STMicroelectronics X-NUCLEO-OUT01A1

Overview

X-NUCLEO-OUT01A1 from STMicroelectronics is an industrial digital output expansion board based on the ISO8200BQ galvanically isolated octal high-side smart power solid-state relay, operating from 10.5 V to 33 V with 700 mA max per channel, status LEDs for fault and thermal protection, and Arduino® UNO R3 connector compatibility for STM32 Nucleo boards including NUCLEO-F103RB, F302R8, and F401RE.

For engineers reviewing the X-NUCLEO-OUT01A1 datasheet, X-NUCLEO-OUT01A1 pinout, X-NUCLEO-OUT01A1 application, or X-NUCLEO-OUT01A1 equivalent, this board enables rapid prototyping of industrial PLC I/O subsystems with galvanic isolation, EMC-compliant output switching (IEC61000-4-2/3/5), and seamless integration with X-NUCLEO-PLC01A1 and X-NUCLEO-IDW01M1 for full remote-managed PLC solutions.

Technical Context

The board implements eight independently controlled, galvanically isolated high-side outputs using the ISO8200BQ, which integrates power MOSFETs, protection circuitry, and diagnostic feedback in a single package. Each channel supports up to 700 mA continuous load current and features overtemperature shutdown and fault reporting via dedicated FAULT pin.

Control interface uses parallel 8-bit input (ISO_IN1–ISO_IN8), synchronous LOAD/EN/SYNC signals, and status feedback via FAULT and thermal indicators. Power domains are separated: digital supply (7–12 V) for logic and analog supply (10.5–33 V) for output loads, ensuring robust noise immunity in industrial environments.

Key Specifications

Availability

X-NUCLEO-OUT01A1 is available at Aetrix Electronics and suitable for industrial PLC prototyping, factory automation I/O expansion, remote-controlled machinery interfaces, and embedded control systems requiring stable component supply and long-term design-in support.

Supply support for X-NUCLEO-OUT01A1 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, designing and manufacturing microcontrollers, power ICs, sensors, and development tools for industrial, automotive, and consumer applications.

The X-NUCLEO series targets rapid evaluation and system-level prototyping of STM32-based industrial control solutions, emphasizing interoperability, EMC robustness, and modular scalability across PLC, HMI, and IoT edge nodes.

FAQ

What microcontrollers is the X-NUCLEO-OUT01A1 compatible with?

The board is designed for STM32 Nucleo development boards with Arduino® UNO R3 connectors, specifically validated with NUCLEO-F103RB, NUCLEO-F302R8, and NUCLEO-F401RE. It communicates via GPIO-controlled parallel signals (ISO_IN1–ISO_IN8, LOAD, EN, SYNC) and requires no special drivers or HAL dependencies.

Does the board provide galvanic isolation between MCU and output loads?

Yes - each of the eight output channels uses the ISO8200BQ, which integrates reinforced galvanic isolation rated to 5 kVRMS per UL 1577 and 3.75 kVRMS per IEC 60747-5-5. This isolates the STM32 logic domain (3.3 V/5 V) from industrial 24 V DC load circuits, preventing ground loops and noise coupling.

How is fault detection implemented on this board?

Fault detection is handled by the ISO8200BQ's integrated diagnostics: overtemperature shutdown triggers a common FAULT pin assertion, and individual channel faults (overload, short-circuit) are indicated via status LEDs. The FAULT signal is routed to the Nucleo board for real-time software monitoring and safe shutdown response.

Can multiple X-NUCLEO-OUT01A1 boards be stacked or daisy-chained?

No - the board lacks hardware stacking support (no dedicated stackable headers or addressable control). However, it can be used alongside X-NUCLEO-PLC01A1 (8-input board) via shared Arduino connectors to build a 8-in/16-out PLC configuration, and wireless extension is supported via X-NUCLEO-IDW01M1 Wi-Fi module.