The Atmel SAM R21 is a series of low-power System-on-Chips (SoC) featuring a SAM D21 microcontroller and an integrated AT86RF233 2.4GHz ISM-Band transceiver. The Atmel SAM R21 Xplained Pro evaluation kit is intended for prototyping and evaluating the ATSAMR21G18A device. The Atmel SAM R21 Xplained Pro hardware platform kit offers a range of features which provide the user with an understanding of how to integrate the ATSAMR21G18A into a custom design. Atmel’s SAM R21 is supported by the Atmel Studio integrated development platform (IDP). The Xplained Pro MCU series evaluation kit includes an on board embedded debugger. No additional tools are required to programme or debug the ATSAMR21G18A microcontroller. The ATSAMR21-XPRO board is compatible with a ZigBee stack that supports a self-healing, self-organizing mesh network, while optimizing network traffic and minimizing power consumption.

Features & Benefits of the ATSAMR21 Xplained Pro Development Board
•ATSAMR21G18A Cortex-M0+ core SoC with 256KB Flash memory, 32KB SRAM and 2.4GHz AT86RF233 transceiver
•RF Output Power: Up to +4dBm
•Receiver Sensitivity: -99dBm
•Modulation: O-QPSK
•OTA data rate: 256kbps
•Hardware Assisted MAC (Auto-Acknowledge, Auto-Retry)
•SFD-Detection, Spreading/De-Spreading, Framing, CRC-16 Computation
•Antenna Diversity and Tx/Rx Control
•128byte Tx/Rx Frame Buffer
•AES-128 encryption
•Embedded debugger (EDBG)
•Programming and debugging on board SAM R21 through Serial Wire Debug (SWD)
•Virtual COM-port interface to target via UART
•Atmel Data Gateway Interface (DGI) to target via SPI and I2C
•4 x GPIO connected to target for code instrumentation
•Reset pushbutton
•User pushbutton
•User LED
•2 x Xplained Pro Extension header
•Power supply: +5Vdc via external connector or either USB connection
•Header for monitoring current consumption
•Embedded debugger microUSB connector
•Target microUSB connector
Ceramic chip antenna
•SMA connector for external antenna
•Applications: Industrial Control, Residential and commercial automation, Health care, Consumer electronics, PC peripherals and local communication for the Internet of Things (IoT) using IEEE 802.15.4 or ZigBee protocols.

AT86RF233 Transceiver chip: RS Part Mo. 769-2687