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Associate III
May 6, 2026
Solved

STM32H753XIH6: VCAP internal connections

  • May 6, 2026
  • 3 replies
  • 199 views

Hi 
I am trying to figure out these VCAP conections.

tyassin_0-1778059248074.png

From the datasheet I could look like they are internally connected together, for this reason could avoid routing these three pads together on my board.
Can anybody confirm that is the case?

Thank you.

Best answer by mƎALLEm

Hello,

No. You should connect them externally. If they are two or three pads on a package there is a reason behind.

Not connecting them externally leads to an unexpected behavior.

This is how you should connect them:

mALLEm_0-1778059815389.png

Please refer to AN4938 "Getting started with STM32H74xI/G and STM32H75xI/G MCU hardware dev" / Figure 18. STM32H753XI reference schematic.

3 replies

mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
May 6, 2026

Hello,

No. You should connect them externally. If they are two or three pads on a package there is a reason behind.

Not connecting them externally leads to an unexpected behavior.

This is how you should connect them:

mALLEm_0-1778059815389.png

Please refer to AN4938 "Getting started with STM32H74xI/G and STM32H75xI/G MCU hardware dev" / Figure 18. STM32H753XI reference schematic.

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
Andrew Neil
Super User
May 6, 2026
A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
tyassinAuthor
Associate III
May 6, 2026

Great thank you for a fast and precise answer.