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STLINK-V3MINI, compact in-circuit debugger / programmer for STM32



Date:2020/08/22 10:43

STLINK-V3MINI, Compact In-Circuit Debugger And Programmer For STM32 Microcontrollers


The STLINK-V3MINI is stand-alone debugging and programming mini probe for STM32 microcontrollers.

The JTAG/SWD interfaces are used to communicate with any STM32 microcontroller located on an application board.

The STLINK-V3MINI also provides a Virtual COM port interface allowing the host PC to communicate with the target microcontroller through one UART.

The STLINK-V3MINI is a portable version, easy-to-use debugger/programmer including STDC14 interface with its flat cable.

Key Features

  • Stand-alone probe
  • Approximately 15 x 30 mm high-density integration PCB, very small form factor
  • Self-powered through a Micro-B USB connector (does not provide power supply to the target application)
  • USB 2.0 high-speed compatible interface
  • Direct firmware update (DFU) support, to use with more future devices
  • JTAG / serial wire debugging (SWD) specific features:
    • 3 V to 3.6 V application voltage support and 5 V tolerant inputs
    • Delivered with 1.27 mm pitch STDC14 to STDC14 flat cable
    • Additional adapter board and 2.54 mm pitch 20-pin JTAG/SWD flat cable (extra accessories from Waveshare)
    • SWD and serial wire viewer (SWV) communication support
  • Virtual COM port (VCP) specific features:
    • 3 V to 3.6 V application voltage support on the UART interface and 5 V tolerant inputs
    • VCP frequency up to 15 MHz
  • Drag-and-drop Flash programming
  • Two color LEDs: communication, power
  • Includes STDC14 signals protection

Supported Software

  • STM32CubeProgrammer
  • Keil® MDK-ARM
  • SW4STM32
  • STVP
  • GCC-based IDEs

Supported Devices

  • All STM32 MCUs with JTAG / SWD interface

Specification Comparison among Different STLINK Versions

JTAG/SWD application voltage3V - 3.6V3V - 3.6V1.65V - 3.6V3V - 3.6VST-LINK/V2 supports STM32 low-power devices
SWIM application voltage1.65V - 5.5VN/A1.65V - 5.5V1.65V - 5.5V STLINK-V3MINI doesn't support SWIM of STM8
SWV supportYESYESYESNOonly available for STM32 at present
Debug interfacemultimulti21STLINK-V3SET/MINI feature GPIO port besides the programming port
LED indicatortwo colorstwo colorstwo colorsred colortwo colors LED indicates both power and communication, while red color LED indicates only communication


Note: the STM32 application board in the photo is NOT included.

Connect to PC

The STLINK-V3MINI should be connected to the PC via a USB Micro-B cable.

  • Before connecting, install/update the ST-LINK toolset to support the STLINK-V3MINI (drivers)
  • STLINK-V3MINI adopts an STM32 F7 microcontroller, supports USB2.0 high speed communication

Connect to STM32 applications

The STLINK-V3MINI can be connected to STM32 target applications on JTAG / SWD interfaces.

  • Connection Method A: connect to target application directly via the onboard STDC14 connector.
  • Connection Method B: connect to target application via the STLINK-V3MINI Adapter board.


  • COM LED is blinking RED: the first USB enumeration with the PC is taking place.
  • COM LED is RED: communication between STLINK-V3MINI and the PC is established (end of enumeration).
  • COM LED is blinking GREEN/RED: data are being exchanged between the target and the PC.