ST-LINK power questions

[giwonKIM]

Hello

I am connecting the ST-LINK and downloading the firmware to the programmer.

I have a question. Can I do power from ST-LINK and download firmware instead of supplying external power to the MCU? Currently, I use external power, but I wonder if there is such a way.

Thank you.

[AScha.3]

Hi,

A genuine st-link has no power output, so no power for the target.

Only if you solder/wire a connection to get power yourself, let say with a st-link V3 mods, you can have some 100mA or so from the st-link. See the manual for st-link V3mods.

[Andrew Neil]

You didn't say what ST-Link you're using - there are several versions:

https://www.st.com/en/development-tools/hardware-debugger-and-programmer-tools-for-stm32/products.html

TN1235: Overview of ST-LINK derivatives

Those are the real ones; there are also fakes/clones - see: How to recognize a genuine ST-LINK/V2 versus a cloned one.

The User Manual for the particular model you have will describe its capabilities...