STMicroelectronics X-NUCLEO-IOD02A1

Overview

X-NUCLEO-IOD02A1 from STMicroelectronics is an industrial dual-channel IO-Link and SIO device expansion board based on the L6364Q transceiver, featuring SPI/UART interfaces, integrated 3.3 V/5.0 V linear regulators, a 50 mA adjustable buck converter (5.0–10.8 V), wake-up detection, and interrupt diagnostics - used for rapid evaluation of IO-Link sensor communication in factory automation systems.

For engineers reviewing the X-NUCLEO-IOD02A1 datasheet, X-NUCLEO-IOD02A1 pinout, X-NUCLEO-IOD02A1 application, or X-NUCLEO-IOD02A1 equivalent, this board enables hands-on validation of IO-Link PHY layer compliance, M-sequence handling, robustness against ESD (±3 kV contact), surge (±1.2 kV), and conducted/radiated immunity per IEC 61000-4-x standards.

Technical Context

The X-NUCLEO-IOD02A1 implements full IO-Link Class A physical layer with two independent channels (CQ and DIO), supporting both Multi-byte/Single-byte and Transparent modes via SPI-configurable operation and UART-based sensor data tunneling. It embeds hardware-level wake-up detection and diagnostic interrupt signaling directly tied to L6364Q status flags.

Power architecture includes three regulated outputs: fixed 3.3 V and 5.0 V LDOs (50 mA each) and an adjustable buck converter (5.0–10.8 V, 50 mA), all protected against overload, overtemperature (adjustable shutdown threshold), reverse polarity, and wire-break faults on process-side terminals.

Key Specifications

Availability

X-NUCLEO-IOD02A1 is available at Aetrix Electronics and suitable for factory automation prototyping, IO-Link sensor module development, and STM32-based industrial edge node design requiring stable component supply and rapid time-to-evaluation.

Supply support for X-NUCLEO-IOD02A1 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

STMicroelectronics is a global semiconductor leader specializing in microcontrollers, analog ICs, power management, and industrial interface solutions - headquartered in Geneva, Switzerland.

This board belongs to ST's X-NUCLEO ecosystem for STM32 Nucleo expansion, designed specifically to accelerate IO-Link device development with plug-and-play compatibility, Arduino UNO R3 and ST morpho headers, and direct integration with STM32Cube software stacks.

FAQ

What microcontrollers is the X-NUCLEO-IOD02A1 compatible with?

The board is natively compatible with STM32 Nucleo development boards including NUCLEO-L073RZ and NUCLEO-G071RB. It connects via Arduino UNO R3 headers (default) or ST morpho headers (optional, requires jumper configuration). Communication uses SPI and GPIO pins mapped to standard STM32 peripherals - no external level-shifting required.

Does the board support both IO-Link and SIO protocols?

Yes - it supports full IO-Link v1.1 (including Multi-byte, Single-byte, and Transparent modes) and legacy SIO (Single Input/Output) operation. Mode selection is controlled via onboard jumpers and SPI register configuration, enabling evaluation of both modern and legacy industrial fieldbus sensor interfaces on one platform.

How is power delivered to the IO-Link device side?

The board supplies the IO-Link device side (CQ/DIO) through its L6364Q transceiver using either the internal buck converter (adjustable 5.0–10.8 V output) or external 24 V process-side input. Reverse polarity protection, ground/VCC wire-break detection, and adjustable overload thresholds ensure safe operation in harsh industrial environments.

Can the X-NUCLEO-IOD02A1 be used with other sensor expansion boards?

Yes - it is designed to interoperate with ST's X-NUCLEO-IKS02A1 motion and environmental sensor shield. The two boards can be stacked to create a complete IO-Link sensor node: IKS02A1 provides sensing (accelerometer, gyroscope, temperature, humidity), while IOD02A1 handles IO-Link physical layer, protocol stack, and industrial-grade power delivery.