ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 96
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
Table 8-9.
Note:
It is recommended to perform CCA measurements in RX_ON state only. To avoid switching
accidentally to BUSY_RX state the SHR detection can be disabled by setting register bit
RX_PDT_DIS (register 0x15, RX_SYN), refer to
receiver remains in RX_ON state to perform a CCA measurement until the register bit
RX_PDT_DIS is set back to continue the frame reception. In this case the CCA measurement
duration is 8 symbol periods.
3
0
1. After receiving the SHR an automated ED measurement is started with a length of 8 symbol
periods (PSDU rate 250 kb/s), refer to
automated ED measurement must be finished to provide a result for the CCA measurement.
Only one automated ED measurement per frame is performed.
CCA Measurement Period and Access in BUSY_RX state
Carrier sense with Energy above threshold (AND).
CCA result is available after finishing
automated ED measurement period.
Carrier sense with Energy above threshold (OR).
CCA result is available after finishing
automated ED measurement period
Section 8.4 “Energy Detection (ED)” on page
Section 9.1 “Receiver (RX)” on page
CCA result is immediately available after
request.
CCA result is immediately available after
request.
AT86RF231
101. The
91. This
96
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