Features Fully Integrated 700/800/900 MHz-Band Transceiver - Chinese WPAN Band from 779 to 787 MHz - European SRD Band from 863 to 870 MHz - North American ISM Band from 902 to 928 MHz Direct Sequence Spread Spectrum with Different Modulation Schemes and Data Rates - BPSK with 20 and 40 kbit/s, compliant to IEEE 802.15.4-2003/2006 - O-QPSK with 100 and 250 kbit/s, compliant to IEEE 802.15.4-2006 - O-QPSK with 250 kbit/s, compliant to IEEE 802.15.4c-2009 - O-QPSK with 200, 400, 500, and 1000 kbit/s PSDU Data Rate Flexible Combination of Frequency Bands and Data Rates Low Power Industry Leading Link Budget 700/800/900 MHz - Receiver Sensitivity up to -110 dBm - Programmable TX Output Power up to +10 dBm Transceiver for Low Power Supply Voltage from 1.8 V to 3.6 V - Internal Voltage Regulators and Battery Monitor IEEE 802.15.4-2006, Low Current Consumption - SLEEP = 0.2 A IEEE 802.15.4c-2009, - TRX OFF = 0.4 mA Zigbee, - RX ON = 9.2 mA - BUSY TX = 17 mA at P = 5 dBm TX 6LoWPAN, and Digital Interface - Registers, Frame Buffer, and AES Accessible through SPI ISM Applications - Clock Output with Configurable Rate Radio Transceiver Features - Adjustable Receiver Sensitivity - Integrated TX/RX Switch, LNA, and PLL Loop Filter - Fast Settling PLL Supporting Frequency Hopping AT86RF212 - Automatic VCO and Filter Calibration - Integrated 16 MHz Crystal Oscillator - 128 byte FIFO for Transmit/Receive IEEE 802.15.4-2006 Hardware Support - FCS Computation and Check - Clear Channel Assessment - Received Signal Strength Indicator, Energy Detection, and Link Quality Indication MAC Hardware Accelerator - Automatic Acknowledgement and Retransmission - CSMA-CA and Listen before Talk - Automatic Frame Filtering AES 128 bit Hardware Accelerator (ECB and CBC modes) Extended Feature Set Hardware Support - True Random Number Generation for Security Applications - TX/RX Indication for External RF Front End Control - Configurable SFD Optimized for Low BoM Cost and Ease of Production - Low External Component Count: Antenna, Reference Crystal, and Bypass Capacitors - Excellent ESD Robustness Industrial Temperature Range from -40 C to +85 C 3 32-pin Low-profile Lead-free Plastic QFN Package, 5.0 x 5.0 x 0.9 mm Compliant to IEEE 802.15.4-2003, IEEE 802.15.4-2006, IEEE 802.15.4c-2009, ETSI EN 300 220-1, and FCC 47 CFR Section 15.247 8168C-MCU Wireless-02/10 1 Overview The AT86RF212 is a low-power, low-voltage 700/800/900 MHz transceiver specially designed for the IEEE Standard 802.15.4, ZigBee, 6LoWPAN, and high data rate ISM applications. For the sub-1 GHz bands, it supports low data rates (20 and 40 kbit/s) of the IEEE Standard 802.15.4-2003/2006 1, 2 and provides optional data rates (100 and 250 kbit/s) using O-QPSK, according to the IEEE Standard 802.15.4-2006 1 and the respective IEEE 802.15.4c-2009 Amendment 3 . Furthermore, proprietary High Data Rate Modes up to 1000 kbit/s can be employed. The AT86RF212 is a true SPI-to-antenna solution. RF-critical components except the antenna, crystal, and de-coupling capacitors are integrated on-chip. MAC and AES hardware accelerators improve overall system power efficiency and timing. 1.1 General Circuit Description The AT86RF212 single-chip RF transceiver provides a complete radio interface between the antenna and the microcontroller. It comprises the analog radio part, digital modulation and demodulation, including time and frequency synchronization, as well as data buffering. A single 128 byte TRX buffer stores receive or transmit data. Communication between transmitter and receiver is based on direct sequence spread spectrum with different modulation schemes and spreading codes. The number of external components is minimized so that only the antenna, a filter (at high output power levels), the crystal, and four bypass capacitors are required. The bidirectional differential antenna pins are used in common for RX and TX, i.e. no external antenna switch is needed. Control of an external power amplifier is supported by two digital control signals (differential operation). The AT86RF212 supports the IEEE 802.15.4-2006 standard mandatory BPSK modulation and optional O-QPSK modulation in the 868.3 MHz and 915 MHz bands. In addition, it supports the O-QPSK modulation defined in IEEE 802.15.4c-2009 for the Chinese 780 MHz band. For applications not necessarily targeting IEEE compliant networks, the radio transceiver supports proprietary High Data Rate Modes based on O-QPSK. The AT86RF212 features hardware supported 128 bit security operation. The standalone AES encryption/decryption engine can be accessed in parallel to all PHY operational modes. Configuration of the AT86RF212, reading and writing of data memory, as well as the AES hardware engine are controlled by the SPI interface and additional control signals. On-chip low-dropout voltage regulators provide the analog and digital 1.8 V power supply. Control registers retain their settings in sleep mode when the regulators are turned off. The RX and TX signal processing paths are highly integrated and optimized for low power consumption. The transceiver block diagram is shown in Figure 1-1. 2 AT86RF212 8168C-MCU Wireless-02/10