AT86RF231-ZF Atmel, AT86RF231-ZF Datasheet - Page 28
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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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Figure 6-15. Sleep and Wake-up Initiated by Asynchronous Microcontroller Timer
Figure 6-16. Wake-Up Initiated by Radio Transceiver Interrupt
8111C–MCU Wireless–09/09
CLKM
SLP_TR
IRQ
CLKM
SLP_TR
Note: Timing figure t
RX_ON and RX_AACK_ON states
For synchronous systems, where CLKM is used as a microcontroller clock source and the SPI
master clock (SCLK) is directly derived from CLKM, the AT86RF231 supports an additional
power-down mode for receive operating states (RX_ON and RX_AACK_ON).
If an incoming frame is expected and no other applications are running on the microcontroller, it
can be powered down without missing incoming frames.
This can be achieved by a rising edge on pin SLP_TR that turns off the CLKM. Then the radio
transceiver state changes from RX_ON or RX_AACK_ON (Extended Operating Mode) to
RX_ON_NOCLK or RX_AACK_ON_NOCLK respectively.
In case that a frame is received (e.g. indicated by an IRQ_2 (RX_START) interrupt) the clock
output CLKM is automatically switched on again.
This scenario is shown in
switched off after 35 clock cycles when setting the pin SLP_TR = H.
The CLKM clock frequency settings for 250 kHz and 62.5 kHz are not intended to directly clock
the microcontroller. When using these clock rates, CLKM is turned off immediately when enter-
ing RX_ON_NOCLK and RX_AACK_ON_NOCLK respectively.
In states RX_(AACK)_ON_NOCLK and RX_(AACK)_ON, the radio transceiver current con-
sumptions are equivalent. However, the RX_(AACK)_ON_NOCLK current consumption is
reduced by the current required for driving pin 17 (CLKM).
35 CLKM clock cycles
35 CLKM clock cycles
TR15
refer to section
Figure 6-16 on page
radio transceiver
IRQ issued
Table 7-1 on page
CLKM off
CLKM off
28. In RX_ON state, the clock at pin 17 (CLKM) is
typ. 5 µs
42.
t
TR15
async timer elapses
(microcontroller)
AT86RF231
28
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