ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 64
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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7.2.4
8111C–MCU Wireless–09/09
TX_ARET_ON - Transmit with Automatic Retry and CSMA-CA Retry
Figure 7-12. Flow Diagram of TX_ARET
(see Note 1)
N
TRX_STATE = BUSY_TX_ARET
N
N
TRX_STATE = TX_ARET_ON
TRAC_STATUS = INVALID
frame_rctr = frame_rctr + 1
csma_rctr = csma_rctr + 1
MAX_FRAME_RETRIES
MAX_CSMA_RETRIES
TRAC_STATUS =
Random Back-Off
Transmit Frame
ACK requested
frame_rctr = 0
csma_rctr = 0
Receive ACK
until timeout
frame_rctr >
ACK valid
NO_ACK
Start TX
Result
CCA
CCA
<7
Success
Y
Y
Y
Y
N
Y
Failure
N
N
Y
SUCCESS_DATA_PENDING
Note 1: If MAX_CSMA_RETRIES = 7 no retry is
TRAC_STATUS =
Data Pending
performed
Issue IRQ_3 (TRX_END) interrupt
MAX_CSMA_RETRIES
TRX_STATE = TX_ARET_ON
Y
csma_rctr >
N
N
TRAC_STATUS =
SUCCESS
Y
CHANNEL_ACCESS_FAILURE
AT86RF231
TRAC_STATUS =
64
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