Microchip Technology AT86RF230-ZUR

Overview

AT86RF230-ZUR from Microchip Technology (acquired Atmel) is a 2.4 GHz IEEE 802.15.4-compliant RF transceiver IC for ZigBee, 6LoWPAN, and RF4CE systems. It integrates differential RF front-end, fractional-N PLL, 128-byte frame buffer, on-chip LDO regulators, and hardware-accelerated CSMA-CA, FCS, and address filtering - enabling direct SPI-to-antenna connectivity in ultra-low-power sensor nodes and industrial wireless HART/SP100 devices.

For engineers reviewing the AT86RF230-ZUR datasheet, AT86RF230-ZUR pinout, AT86RF230-ZUR application, or AT86RF230-ZUR equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in wireless sensor networks and industrial automation, and two confirmed alternative transceivers with documented functional and interface differences.

Technical Context

The AT86RF230-ZUR implements an O-QPSK modulator with half-sine pulse shaping and 32-length block coding per IEEE 802.15.4-2003. Its analog front-end features a differential 100 Ω RF port (RFP/RFN), integrated TX/RX switch, and low-noise amplifier with RSSI output at 3 dB granularity.

Digital baseband includes dedicated hardware for Clear Channel Assessment, Energy Detection, automatic frame retransmission, and ACK generation. The SPI slave interface supports up to 8 MHz synchronous operation using CLKM as master clock, with register, frame buffer, and SRAM access modes enabled via command-byte protocol.

Key Specifications

Pinout & Package

AT86RF230-ZUR is housed in a 32-pin, 5 mm × 5 mm, 0.5 mm pitch QFN package with exposed thermal paddle electrically connected to AVSS. The package supports reflow soldering and requires separate analog/digital ground planes per AVR2005 design guidelines.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2.4 GHz IEEE 802.15.4 transceiver applications.

Compared with CC2530F256 and EFR32MG12P332F1024GL125, the AT86RF230-ZUR offers the lowest system-level BoM cost and smallest PCB footprint for pure 2.4 GHz IEEE 802.15.4 PHY-only designs, with best-in-class 20 nA sleep current and minimal external component count.

Availability

AT86RF230-ZUR is available at Aetrix Electronics and suitable for wireless sensor networks, industrial process automation, home/building automation, and RF4CE remote control applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.

Supply support for AT86RF230-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 acquired Atmel in 2016 and maintains full product support, documentation, and qualification for legacy Atmel RF ICs including the AT86RF230 series.

The AT86RF230-ZUR belongs to Microchip's IEEE 802.15.4 transceiver product line, engineered specifically for ultra-low-power, cost-sensitive, standards-compliant wireless sensor and control endpoints in industrial and IoT applications.

FAQ

What is the maximum SPI clock frequency supported by the AT86RF230-ZUR?

The AT86RF230-ZUR supports up to 8 MHz SPI clock frequency in synchronous mode when CLKM is used as the master clock source. In asynchronous mode (SCLK generated by host MCU), the maximum allowed frequency is 7.5 MHz. Exceeding these limits risks register access corruption or frame buffer misalignment during high-speed transfers.

Does the AT86RF230-ZUR require an external crystal, and what are the key layout requirements?

Yes, the AT86RF230-ZUR requires a 16 MHz fundamental-mode crystal connected to XTAL1 and XTAL2. Layout must minimize parasitic capacitance (<3 pF) on those pins, route traces short and away from digital noise sources, and place load capacitors (typically 12 pF) close to the crystal. Failure to meet these constraints causes frequency drift or startup failure.

How does the AT86RF230-ZUR handle frame acknowledgment and retransmission?

The AT86RF230-ZUR implements hardware-accelerated IEEE 802.15.4 MAC functions: it automatically generates and checks frame acknowledgments, executes CSMA-CA before transmission, and performs up to three retransmissions upon ACK timeout - all without MCU intervention. This reduces host processing load and ensures deterministic timing for time-critical sensor networks.

Can the AT86RF230-ZUR operate from a single 3.3 V supply, and how are its internal regulators configured?

Yes, the AT86RF230-ZUR accepts 3.3 V on DEVDD and EVDD. Its internal LDOs generate regulated 1.8 V AVDD and DVDD outputs, which power analog and digital domains respectively. These regulators auto-enable based on radio state and can be bypassed if external 1.8 V supplies are provided - configuration is controlled via TRX_CTRL_0 register bits.

What is the function of the SLP_TR pin on the AT86RF230-ZUR, and how is it used in practice?

The SLP_TR pin on the AT86RF230-ZUR serves three roles: (1) active-high sleep/wake control, (2) TX start trigger, and (3) CLKM output enable/disable. In practice, it replaces multiple GPIOs - e.g., asserting SLP_TR wakes the transceiver from 20 nA sleep, then pulses it to initiate transmission, eliminating need for separate control lines in compact node designs.