STM32N6 unused XSPI pins

batuhanky · ‎2025-07-31

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

ELABI.1 · ‎2025-07-31

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

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View solution in original post

ELABI.1 · ‎2025-07-31

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.