J-Link EDU Mini

The J-Link EDU Mini is a stripped-down, budget-friendly model of the J-Link debug probe created for educational use. Even with its reduced size, it maintains the J-Link features of fast download rates into the internal flash of supported microcontrollers and the setting of unlimited breakpoints in flash memory.

The J-Link EDU Mini is available to educational institutions, private persons, and students who want to educate themselves in programming and debugging of embedded systems. Find out more about SEGGER’s Educational Partnership Program.

Key features

  • Tiny size (18mm by 50mm) – similar to a USB stick
  • Full J-Link functionality
  • Download speed up to 200 KB/s
  • Unlimited breakpoints in flash memory (Flash Breakpoints)
  • Supports a broad range of microcontrollers
  • Free software updates


All software is included free of charge. 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, we reserve the right to change this policy. Note that older models may not be supported by newer versions of the software. Typically, we support older models with new software at least 3 years after end of life.


As a multi-platform solution, J-Link EDU Mini comes with the setup and control software for Linux, macOS and Windows. The MAC and Linux versions are fully usable, but limited to the following components:

  • J-Link Commander
  • Command line GDBServer
  • Shared library (DLL-equivalent)

Software and firmware updates are included. Similarly, use on all currently supported target devices, and any that will be added, is also included.

Licensing and support

You may use the J-Link EDU Mini for non profit educational purposes only! Non-profit educational purposes means that you may not use the J-Link EDU Mini and its J-Link software:

  • directly or indirectly in or for a profit organization or business purposes or other undertaking intended for profit.
  • direct or indirect within any other commercial environment (e.g. office).
  • to develop, debug, program or manufacture a commercial product (or parts thereof).
  • to use it to either earn money or reasonably anticipate the receipt of monetary gain from it.

Any other use of the J-Link EDU Mini is prohibited and illegal! If there is any doubt if a certain use may be considered within the foregoing scope or whether your use of the J-Link EDU Mini applies to an educational situation, it is strongly recommended to get in touch and consult SEGGER prior use.

For clarification purposes: A student using the J-Link EDU Mini direct or indirect in a business or profit organization (e.g. company) is considered a violation of the scope of this agreement.

Please note:

J-Link EDU Mini does not come with support.

Flash Breakpoints

The J-Link EDU Mini license includes the Unlimited Flash Breakpoints in flash memory feature. Developers may set an unlimited number of breakpoints in flash memory helping to debug applications that run from flash memory.

Technical specifications

Supported OSMicrosoft Windows (x86/x64), Linux (x86/x64/Arm), macOS (x86/Apple Silicon)
Electromagnetic compatibility (EMC)EN 55022, EN 55024
Operating temperature+5°C … +60°C
Storage temperature-20°C … +65 °C
Relative humidity (non-condensing)Max. 90% rH
Size (without cables)35mm x 17mm x 8mm
Weight (without cables)5g
Available interfaces
USB interfaceUSB 2.0 (Full-Speed)
Target interface9-pin 0.05” Samtec FTSH connector
JTAG/SWD interface, electrical
Power supplyUSB powered, max. 30mA
Target interface voltage (VIF)3.3V
Current drawn from target voltage sense pin (VTRef)< 25µA
Target supply voltageN/A
Target supply currentN/A
Reset typeOpen drain. Can be pulled low or tristated
JTAG/SWD interface, timing
JTAG speedMax. 4 MHz
SWO sampling frequencyMax. 4 MHz
Data input rise time (Trdi)Trdi <= 20ns
Data input fall time (Tfdi)Tfdi <= 20ns
Data output rise time (Trdo)Trdo <= 10ns
Data output fall time (Tfdo)Tfdo <= 10ns
Clock rise time (Trc)Trc <= 10ns
Clock fall time (Tfc)Trc <= 10ns

Package content

J-Link EDU Mini
20pin_0.5 target ribbon cable
10Pin 05" Ribbon Cable
Micro USB Cable_Short

J-Link EDU Mini

.05″ 20-pin ribbon cable

.05″ 10-pin ribbon cable

Micro USB Cable