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Associate II
Jul 31, 2025 11:36 AM UTC
Solved

STM32N6 unused XSPI pins

Hi all,

I'm designing STM32N655L0 based board and I've one question.

I'm using XSPI1 and XSPI 2 peripherals.

  • XSPI2->Octa SPI mode, NOR Flash
  • XSPI1-> SDRAM, Hexa SPI

So my question is can I use unused CS, NCLK pins as an IO?

I just wanted to be sure.

 

BR

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ELABI.1
ELABI.1Best answer
ST Technical Moderator
Jul 31, 2025 12:26 PM UTC

Hi @batuhanky 

Yes, it's possible. Just be sure that these GPIOs are not used and not interfaced with external memories.

Thank you.

ELABI.1

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

1 reply

ELABI.1
ELABI.1Best answer
ST Technical Moderator
Jul 31, 2025 12:26 PM UTC

Hi @batuhanky 

Yes, it's possible. Just be sure that these GPIOs are not used and not interfaced with external memories.

Thank you.

ELABI.1

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.