PDF AT86RF212 Data sheet ( Hoja de datos )

Número de pieza	AT86RF212
Descripción	Low Power 700/800/900 MHz Transceiver
Fabricantes	ATMEL Corporation
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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 • Industry Leading Link Budget - Receiver Sensitivity up to -110 dBm - Programmable TX Output Power up to +10 dBm • Low Power Supply Voltage from 1.8 V to 3.6 V - Internal Voltage Regulators and Battery Monitor • Low Current Consumption - SLEEP = 0.2 µA - TRX_OFF = 0.4 mA - RX_ON = 9.2 mA - BUSY_TX = 17 mA at PTX = 5 dBm • Digital Interface - Registers, Frame Buffer, and AES Accessible through SPI - 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 - 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 • 32-pin Low-profile Lead-free Plastic QFN Package, 5.0 x 5.0 x 0.9 mm3 • 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 Low Power 700/800/900 MHz Transceiver for IEEE 802.15.4-2006, IEEE 802.15.4c-2009, Zigbee, 6LoWPAN, and ISM Applications AT86RF212 8168C-MCU Wireless-02/10 1 page AT86RF212 Pin Name 10 DIG2 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Paddle SLP_TR DVSS DVDD DVDD DEVDD DVSS CLKM DVSS SCLK MISO DVSS MOSI /SEL IRQ XTAL2 XTAL1 AVSS EVDD AVDD AVSS AVSS AVSS AVSS Type Digital output Digital input Ground Analog Analog Supply Ground Digital output Ground Digital input Digital output Ground Digital input Digital input Digital output Analog Analog Ground Supply Analog Ground Ground Ground Ground Description 1. General purpose signal (inverted DIG1), see section 9.3 2. Signal IRQ_2 (RX_START) for RX Frame Time Stamping, see section 9.5 If disabled, internally pulled to DVSS Controls sleep, transmit start, and receive states; active high; see section 4.6 Digital ground Regulated 1.8 V internal supply voltage; digital domain; see section 7.5 Regulated 1.8 V internal supply voltage; digital domain; see section 7.5 External supply voltage; digital domain Digital ground Master clock signal output; low if disabled; see section 7.7 Digital ground SPI clock SPI data output (master input slave output) Digital ground SPI data input (master output slave input) SPI select; active low 1. Interrupt request signal; active high or active low; see section 4.7 2. Buffer-level mode indicator; active high Crystal pin, see sections 2.2.1.3 and 7.7 Crystal pin or external clock supply, see sections 2.2.1.3 and 7.7 Analog ground External supply voltage; analog domain Regulated 1.8 V internal supply voltage; analog domain; see section 7.5 Analog ground Analog ground Analog ground Analog ground; exposed paddle of QFN package 2.2.1 Analog and RF Pins 2.2.1.1 Supply and Ground Pins EVDD, DEVDD EVDD and DEVDD are analog and digital supply voltage pins of the AT86RF212 radio transceiver. AVDD, DVDD AVDD and DVDD are outputs of the internal voltage regulators and require bypass capacitors for stable operation. The voltage regulators are controlled independently by the radio transceivers state machine and are activated depending on the current radio transceiver state. The voltage regulators can be configured for external supply; for details, refer to section 7.5. AVSS, DVSS AVSS and DVSS are analog and digital ground pins respectively. 8168C-MCU Wireless-02/10 5 5 Page AT86RF212 as possible to the pins and should have a low-resistance and low-inductance connection to ground to achieve the best performance. The crystal (XTAL), the two load capacitors (CX1, CX2), and the internal circuitry connected to pins XTAL1 and XTAL2 form the crystal oscillator. To achieve the best accuracy and stability of the reference frequency, large parasitic capacitances should be avoided. Crystal lines should be routed as short as possible and not in proximity of digital I/O signals. This is especially required for the High Data Rate Modes; refer to section 7.1.4. Crosstalk from digital signals to the crystal pins or the RF pins can degrade the system performance. Therefore, a low-pass filter (C3, R1) is placed close to the CLKM output pin to reduce the emission of CLKM signal harmonics. This is not needed if the CLKM pin is not used as a microcontroller clock source. In that case, the output should be turned off during device initialization. The ground plane of the application board should be separated into four independent fragments: the analog, the digital, the antenna, and the XTAL ground plane. The exposed paddle shall act as the reference point of the individual grounds. Please note that pins DIG1, DIG2, DIG3, and DIG4 are connected to ground in the Basic Application Schematic; refer to Figure 3-1. Special programming of these pins requires a different schematic; refer to section 3.2. Table 3-1. Exemplary Bill of Materials (BoM) for Basic Application Schematic Symbol Description Value Manufacturer Part Number Comment B1 SMD balun 800 – 1000 MHz Wuerth JTI 748431090 0900BL18B100 F1 SMD low pass filter 902 – 928 MHz Wuerth JTI 748131009 0915LP15A026 B1 + F1 Balun/Filter combination 863 – 928 MHz JTI 0896FB15A0100 779 – 787 MHz JTI 0783FB15A0100 CB1, CB3 CB2, CB4 LDO VREG bypass capacitor 1 μF Power supply bypass capacitor 1 μF AVX Murata 0603YD105KAT2A X5R 10% GRM188R61C105KA12D (0603) 16 V CX1, CX2 Crystal load capacitor 12 pF AVX Murata 06035A120JA COG 5% GRP1886C1H120JA01 (0603) 50 V C1, C2 RF coupling capacitor C3 CLKM low-pass filter capacitor 68 pF 2.2 pF Epcos Epcos AVX AVX Murata B37930 B37920 06035A680JAT2A 06035A229DA GRP1886C1H2R0DA01 COG 5% (0402 or 0603) 50 V COG ±0.5 pF 50 V (0603) R1 XTAL CLKM low-pass filter resistor Crystal 680 Ω CX-4025 16 MHz SX-4025 16 MHz ACAL Taitien Siward XWBBPL-F-1 A207-011 Designed for fCLKM = 1 MHz Designed for fCLKM = 1 MHz 8168C-MCU Wireless-02/10 11 11 Page

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