STMicroelectronics X-NUCLEO-OUT02A1

Overview

X-NUCLEO-OUT02A1 from STMicroelectronics is an industrial digital output expansion board for STM32 Nucleo platforms, built around the ISO8200AQ octal high-side smart power solid-state relay. It delivers galvanic isolation (4 kV), 20 MHz SPI control interface, 0.7 A per channel drive capability, and integrated diagnostics including VCC power-good, overload, and thermal shutdown - enabling robust evaluation of digital output modules in PLC and factory automation systems.

For engineers reviewing the X-NUCLEO-OUT02A1 datasheet, X-NUCLEO-OUT02A1 pinout, X-NUCLEO-OUT02A1 application, or X-NUCLEO-OUT02A1 equivalent, this board supports daisy-chained 16-channel configurations, Arduino® UNO R3 and STM32 Nucleo (NUCLEO-F401RE/NUCLEO-G431RB) compatibility, reverse polarity protection, and IEC61000-4-2/3/5 EMC compliance.

Technical Context

The board implements a galvanically isolated digital output stage using the ISO8200AQ, which integrates eight independent high-side switches with embedded isolation, SPI-controlled enable/disable, and real-time fault reporting via dedicated ISO_FAULT and ISO_PGOOD signals. Its logic side interfaces directly to STM32 GPIOs and Arduino R3 headers at 3.3 V, while the process side operates from 10.5–33 V DC with up to 0.7 A per channel.

Signal integrity is reinforced by RF-coupled isolation between logic and process domains, ESD protection (ESDA15P60-1U1M, ESDA7P60-1U1M), transient suppression (SMC30J36A, SMBJ5.0A), and 3 kV AC-rated 4.7 nF isolation capacitors. Daisy-chaining support enables synchronized control of two boards via shared SPI bus and dedicated EN/SS lines.

Key Specifications

Availability

X-NUCLEO-OUT02A1 is available at Aetrix Electronics and suitable for programmable logic controller (PLC) development, industrial I/O module prototyping, and factory automation system validation requiring stable component supply, traceable sourcing, and long-term design-in support.

Supply support for X-NUCLEO-OUT02A1 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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer applications.

This board belongs to ST's X-NUCLEO ecosystem of STM32 Nucleo-compatible expansion boards, engineered specifically to accelerate evaluation and implementation of intelligent power switching, industrial I/O, and functional safety–ready digital output subsystems.

FAQ

What microcontroller platforms is X-NUCLEO-OUT02A1 compatible with?

X-NUCLEO-OUT02A1 is validated for direct use with STM32 Nucleo boards including NUCLEO-F401RE and NUCLEO-G431RB. It connects via native morphological headers (CN5/CN7/CN9) and Arduino® UNO R3 connectors, enabling seamless GPIO and SPI interfacing without level-shifting or adapter hardware.

Does X-NUCLEO-OUT02A1 support daisy-chaining for expanded channel count?

Yes - the board supports daisy-chained configuration of two units via shared SPI bus (ISO_CLK, ISO_SDIO1, ISO_SS) and dedicated ISO_OUT_EN signal. This enables synchronized control and monitoring of up to 16 digital outputs while maintaining individual channel diagnostics and isolation integrity.

What protections are implemented on the process-side power path?

The board includes reverse polarity protection on VIN, overvoltage clamping via SMC30J36A (36 V transzorb), and thermal/current limiting enforced by the ISO8200AQ itself. Each output features fast-decay circuitry for inductive loads and automatic thermal shutdown with fault reporting via ISO_FAULT pin.

Is software support available for X-NUCLEO-OUT02A1?

Yes - ST provides the X-CUBE-IPS software expansion package for STM32CubeMX and STM32CubeIDE, offering HAL drivers, example projects, and diagnostic APIs tailored for ISO8200AQ-based digital output systems, including initialization, SPI command sequencing, and fault status decoding.