Atmel AT86RF233单片2.4GHz无线收发解决方案

ion the RF performance can further be improved by using an external RF front-end or Antenna Diversity. Both operation modes are supported by the AT86RF233 with dedicated control pins without the interaction of the microcontroller.

AT86RF233主要特性:

• High Performance RF-CMOS 2.4GHz radio transceiver targeted for IEEE® 802.15.4, ZigBee®, RF4CE,6LoWPAN, and ISM applications

• Industry leading link budget:

- Receiver sensitivity -101dBm

- Programmable output power from -17dBm up to +4dBm

• Ultra-low current consumption:

- DEEP_SLEEP = 0.02μA

- TRX_OFF = 300μA

- RX_ON = 11.8mA (LISTEN w/o Smart Receiving)

- RX_ON = 6.0mA (LISTEN w/ Smart Receiving)

- BUSY_TX = 13.8mA (at max. transmit power)

• Ultra-low supply voltage (1.8V to 3.6V) with internal regulator

• Support for coin cell operation

• Optimized for low BoM Cost and ease of production:

- Few external components necessary (crystal, capacitors and antenna)

• Easy to use interface:

- Registers, frame buffer and AES accessible through fast SPI

- Only two microcontroller GPIO lines necessary

- One interrupt pin from radio transceiver

- Clock output with prescaler from radio transceiver

• Radio transceiver features:

- 128-byte FIFO (SRAM) for data buffering

- Fully integrated, fast settling PLL to support Frequency Hopping

- Supports 500kHz channel spacing

- Battery monitor

- Fast Wake-Up Time 0.4msec

• Special IEEE 802.15.4™-2011 hardware support:

- FCS computation and Clear Channel Assessment

- RSSI measurement, Energy Detection and Link Quality Indication

• MAC hardware accelerator:

- Automated acknowledgement, CSMA-CA and retransmission

- Automatic address filtering

- Automated FCS check

• Extended feature set hardware support:

- AES 128-bit hardware accelerator

- Antenna Diversity and RX/TX indication

- Supported PSDU data rates: 250kb/s, 500kb/s, 1000kb/s and 2000kb/s

- True Random Number Generation for security application

- Reduced Power Consumption modes (patent pending)

• Industrial temperature range:

- -40℃ to +85℃

• I/O and packages:

- 32-pin Low-Profile QFN Package 5 x 5 x 0.9mm³

- RoHS/Fully Green

• Compliant to IEEE 802.15.4-2003/2006/2011

• Compliant to EN 300 328/440, FCC-CFR-47 Part 15, ARIB STD-66, RSS-210

图1.AT86RF233方框图

图2.AT86RF233基本应用电路图

图3.AT86RF233扩展特性应用电路图

评估板REB233SMAD

This manual describes the REB233SMAD radio extender board supporting antenna diversity in combination with the Atmel AT86RF233 radio transceiver.

Detailed information is given in the individual sections about the board functionality, the board interfaces, and the board design.

The REB233SMAD connects directly to the REB controller base board (REB-CBB),

or can be used as an RF interface in combination with one of the Atmel microcontroller development platforms. The REB233SMAD together with a microcontroller forms a fully functional wireless node.

The REB233SMAD-EK demonstrates the unique performance and rich feature set of the 2.4GHz RF transceiver AT86RF233 combined with the leading edge ATxmega256A3 microcontroller. The REB233SMAD-EK contains two sets of Radio Extender Board(REB), Controller Base Board (REB-CBB) and USB cable to enable PC connectivity.

The REB is assembled with an AT86RF233 and two SMA antennas, demonstrating the unrivaled hardware based Antenna Diversity feature to improve radio link robustness in adverse RF environments. The REB connected to the REB-CBB forms a fully functional, battery powered wireless node.

The kit is supported by Atmel BitCloud stack - a ZigBee PRO certified platform - an