is not affected. This operation mode is independent of the
setting of register bits RX_PDT_LEVEL.
• Bit [6:4] - Reserved
• Bit [3:0] - RX_ PDT_LEVEL
These register bits desensitize the receiver such that frames with an RSSI level below the
RX_PDT_LEVEL threshold level (if RX_PDT_LEVEL > 0) are not received. The threshold level
can be calculated according to the following formula:
RX_THRES = RSSI_BASE_VAL + 3 * (RX_PDT_LEVEL -1), for RX_PDT_LEVEL > 0
Examples for certain register settings are given in
Table 9-1.
If register bits RX_PDT_LEVEL > 0 the current consumption of the receiver in states RX_ON
and RX_AACK_ON is reduced by 500 µA, refer to
cations” on page 161
If register bits RX_PDT_LEVEL = 0 (reset value) all frames with a valid SHR and PHR are
received, independently of their signal strength.
6
R
0
Value [Register]
0xE
0x0
0x1
0xF
Reserved
...
Receiver Desensitization Threshold Level - RX_PDT_LEVEL
5
R
0
parameter 12.8.4.
4
R
0
≤ RSSI_BASE_VAL (reset value)
> RSSI_BASE_VAL + 0 * 3
> RSSI_BASE_VAL + 13 * 3
> RSSI_BASE_VAL + 14 * 3
RX Input Threshold Level
R/W
3
0
Table 9-1 on page 103
R/W
2
Section 12.8 “Current Consumption Specifi-
0
RX_PDT_LEVEL
R/W
1
0
RSSI value not considered
AT86RF231
Value [dBm]
R/W
0
> -90
> -51
> -48
0
RX_SYN
103