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Last bytes of OTP written at factory for STM32WL5MOC

DWalk.3
Associate III

I'm using a custom board with the STM32WL5MOC. I've noticed that the last three 32-bit words of the OTP have been written to the values: 

FF FF FF FF FE FF FF FF 02 00 10 38 D1 DB AF 46

This makes the OTP 16 bytes shorter. Is this intentional, or is it a bug? 

1 ACCEPTED SOLUTION

Accepted Solutions

Or not their job... Open a support case, or talk to your local sales rep, or FAE

https://www.st.com/content/st_com/en/support/support-home.html

https://ols.st.com/s/

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View solution in original post

4 REPLIES 4
DWalk.3
Associate III

I wonder if this is done intentionally. There doesn't seem to be any way to distinguish between the module and STM32WLE5/STM32WL5x IC. This would be helpful for me as I'm migrating from the Seeed Studio Wio-E5 that uses the WLE module. They are different in that the LSE drive strengths differ; the Seeed Studio module uses a low drive, and the STM32WL5MOC uses a high drive for the LSE. It would be nice to be able to unambiguously tell what part is needed so I can set this appropriately. 

Barring that, I'll probably set the drive strength to high in both cases, and lower the drive strength once I peek inside the OTP to find the part number (that I write in manufacturing).

DWalk.3
Associate III

I can only assume that the module development team at ST does not read this forum...

Or not their job... Open a support case, or talk to your local sales rep, or FAE

https://www.st.com/content/st_com/en/support/support-home.html

https://ols.st.com/s/

Tips, Buy me a coffee, or three.. PayPal Venmo
Up vote any posts that you find helpful, it shows what's working..
DWalk.3
Associate III

I apologize to everyone for the snarky post. It was uncalled for. I had a fundamental misunderstanding of the purpose of the forum. In the future, I'll take the approach that @Tesla DeLorean suggested.