How to do SDRAM pin if not used

[deega_jung]

Hello,

How do I handle SDRAM pins when I don't use SDRAM on RT1052?
Should I open the pin? Or pull-up or down? Also, please advise for pin mux of SDRAM ports.
Lastly, what should I do in Software?

Thanks,

Deega

[jeremyzhou · Accepted solution]

Hi,
Thanks for your reply.
1) Should I choose the GPIOx or the SEMC_xx or not?
-- If you don't use the SEMC pins, it's unnecessary to configure ALT mode for them, in another word, it doesn't need you to do anything.
Hope this is clear.
Have a great day,
TIC

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------

[deega_jung]

Hi,

Thank you for your reply. Let me close this.

Thanks,

Deega

[jeremyzhou]

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1) Should I open the pin? Or pull-up or down?
-- Just keep these pins floating.
Have a great day,
TIC

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------

[deega_jung]

Hi TIC,

Thank you for your reply.

I have an additional inquiry, should all SDRAM ports not be defined (NC) in pin mux?

Thanks,

Deega

[jeremyzhou]

Hi,
Thanks for your reply.
1) Should all SDRAM ports not be defined (NC) in pin mux?
-- Actually, I'm not very clear with this question, please clarify it again.
Have a great day,
TIC

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------

[deega_jung]

Hi,

I understand that we can choose the role of each pin in the Pin Mux.
This pins are select to others function below my capture for example.
By the way, if I don't use SDRAM, how should I handle this pin in the Pin Mux?
Should I choose the GPIOx or the SEMC_xx or not?

Thanks,

Deega