AT86RF230-ZUR Atmel, AT86RF230-ZUR Datasheet - Page 90
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AT86RF230-ZUR
Manufacturer Part Number
AT86RF230-ZUR
Description
TXRX LOW POWER 2.4GHZ 32VQFN
Manufacturer
Atmel
Datasheet
1.AT86RF230-ZU.pdf
(98 pages)
Specifications of AT86RF230-ZUR
Frequency
2.4GHz
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
15.5mA
Current - Transmitting
16.5mA
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
1.8 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Maximum Supply Current
16.5 mA
Minimum Operating Temperature
- 40 C
Modulation
OQPSK
Protocol Supported
802.15.4
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Operating Supply Voltage (min)
1.8V
Operating Supply Voltage (typ)
3V
Operating Supply Voltage (max)
3.6V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Data Rate - Maximum
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT86RF230-ZUR
Manufacturer:
ATMEL
Quantity:
1 000
90
AT86RF230
4. Sensitivity to continuous wave interferers
5. TRX_END_IRQ occurs sometimes too late in TX_ARET_ON state
6. TX_ARET ACK wait time too short
7. CCA Request is not executed
This behavior can be observed, if the procedure TX_ARET performs frame
retransmissions.
Fix/Workaround
Set register bit MAX_FRAME_RETRIES = 0 (register 0x2C) and implement frame
retries by software. A frame retransmission does not require downloading the frame
again, only TX_START command is necessary.
The maximum number of symbols waiting for an acknowledgment frame should be
54 symbols as defined in IEEE 802.15.4-2003. The implemented waiting time is
46 symbols.
Fix/Workaround
None
A requested CCA may be rejected without execution. In this case the CCA_DONE bit
indicates “CCA calculation in progress” even though the calculation must be finished
already.
Fix/Workaround
The TRX_STATUS is RX_ON. To initiate a CCA request, switch to PLL_ON state
and back to RX_ON state. Immediately after the state change initiate a CCA request.
It is not necessary to confirm the state changes.
Switching to RX_ON is not executed during BUSY_TX_ARET but immediately after
BUSY_TX_ARET has completed. This enables the receiver to receive a frame which
arrives shortly before the end of the ACK wait period. In this case TRAC_STATUS is
not accidentally set to SUCCESS and is still correct (NO_ACK), as long as the frame
is received. That means the software has additional time to read the
TRAC_STATUS.
Using the workaround mentioned above, the failure occurrence is considerably
reduced. A wrong TRAC_STATUS can still be observed, but very seldom (one of
million transmissions).
Due to the high receiver sensitivity continuous wave interferers may cause
RX_START interrupts. This may result in missed frames since the receiver is kept
busy detecting preambles and SFD. One cause of continuous wave interferers may
be due to crosstalk from clock.
Fix/Workaround
For further details see application note AVR2005 "Design Considerations for the
AT86RF230".
o
o
o
o
o
set TRX_CMD = RX_ON
wait for TRX_END IRQ
read TRAC_STATUS
set TRX_CMD = TX_ARET_ON
poll for TRX_STATUS == TX_ARET_ON
5131E-MCU Wireless-02/09