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Can I Use ST-LINK/V2-1 from Nucleo-F446RE to Program an External STM32 MCU?

MedSid
Associate

‎2025-03-26 5:54 AM - last edited on ‎2025-03-26 6:58 AM by

I have an STM32 Nucleo-F446RE, which comes with an integrated ST-LINK/V2-1 debugger. I would like to use this ST-LINK to program an external STM32 MCU that does not have a development board.

  • I checked the Nucleo schematics, and I see that ST-LINK/V2-1 can be used for external programming.

  • I know that I need to connect SWDIO, SWCLK, GND, and  VDD to the external MCU.

  • I removed the two jumpers from CN2 to disconnect ST-LINK from the onboard STM32F446RE.

Before proceeding, I want to confirm if this setup is correct, if I need additional components like resistors or capacitors, or if I should buy a dedicated ST-LINK V2 instead.

I appreciate any guidance to help me solve this problem.

Thank you in advance.


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STTwo-32
ST Employee

‎2025-03-26 6:12 AM - edited ‎2025-03-26 7:22 AM

Salam @MedSid and welcome to the ST Community.

Your setup should be working just fine. You can use the ST-LINK/V2-1 from Nucleo-F446RE to Program an External STM32 MCU. More details are available on the answer of this post and UM1724.

Best Regards.

STTwo-32

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