ULINKplus

The Arm ULINKplus goes beyond traditional debugging by combining JTAG/SWD debug, Serial Wire Viewer trace, integrated power measurement, and digital test I/O in a single adapter. The built-in current and voltage measurement capability correlates power consumption directly with code execution in the Keil MDK timeline view, enabling engineers to identify which functions, interrupts, and sleep transitions drive energy consumption, critical for battery-powered IoT and wearable device development.

Digital test I/O pins provide synchronization signals for external test equipment, enabling automated hardware-in-the-loop testing workflows where debug events trigger oscilloscope captures or test fixture actions. SWV trace with precise timestamps delivers real-time event tracing, data variable logging, and exception tracking without halting the CPU. The ULINKplus bridges the gap between pure software debugging and system-level power and timing validation, making it an essential tool for teams developing power-sensitive Cortex-M applications.

Key Features

Feature	Specification
Debug Interface	JTAG and SWD
Galvanic isolation	1 kV integrated isolation between probe and target (Arm’s headline ULINKplus differentiator)
Trace	Serial Wire Viewer (SWV) with timestamps
Power Measurement	Integrated current and voltage measurement, correlated with code execution in Keil MDK
Test I/O	9 user I/O pins for test synchronization and HIL workflows
Host Connection	USB 2.0
IDE Support	Keil MDK
Target Architecture	Arm Cortex-M (Cortex-M-class debug; see DSTREAM family for Cortex-A / Cortex-R)

Why GSAS for ULINKplus

GSAS provides ULINKplus units with local stock availability in India, INR invoicing, and manufacturer warranty. Our applications team can help you configure power measurement ranges for your specific target board, set up hardware-in-the-loop test workflows with digital I/O, and integrate ULINKplus into your Keil MDK development environment. For teams evaluating debug probes, we offer side-by-side guidance on ULINKplus vs ULINKpro to match probe capabilities with your project requirements.