AT86RF231-ZF Atmel, AT86RF231-ZF Datasheet - Page 18
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AT86RF231-ZF
Manufacturer Part Number
AT86RF231-ZF
Description
TXRX LOW POWER 2.4GHZ 32VQFN
Manufacturer
Atmel
Datasheet
1.AT86RF231-ZUR.pdf
(198 pages)
Specifications of AT86RF231-ZF
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
1.8 V to 3.6 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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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AT86RF231
The SPI is based on a byte-oriented protocol and is always a bidirectional communication
between master and slave. The SPI master starts the transfer by asserting /SEL = L. Then the
master generates eight SPI clock cycles to transfer one byte to the radio transceiver (via MOSI).
At the same time, the slave transmits one byte to the master (via MISO). When the master wants
to receive one byte of data from the slave it must also transmit one byte to the slave. All bytes
are transferred with MSB first. An SPI transaction is finished by releasing /SEL = H.
An SPI register access consists of two bytes, a Frame Buffer or SRAM access of at least two or
more bytes as described in
Section 6.2 “SPI Protocol” on page
19.
/SEL = L enables the MISO output driver of the AT86RF231. The MSB of MISO is valid after t1
(see
Section 12.4 “Digital Interface Timing Characteristics” on page 157
parameter 12.4.3) and
is updated at each falling edge of SCLK. If the driver is disabled, there is no internal pull-up cir-
cuitry connected to it. Driving the appropriate signal level must be ensured by the master device
or an external pull-up resistor. Note, when both /SEL and /RST are active, the MISO output
driver is also enabled.
Referring to
Figure 6-2 on page 17
and
Figure 6-3 on page 17
MOSI is sampled at the rising
edge of the SCLK signal and the output is set at the falling edge of SCLK. The signal must be
stable before and after the rising edge of SCLK as specified by t
and t
, refer to
Section 12.4
3
4
“Digital Interface Timing Characteristics” on page 157
parameters 12.4.5 and 12.4.6.
This SPI operational mode is commonly known as "SPI mode 0".
18
8111C–MCU Wireless–09/09
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