STMicroelectronics STLINK-V3PWR

Overview

STLINK-V3PWR from STMicroelectronics is a dual-function standalone debugging probe and source measurement unit (SMU) for STM32 microcontrollers, integrating JTAG/SWD debug up to 10 MHz, UART VCP up to 12 MHz, and real-time current/power measurement from a few nA to 500 mA with ±0.5% accuracy at 50 kHz bandwidth. It supplies programmable voltage (1.6–3.6 V) to the target with 500 mA SMU output and 2 A auxiliary source, enabling power-aware firmware optimization.

For engineers reviewing the STLINK-V3PWR datasheet, STLINK-V3PWR pinout, STLINK-V3PWR application, or STLINK-V3PWR equivalent, key selection criteria include synchronized code-execution + current profiling capability, integrated level-shifting I/O (1.6–3.6 V), USB Type-C® host interface with 5 V/3 A power delivery, and native support for STM32CubeMonitor-Power for ULPMark™-compliant ultra-low-power validation.

Technical Context

The STLINK-V3PWR embeds an Arm® Cortex®-M-based STM32 MCU to manage concurrent debug sessions and high-resolution SMU acquisition. Its multipath bridge supports USB-to-SPI/I²C/CAN/GPIO translation with integrated level shifting, while SWV enables real-time trace streaming alongside current sampling at up to 100 kSPS.

It implements a 1-quadrant SMU architecture with dynamic range spanning nanoampere leakage to 500 mA load steps, maintaining stable 1.6–3.6 V output during transients. The auxiliary 2 A source operates independently without current sensing but includes 2.5 A overcurrent protection.

Key Specifications

Availability

STLINK-V3PWR is available at Aetrix Electronics and suitable for ultra-low-power firmware development, STM32-based IoT sensor node validation, and embedded power characterization requiring stable component supply and traceable firmware revision control.

Supply support for STLINK-V3PWR 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, analog ICs, MEMS, and power solutions for industrial, automotive, and consumer applications.

The STLINK-V3PWR belongs to ST's ST-LINK debugger family, engineered specifically to unify real-time power measurement and debug visibility for energy-constrained STM32 applications-enabling deterministic power-aware firmware tuning.

FAQ

Does STLINK-V3PWR require external power to operate?

No. STLINK-V3PWR draws all operating power from its USB Type-C® interface, which supplies up to 5 V/3 A-sufficient to power both the probe and the target board simultaneously via its SMU and auxiliary outputs. No external adapter or bench supply is needed for standard operation.

Can STLINK-V3PWR measure current while debugging STM32 applications in real time?

Yes. It synchronizes SWD debug commands with SMU sampling at up to 100 kSPS, capturing current consumption correlated precisely to instruction execution, interrupt entry, or peripheral activation-enabling cycle-accurate power profiling without code instrumentation.

Is STLINK-V3PWR compatible with non-STM32 targets?

As a debug probe, it is optimized for STM32 and only officially supports ST's Cortex-M devices via ST-LINK protocol. As an SMU, its 1.6–3.6 V outputs and level-shifted I/Os can power and interface with other 1.6–3.6 V logic systems, but debug functionality (SWD/JTAG) remains STM32-specific.

What software tools support STLINK-V3PWR out of the box?

STM32CubeMonitor-Power provides native real-time current/power visualization and ULPMark™ benchmarking. It also works with STM32CubeIDE, IAR Embedded Workbench®, and Keil MDK-ARM for debugging-no additional drivers required on Windows, Linux, or macOS.