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.

Graduate

Question

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

Forum|Forum|11 months ago
March 26, 2025
2 replies
663 views

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.

This topic has been closed for replies.

S

STTwo-32

Technical Moderator

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