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Atmel 公司的AT86RF212是低功耗低電壓700/800/900 MHz 收發(fā)器,特別設(shè)計(jì)用于IEEE Standard 802.15.4, ZigBee, 6LoWPAN以及高數(shù)據(jù)速率ISM應(yīng)用. AT86RF212單片RF收發(fā)器提供了天線和微控制器間完整接口,包括有模擬無線電部分,包括時(shí)間和頻率同步的數(shù)字調(diào)制和解調(diào), 以及數(shù)據(jù)緩沖功能.接收靈敏度高達(dá)-110dBm,可編程TX輸出功率高達(dá)+10dBm,工作電壓從1.8V到3.6V,內(nèi)部有電壓穩(wěn)壓器和電池監(jiān)視器,工作溫度-40度C到85度C.本文介紹了AT86RF212的主要特性和方框圖,以及基本應(yīng)用電路圖和所用的材料清單.此外還介紹了擴(kuò)展特性應(yīng)用電路圖.
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 [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 P802.15.4c Draft 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.
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. 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 receiver path is based on a low-IF architecture. After channel filtering and downconversion the low-IF signal is sampled and applied to the digital signal processing part. Communication between transmitter and receiver is based on direct sequence spread spectrum with different modulation schemes and spreading codes. 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 P802.15.4c 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. A single 128 byte TRX buffer stores receive or transmit data. 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.
AT86RF212主要特性:
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 802.15.4-2006
O-QPSK with 100 and 250 kbit/s, compliant to IEEE 802.15.4-2006
O-QPSK with 250 kbit/s, compliant to IEEE P802.15.4c
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 = 9.0 mA
BUSY_TX = 18 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 LBT
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 (External RF Front End Control)
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 P802.15.4c, ETSI EN 300 220-1, and FCC 47 CFR Section 15.247
圖1.AT86RF212 方框圖
圖2.AT86RF212基本應(yīng)用電路圖
基本應(yīng)用電路圖中的材料清單(BOM):
圖3. AT86RF212擴(kuò)展特性應(yīng)用電路圖
詳情請見:
http://www.atmel.com/dyn/resources/prod_documents/doc8168.pdf
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 [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 P802.15.4c Draft 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.
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. 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 receiver path is based on a low-IF architecture. After channel filtering and downconversion the low-IF signal is sampled and applied to the digital signal processing part. Communication between transmitter and receiver is based on direct sequence spread spectrum with different modulation schemes and spreading codes. 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 P802.15.4c 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. A single 128 byte TRX buffer stores receive or transmit data. 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.
AT86RF212主要特性:
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 802.15.4-2006
O-QPSK with 100 and 250 kbit/s, compliant to IEEE 802.15.4-2006
O-QPSK with 250 kbit/s, compliant to IEEE P802.15.4c
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 = 9.0 mA
BUSY_TX = 18 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 LBT
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 (External RF Front End Control)
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 P802.15.4c, ETSI EN 300 220-1, and FCC 47 CFR Section 15.247
圖1.AT86RF212 方框圖
圖2.AT86RF212基本應(yīng)用電路圖
基本應(yīng)用電路圖中的材料清單(BOM):
圖3. AT86RF212擴(kuò)展特性應(yīng)用電路圖
詳情請見:
http://www.atmel.com/dyn/resources/prod_documents/doc8168.pdf
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