ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 103
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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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
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