STMicroelectronics X-NUCLEO-OUT01A2

Overview

X-NUCLEO-OUT01A2 from STMicroelectronics is an industrial digital output expansion board for STM32 Nucleo development platforms, built around the ISO8200BQ octal high-side smart power switch. It delivers galvanically isolated 0.7 A per channel switching (10.5–36 V process side), <6 µs synchronous control jitter, and integrated overload/overtemperature/loss-of-ground protection - enabling robust evaluation of PLC-style digital output modules driving inductive industrial loads.

For engineers reviewing the X-NUCLEO-OUT01A2 datasheet, X-NUCLEO-OUT01A2 pinout, X-NUCLEO-OUT01A2 application, or X-NUCLEO-OUT01A2 equivalent, this board supports direct GPIO and Arduino® UNO R3 interface modes, configurable process voltage range (11–33 V standard / 10.5–36 V extended), logic-side 3.3–5 V operation, and diagnostic LED feedback for output status, enable signal, and fault conditions.

Technical Context

The board implements dual-mode digital control: direct mode (jitter <20 µs) via independent GPIOs per channel, and synchronous mode (jitter <6 µs) using shared SYNC/LOAD/OUT_EN signals - both leveraging the ISO8200BQ's embedded 2.5 kVRMS isolation barrier. Process-side supply is decoupled with reverse-polarity protection and adjustable via jumpers J9/J10.

Logic-side interfacing uses STM32 Nucleo Morpho and Arduino® UNO R3 headers, with configurable IOREF (3.3 V or 5 V). Diagnostic LEDs indicate per-channel output state (green), common overtemperature/communication error (red), and global output enable (yellow), all controlled via dedicated jumper positions (J3, J6, J7).

Key Specifications

Availability

X-NUCLEO-OUT01A2 is available at Aetrix Electronics and suitable for industrial PLC prototyping, factory automation I/O expansion, and embedded control system validation requiring stable component supply, traceable sourcing, and long-term board lifecycle support.

Supply support for X-NUCLEO-OUT01A2 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, power management, analog, and industrial ICs, with strong focus on embedded systems and industrial automation solutions.

The X-NUCLEO series is ST's ecosystem of plug-and-play expansion boards designed to accelerate evaluation and development of industrial-grade functions - specifically targeting digital I/O, sensing, connectivity, and power control for STM32-based applications.

FAQ

What microcontroller platforms is the X-NUCLEO-OUT01A2 compatible with?

The board is natively compatible with STM32 Nucleo development boards including NUCLEO-F401RE and NUCLEO-G431RB. It connects via Morpho and Arduino® UNO R3 headers, supporting 3.3 V or 5 V logic levels. No additional level-shifting hardware is required when used with these ST platforms.

How do I configure the board for synchronous vs. direct control mode?

Synchronous mode requires J1 and J2 open, SW37 set to 2–3, and SW36 set to 2–3 - enabling shared control of all eight channels via SYNC, LOAD, and OUT_EN signals. Direct mode requires J1 and J2 closed, SW37 set to 2–3, and SW36 set to 1–2 - assigning individual GPIOs to each INx input for independent channel control.

What protections does the board provide on the process side?

The board provides reverse polarity protection on both process and logic supply rails. The ISO8200BQ IC itself integrates undervoltage lock-out, thermal shutdown, current limiting for overload, and loss-of-ground detection - all reported via the FAULT pin and indicated by the red diagnostic LED when J3 pins 1–2 are closed.

Can the X-NUCLEO-OUT01A2 be stacked with other expansion boards?

Yes - the board supports mechanical and electrical stacking with other X-NUCLEO boards (e.g., X-NUCLEO-PLC01A1 for 8-input expansion or X-NUCLEO-IDW01M1 for Wi-Fi connectivity). Stacking preserves Arduino® and Morpho pin access and enables multi-function industrial PLC evaluation without custom wiring or breakout adapters.