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MCXN236 eFuse / OTP information?

Which document for the MCXN236 has information about the size, use, and addressing of the OTP bits?

Thanks!

Security(Edgelock | secure boot | OTP)Re: MCXN236 eFuse / OTP information?

Thanks, Celeste! Very helpful info on accessing the MCXN236 security manual. Navigating NDAs can feel like playing Slope Game - constantly overcoming obstacles! Knowing it's through marketing is key. Perhaps a summary for non-NDA folks could be beneficial? Appreciate the direction!

Re: MCXN236 eFuse / OTP information?

Good to know, thank you Marek.

Re: MCXN236 eFuse / OTP information?

Hi @psmitty7373 ,

you can also use MCUXpresso Secure Provisioning tool (https://nxp.com/mcuxpresso/secure) to edit the fuses in GUI tool (see OTP configuration window).

For full fuses description, you need to install restricted data package, that can be downloaded on the same page.

Re: MCXN236 eFuse / OTP information?

Thanks, Celeste.

Re: MCXN236 eFuse / OTP information?

Hello @psmitty7373 ,

Thanks for your post.

According to the section "12.5 eFuse definitions " of MCXN236 reference manual, I believe it can be found in the MCX N23x Security Reference Manual. 

Screenshot 2025-03-06 171317.png

The Security Reference Manual is confidential. You need to sign a NDA with our company and apply for the secure document on your own. The marketing department will decide whether to open it for your account.

 

Screenshot 2025-03-06 171554.png

Hope it can help you.

BRs,

Celeste





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‎11-21-2025 02:28 PM
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