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Microchip Technology AT86RF212-ZUR
- Part No.:
- AT86RF212-ZUR
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
AT86RF212-ZUR.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,737
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Product details
Overview
AT86RF212-ZUR from Microchip Technology is a low-power, sub-GHz IEEE 802.15.4-2006/2009-compliant transceiver supporting 779–787 MHz (China WPAN), 863–870 MHz (EU SRD), and 902–928 MHz (US ISM) bands with BPSK/O-QPSK modulation, -110 dBm receiver sensitivity, +10 dBm programmable TX output power, and integrated 128-byte FIFO for Zigbee, 6LoWPAN, and industrial wireless sensor networks.
For engineers reviewing the AT86RF212-ZUR datasheet, AT86RF212-ZUR pinout, AT86RF212-ZUR application, or AT86RF212-ZUR equivalent, key selection considerations include its SPI-controlled RF interface, hardware-accelerated AES-128 and MAC functions (CSMA-CA, auto-ACK), differential RF port (RFP/RFN), 32-pin QFN package, and support for both standard-compliant and proprietary high-data-rate O-QPSK modes up to 1000 kbit/s.
Technical Context
The AT86RF212-ZUR integrates analog RF front-end (LNA, PA, PLL, mixer, ADC/DAC), digital baseband processing (BPSK/O-QPSK demodulation, FCS, CCA, RSSI/ED/LQI), and MAC-layer accelerators (CSMA-CA, auto-retransmission, frame filtering) in a single die. Its direct-sequence spread spectrum architecture supports multiple spreading codes and configurable SFD for interoperability across IEEE 802.15.4 variants.
It features dual-domain voltage regulation (AVDD/DVDD at 1.8 V), on-chip 16 MHz crystal oscillator, automatic VCO and filter calibration, and fast-settling PLL enabling frequency hopping. The TRX buffer operates as a unified 128-byte FIFO shared between RX and TX paths, accessed exclusively via SPI with command-byte addressing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Bands | 779–787 MHz (China), 863–870 MHz (EU), 902–928 MHz (US); enables regional regulatory compliance without external band-switching components |
| Data Rates | 20/40 kbit/s (BPSK), 100/250 kbit/s (O-QPSK, IEEE 802.15.4-2006/c), 200–1000 kbit/s (proprietary O-QPSK); supports both legacy and high-throughput mesh networking |
| Receiver Sensitivity | -110 dBm (at 250 kbit/s, O-QPSK); provides extended range in low-noise industrial environments |
| TX Output Power | Programmable up to +10 dBm; allows fine-grained link budget tuning for antenna gain and path loss compensation |
| Supply Voltage | 1.8–3.6 V; compatible with coin-cell and Li-ion battery systems via internal LDOs |
| Current Consumption | 0.2 µA (SLEEP), 9.2 mA (RX_ON), 17 mA (BUSY_TX @ 5 dBm); enables multi-year battery life in duty-cycled sensor nodes |
| Security Engine | AES-128 ECB/CBC hardware accelerator; offloads encryption/decryption from host MCU, preserving real-time MAC timing |
Pinout & Package
32-pin lead-free QFN package (5.0 × 5.0 × 0.9 mm³) with exposed paddle thermally and electrically connected to AVSS. Pin layout optimized for RF isolation: separate analog/digital grounds (AVSS/DVSS), dedicated EVDD/DEVDD supply pins, and differential RF I/O (RFP/RFN) requiring 100 Ω impedance matching.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFP / RFN | Differential RF I/O | Common-mode-rejecting 100 Ω port for bidirectional TX/RX; eliminates need for external antenna switch; DC bias varies by state (0.9 V in TX, 20 mV in RX) |
| /SEL, SCLK, MOSI, MISO | SPI Interface | Standard 4-wire slave SPI (mode 0); supports register, frame buffer, and AES engine access with MSB-first byte protocol |
| SLP_TR | State Control Input | Single-pin control for sleep/wakeup, TX start, and CLKM enable/disable; reduces GPIO count in resource-constrained MCUs |
| IRQ | Interrupt Output | Configurable active-high/low signal indicating frame buffer status, RX_START, or PHY events; supports low-latency MAC response |
| DIG1–DIG4 | GPIO Outputs | Programmable indicators for RX/TX state (DIG3/DIG4), antenna diversity control (DIG1/DIG2), or frame timestamping (DIG2); replace discrete logic in RF front-end designs |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RF Front-End | On-die LNA, PA, PLL loop filter, and TX/RX switch eliminate ≥7 external RF components, reducing BoM cost and layout complexity |
| Hardware MAC Acceleration | Real-time CSMA-CA, auto-ACK, and frame filtering executed in silicon-enables deterministic sub-100 µs response without MCU intervention |
| True Random Number Generator | Dedicated entropy source compliant with NIST SP 800-90A; essential for secure key generation in Zigbee Trust Center and TLS handshakes |
| Configurable Clock Output (CLKM) | Programmable master clock (1–16 MHz) with adjustable drive strength (2–8 mA); serves as MCU system clock or precision MAC timer reference |
| Battery Monitoring | Integrated BATMON pin provides analog voltage monitoring of supply rail; enables autonomous low-battery shutdown in remote sensors |
Applications
| Smart Utility Metering | Industrial Wireless Sensor Network |
|---|---|
Use Scenario: AMI (Advanced Metering Infrastructure) endpoints transmitting gas/water/electricity consumption data over mesh networks in dense urban deployments with multipath interference. IC Role / Device Role / Timing Role: Primary PHY layer transceiver handling IEEE 802.15.4g-compliant sub-GHz communication; manages channel hopping, RSSI-based neighbor discovery, and time-synchronized wake-up scheduling. Use Value: -110 dBm sensitivity ensures reliable reception through concrete walls; programmable +10 dBm TX compensates for long-distance pipe/tank attenuation; AES-128 secures firmware updates against replay attacks. | Use Scenario: Predictive maintenance nodes on rotating machinery monitoring vibration, temperature, and acoustic emissions in factory floors with EMI from motors and drives. IC Role / Device Role / Timing Role: Low-latency wireless telemetry node performing synchronized sampling bursts using hardware timestamping (DIG2 IRQ_2) and frame-level energy detection (ED). Use Value: Fast PLL settling (<100 µs) enables rapid frequency agility to avoid narrowband interference; 0.2 µA SLEEP current extends battery life beyond 10 years; differential RF port rejects common-mode noise from adjacent 48 V DC bus lines. |
| Home Automation Gateway | Zigbee Green Power Device |
Use Scenario: Multi-protocol hub bridging Zigbee 3.0 end devices (lights, locks, thermostats) to cloud services via Ethernet/Wi-Fi, requiring concurrent channel scanning and secure pairing. IC Role / Device Role / Timing Role: Dual-role transceiver operating as coordinator (beacon-enabled PAN) and router; leverages hardware FCS check and auto-frame filtering to reduce host CPU load during high-traffic periods. Use Value: Hardware-accelerated AES-128 CBC mode encrypts all ZCL payloads; 128-byte FIFO buffers fragmented APS frames; O-QPSK 250 kbit/s supports OTA firmware upgrades under 30 seconds. | Use Scenario: Batteryless light switch harvesting energy from mechanical actuation, transmitting single-button press events using ultra-low-duty-cycle Green Power profile. IC Role / Device Role / Timing Role: Energy-harvesting-optimized PHY transceiver entering SLEEP mode (0.2 µA) between events; uses DIG3/DIG4 to trigger external boost converter only during TX burst. Use Value: Sub-µA quiescent current prevents energy drain during storage; TRX_OFF state (0.4 mA) enables <10 ms wake-to-transmit latency; integrated crystal oscillator eliminates external timing component. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sub-GHz transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CC1200RHBT | Wider frequency range (169–950 MHz), higher max TX power (+16 dBm), no integrated AES engine; requires external crypto IC for Zigbee security | Preferred for proprietary protocols needing >1000 kbit/s or longer range in rural LPWAN; unsuitable for standards-compliant Zigbee without added security silicon | Select when raw RF performance outweighs standards compliance and security integration |
| SI4468-B1B-FMR | Higher sensitivity (-133 dBm), integrated packet handler and FEC, but no IEEE 802.15.4 MAC acceleration or hardware AES; larger 40-pin QFN package | Better suited for WMBus, KNX-RF, or custom protocols demanding ultra-long range; lacks Zigbee-certified PHY/MAC stack support out-of-box | Choose for maximum link budget in utility metering where host MCU handles full MAC layer |
Compared with CC1200RHBT and SI4468-B1B-FMR, the AT86RF212-ZUR delivers tighter integration of IEEE 802.15.4-2006/2009 PHY/MAC functions and AES-128 security-reducing host MCU overhead and PCB area-while trading absolute sensitivity and TX power for lower system-level BoM cost and simplified certification.
Availability
AT86RF212-ZUR is available at Aetrix Electronics and suitable for smart utility metering, industrial wireless sensor networks, home automation gateways, and Zigbee Green Power devices requiring stable component supply across multi-year production cycles.
Supply support for AT86RF212-ZUR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and wireless solutions, with broad industrial and automotive qualification portfolios.
The AT86RF212-ZUR belongs to Microchip's IEEE 802.15.4-optimized transceiver product line, designed specifically for ultra-low-power, standards-compliant mesh networking in battery-operated IoT endpoints and infrastructure nodes.
FAQ
What regulatory certifications does the AT86RF212-ZUR support out of the box?
The AT86RF212-ZUR is designed to comply with ETSI EN 300 220-1 (Europe SRD), FCC 47 CFR §15.247 (U.S. ISM), and China's SRRC requirements for 779–787 MHz operation. Its integrated RF front-end, calibrated PLL, and programmable output power simplify regional certification-though final approval requires system-level testing with the host PCB antenna and enclosure. The AT86RF212-ZUR itself carries no pre-certified module ID; it must be integrated into a certified end-product.
Does the AT86RF212-ZUR require an external crystal, and what are the tolerance requirements?
Yes, the AT86RF212-ZUR requires a 16 MHz fundamental-mode crystal connected to XTAL1/XTAL2 pins. Microchip specifies ±10 ppm frequency tolerance and ≤3 pF pin capacitance for stable operation across -40 °C to +85 °C. Load capacitors (CX1/CX2) must be selected per crystal manufacturer's recommendation-typically 12 pF for 16 MHz units-to meet the 12–18 pF total load requirement. Using an external clock instead of a crystal is possible but sacrifices temperature stability and increases jitter.
How does the AT86RF212-ZUR handle antenna switching for diversity configurations?
The AT86RF212-ZUR supports antenna diversity via its DIG3/DIG4 pins, which provide complementary digital outputs indicating RX/TX state. These signals can directly drive external RF switches (e.g., Skyworks SKY13350) to select optimal antennas during receive or transmit. DIG1/DIG2 serve as additional control lines for secondary diversity logic. No internal RF switch is present-the AT86RF212-ZUR relies on this GPIO-driven external switching, eliminating the need for complex analog multiplexers while maintaining full duplex capability.
Can the AT86RF212-ZUR operate without the internal voltage regulators enabled?
Yes-the AT86RF212-ZUR supports direct external supply to DVDD and AVDD pins by configuring register 0x01 (TRX_CTRL_1). When regulators are disabled, DEVDD (pin 15) and EVDD (pin 28) must supply clean 1.8 V ±5% to power the digital and analog domains respectively. This mode reduces conversion losses and improves efficiency in systems with tightly regulated 1.8 V rails, but forfeits the built-in battery monitor (BATMON) and requires careful bypassing (1 µF per regulator pin) to prevent noise coupling into sensitive RF sections.
What is the maximum frame payload size supported by the AT86RF212-ZUR's hardware frame buffer?
The AT86RF212-ZUR features a unified 128-byte TRX buffer used for both transmit and receive operations. After accounting for the 1-byte PHR (PHY header) and mandatory 2-byte FCS, the maximum PSDU (PHY Service Data Unit) payload is 125 bytes. This aligns with IEEE 802.15.4-2006's 127-octet maximum frame length. Frames exceeding this size must be segmented in software; the AT86RF212-ZUR does not support hardware fragmentation or reassembly.
AT86RF212-ZUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4, General ISM < 1GHz
- Protocol:
- 6LoWPAN, Zigbee®
- Modulation:
- DSSS, BPSK, O-QPSK
- Frequency:
- 769MHz ~ 935MHz
- Data Rate (Max):
- 1Mbps
- Power - Output:
- 10dBm
- Sensitivity:
- -110dBm
- Memory Size:
- 128B SRAM
- Serial Interfaces:
- SPI
- GPIO:
- -
- Voltage - Supply:
- 1.8V ~ 3.6V
- Current - Receiving:
- 8.7mA ~ 9.2mA
- Current - Transmitting:
- 13mA ~ 25mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-QFN (5x5)
AT86RF212-ZUR FAQ
1.How can I place an order for AT86RF212-ZUR through Aetrix?
Please submit a Request for Quotation (RFQ) for AT86RF212-ZUR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT86RF212-ZUR reliable?
The price and inventory of AT86RF212-ZUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT86RF212-ZUR is usually 5 days.
3.What payment methods are accepted for AT86RF212-ZUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT86RF212-ZUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT86RF212-ZUR?
AT86RF212-ZUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT86RF212-ZUR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT86RF212-ZUR?
For technical support, including AT86RF212-ZUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT86RF212-ZUR requirements.
6.How does Aetrix verify that AT86RF212-ZUR is sourced from the original manufacturer or authorized distributors?
All AT86RF212-ZUR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT86RF212-ZUR meets industry standards.
7.What is the process for return or replacement of AT86RF212-ZUR?
All AT86RF212-ZUR units undergo pre-shipment inspection (PSI). If there is an issue with AT86RF212-ZUR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT86RF212-ZUR part is unused and in its original packaging.
Return procedure for AT86RF212-ZUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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