STM32H753ZIT6 - ST LINK Programmer working voltage compatibility

[shyammurali]

Dear ST team ,

My STM32H753ZIT6 MCU is designed for working at 3.3V, Is this voltage compatible with the ST Link programmer?

I want to know whether I need to put any level translator in between for SWDIO, SWCLK, SWO, VCP_RX, VCP_TX, NRST signals and the programming connector if 3.3V is not compatible.

Regards
Shyam

[AScha.3]

Hi,

3v3 is the standard voltage for STM32 and for the st-link also.

>3.3V, Is this voltage compatible with the ST Link programmer?

yes.

[Andrew Neil]

Which particular ST-Link?

ALL ST-Links support 3.3V, but some can also support other voltages.

As always, see the User Manual for the particular model you have.

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

TN1235: Overview of ST-LINK derivatives.

This, of course, applies to genuine ST-Links - How to recognize a genuine ST-LINK/V2 versus a cloned one.

PS:

It seems that this is a follow-on from your previous thread: NUCLEO 144 H7 LEGACY for programming an external MCU ?

In that case, check the User Manual and/or Schematics for that Nucleo board to see what voltage it operates at.

As @AScha.3 suggests, that almost certainly will be 3.3V

[TDK]

There are many "ST Link programmers". All of them support 3.3 V natively. No level shifter required.

[EZHON.1]

 This is level shifter version for some STLINKV3E solution.