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July 31, 2025
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STM32N6 unused XSPI pins

  • July 31, 2025
  • 1 reply
  • 187 views

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

    This topic has been closed for replies.
    Best answer by ELABI.1

    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

    1 reply

    ELABI.1Answer
    Technical Moderator
    July 31, 2025

    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