The STM32F334 discovery kit helps you to discover the digital power features of the STM32F334 and to develop your applications easily.


This board is based on an STM32F334C8T6. It includes an ST-LINK/V2-1 embedded debug tool interface, high brightness LED dimming with buck converter, buck/boost converter, LEDs and pushbuttons.

To support quick evaluation and development, a large number of free ready-to-run application firmware examples are available at www.st.com/stm32f3-discovery.

Microcontroller features

Board features

Board pinout



Only the labels written in blue/white or green/white (i.e. PA_4, PB_5, A0, D14, LED1...) must be used in your code. The other labels are given as information (alternate-functions, power pins, ...).

You can find more details on the available pins and labels in the following files (link to the latest mbed-dev library version):

Getting started

Nucleo ST-LINK/V2-1 driver installation and firmware upgrade

  • Install the ST-LINK/V2-1 driver before connecting the Nucleo board to your PC the first time. Follow this LINK for all details.
  • For optimum performances, ensure that the Nucleo ST-LINK/V2-1 firmware is upgraded to the latest version (V2.J24.M11 minimum). Follow this LINK for all details.

Virtual Com Port configuration

By default the Virtual Com Port is not enabled. To enable it, you need to close SB14 and SB16 solder bridges.

Technical references

For more information, please refer to:

Known limitations

The following section describes known limitations of the platform. Note that general issues are tracked into the mbed repository available on GitHub.

This platform does not present any limitation.

Tips and Tricks

Find more information in ST WIKI pages.

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