Migration from STM32L to STM32H5

[Janardhan]

We have product running with STM32L162ZET6 successfully. Because of memory constraints on future developments , we wanted to use alternative part for it. During research, we found STM32H533ZET6 by Hardware engineer.
After comparison, we found that architecture, power consumption , security , memory layout are different from our own MCU.

Is it possible to migrate between the MCU easily, require anything or miss something that is too important consider.
Challenges:

1. wanted to migrate with no effect on Hardware.

2. Little impact on Firmware change .

Any inputs will be very helpful.

Thank

[Andrew Neil]

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@Janardhan wrote:

Is it possible to migrate between the MCU easily, Thank

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That depends on what you mean by, "easily" !

It will also depend a lot on how portable you existing firmware is - ie, whether it is tightly-bound to the specific details of the L1 or not.

If your existing firmware is not already portable, a good first step could be to make it so.

At the end of the day, it's just another porting exercise...

EDIT:

You may get some hints & tips from:

• AN5992 Migrating from STM32F446 to STM32H523/533 MCUs
  https://www.st.com/resource/en/application_note/an5992-migrating-from-stm32f446-to-stm32h523533-mcus-stmicroelectronics.pdf
  
  
• AN5688 Migrating from STM32F427/437 & STM32F429/439 to STM32H573/563 & STM32H562 MCUs
  https://www.st.com/resource/en/application_note/an5688-migrating-microcontroller-applications-from-stm32f427437-and-stm32f429439-to-stm32h573563-and-stm32h562-mcus-stmicroelectronics.pdf
  
  
• AN5959 Migrating within the STM32H5 MCUs
  https://www.st.com/resource/en/application_note/an5959-migrating-within-the-stm32h5-mcus-stmicroelectronics.pdf
  

[AScha.3]

To see pin compatible cpus, just open in Cube the -> Pinout    tab:

select pin compatible cpus --- and you get a list (or not ) :)

+

Just guessing : something like STM32L476ZG might fit...with 1M flash here.

[Janardhan]

Its not tightly coupled with L1.

My basic question is STM32L cortex M3 and STM32H5 Cortex M33.
Is it possible to port.  As there is no documents available for migration guide for STM32L to STM32H controller.

if any documents are available , please attach.

[STTwo-32]

Hello @Janardhan and welcome to the ST Community :smiling_face_with_smiling_eyes:.

As said @Andrew Neil , that may depend on your use case, your firmware, your design, .... For that I've escalated your request for our direct support. You will be contacted soon by one of our FAEs. He will help you on that.

Best Regards.

STTwo-32

[Andrew Neil]

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@Janardhan wrote:

Is it possible to port.  

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Of course it's possible !

Here, I'm porting from an AVR to an STM32; so two completely different architectures - not even the same family or same manufacturer!

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@Janardhan wrote:

 there is no documents available for migration guide for STM32L to STM32H controller.

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you can't expect there to be specific documents for every single possible case!

Again, it's the same principles as porting from any chip to any other chip.

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@Janardhan wrote:

if any documents are available , please attach.

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I added some links to my earlier post.

Going to a Cortex-M33, probably the biggest thing you're going to have to get to grips with is the security features.

[Janardhan]

Yes, 
I will check the provided links. Actually, we thought to migrate or replace MCU without big change in firmware. After getting into discussion here, Its looks like , there will be firmware change for the migration of MCU.

[Janardhan]

Thank you.
I am excited and waiting for your support 

[Douglas MILLER]

This post has been escalated to the ST Online Support Team for additional assistance. We'll contact you directly.