SEGGER J-Link EDU Mini JTAG/SWD Debugger

A compact EDU version of SEGGER’s J-Link debug probe, this little unit gives you direct JTAG/SWD access to Cortex-M based targets for programming and debugging ARM microcontrollers.

Instead of relying on printf statements and LEDs, you can set breakpoints, inspect memory and registers on a live system, halt execution at a location or condition, single-step through code, reset the target, program flash, and break on main from your toolchain or IDE.

It is intended for education and personal, non-commercial projects only. If you are developing a commercial product, working in a commercial environment, or reasonably expect to earn money from the project, you will need a commercial J-Link or another debugger that suits that use.

The J-Link ecosystem is toolchain, IDE and vendor neutral, with support for GDB-based workflows and major IDEs across Windows, Linux and Mac OS X. The kit includes the EDU Mini probe and target interface cabling for common 0.05 inch debug headers.

Features:

• Unlimited breakpoints: The unlimited breakpoints in flash memory feature can be used free of charge for evaluation. The evaluation period is not time limited. For commercial use a separate license is required.
• Free software updates: As a legitimate owner of a SEGGER J-Link, you can always download the latest software free of charge. Though not planned and not likely, SEGGER reserves the right to change this policy. Older models may not be supported by newer versions of the software. Typically, older models are supported with new software at least 3 years after end of life.
• Supports concurrent access to CPU by multiple applications: J-Link allows multiple applications to access a CPU at the same time, such as J-Link Commander in parallel with a debugger, DCC communication tools, Micrium’s u/C-Probe, or SEGGER’s embOSView.
• Cross-platform support: Runs on Windows, Linux, Mac OS X. The Mac and Linux versions are fully usable, but limited to J-Link Commander, command line GDBServer, and shared library (DLL-equivalent).
• Licensing and support: J-Link EDU Mini may only be used for non-commercial purposes.
• Support: J-Link EDU Mini does not include support, however questions may be submitted to the SEGGER Forum.
• Non-profit educational use only: You may use the J-Link EDU for non profit educational purposes only.
• Commercial restriction: You may not use the J-Link EDU and its J-Link software direct or indirect in or for a profit organization or business purposes or other undertaking intended for profit.
• Commercial environment restriction: You may not use the J-Link EDU and its J-Link software direct or indirect in any other commercial environment (e.g. office).
• Commercial product restriction: You may not use the J-Link EDU and its J-Link software to develop, debug, program or manufacturer a commercial product (or parts thereof).
• Monetary gain restriction: You may not use the J-Link EDU and its J-Link software to either earn money or reasonably anticipate the receipt of monetary gain from it.
• USB-based: It is USB-based and uses a high-speed MCU internally, not an FTDI converter like most low-cost debuggers.
• Toolchain, IDE and vendor neutral: One tool can be used for ARM debugging across different chips and workflows.
• GDB support: Supports GDB-based debugging and flash programming on Linux, Windows, and the Mac via the free GDB Server.
• IDE support: Supports most major IDEs, including Keil, IAR, Atmel Studio, and Crossworks for ARM.
• Flash programming algorithms: Includes flash-programming algorithms for most MCUs, with SEGGER actively updating drivers to support new chipsets.
• Reliability: It just works, keeps on working, and is designed to remain useful for years.
• Fast operation: Stepping through breakpoints, reading memory addresses, and programming flash memory are quick.

Specifications:

• Included component: J-Link EDU Mini with standard 10-pin 0.05" male connector (compatible to J-Link)
• Included component: combo .05″ 19‑pin and .05″ 9-pin target interface cable
• Debugger weight: 7.4g
• Debugger dimensions: 2.5 × 2.5 × 0.75 in / 63.5mm x 63.5mm x 19mm
• Revision history: As of December 8, 2025 - Now includes a one-meter-long, blue, woven fabric USB-C cable in addition to the SWD cable.
• Revision history: As of March 11, 2025 - this now comes in plastic housing and has USB Type C instead of Micro …

A handy choice for hobby, open source and educational ARM projects where you want a proper debug probe without stepping into commercial use.