AT86RF231-ZU Atmel, AT86RF231-ZU Datasheet - Page 64

• Manufacturer Part Number: AT86RF231-ZU
• Description: IC TXRX ZIGBE/802.15.4/ISM 32QFN
• Manufacturer: Atmel

Specifications of AT86RF231-ZU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee, 6LoWPAN, RF4CE, SP100, WirelessHART™, ISM
• Applications: Industrial Monitoring and Control, Wireless Alarm and Security Systems
• Power - Output: -17dBm ~ 3dBm
• Sensitivity: -101dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.3mA
• Current - Transmitting: 14mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 2405 MHz to 2480 MHz
• Interface Type: SPI
• Noise Figure: 6 dB
• Output Power: 20 dB
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 12.3 mA
• Minimum Operating Temperature: - 40 C
• Modulation: OQPSK
• Protocol Supported: 802.15.4
• Transmitting Current: 11.6mA
• Data Rate: 2Mbps
• Frequency Range: 2.405GHz To 2.48GHz
• Modulation Type: O-QPSK
• Sensitivity Dbm: -101dBm
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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