Skip to main content
MK..1
MK..1
Associate III
February 1, 2023
Solved

SDIO/EMMC version of STM32 versus EMMC IC version

  • February 1, 2023
  • 2 replies
  • 2268 views

Hi

I want to use an EMMC( INSIGNIS NSEC53K) with STM32F405 SDIO interface.

  • STM32F405 manual says: "Full compliance wit MhultiMediaCard System Specification Version 4.2."
  • the EMMCwe have chosen: INSIGNIS NSEC53K. Its datasheet says:"Compliant with eMMC Specification Ver. 4.4, 4.41, 4.5, 5.0"

Are these 2 kompatibel with each other? Will this work?

At the moment I reach transferstate, but before I spend more time on it, it would be nice to know if there will be major issues.

Which stm32 SDIO/SDMMC interfaces have a MMC spec version >= 4.4?

Thanks

This topic has been closed for replies.
Best answer by Peter BENSCH

Well, the families with earlier release dates (STM32F, older STM32L) are all compatible with specification 4.2.

The younger families such as STM32L4+, STM32L5, STM32H then support specification 4.51.

Does it answer your question?

Regards

/Peter

2 replies

Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
February 1, 2023

Well, the families with earlier release dates (STM32F, older STM32L) are all compatible with specification 4.2.

The younger families such as STM32L4+, STM32L5, STM32H then support specification 4.51.

Does it answer your question?

Regards

/Peter

In order 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.
MK..1
MK..1Author
Associate III
February 1, 2023

Thanks very much.

One Question remains open: Will my chosen EMMC (NSEC53K, which does 4.4 upwards) and STM32F405 (which does only 4.2) work together?

Peter BENSCH
Peter BENSCH
ST Technical Moderator
February 1, 2023

Well, this is about the compatibility of a device with a newer specification that is to be controlled by an STM32 with an older specification. Unfortunately, ST cannot make a statement on this, but the manufacturer of the eMMC certainly can.

If the problem is solved, please mark this thread as answered by selecting Select as best, as also explained here. This will help other users find that answer faster.

Good luck!

/Peter

In order 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.
Terms & ConditionsAccessibility statement