FAQs
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

STM32H755xI - OTP support

Muthukrishnan
Visitor

‎2025-08-29 6:41 AM - last edited on ‎2025-08-29 7:01 AM by

Hi @Amel NASRI ,

Does STM32H755xI support OTP (One Time Programmable) memory in it's flash like STM32BH7B3x?

Muthukrishnan

Labels:
0 Kudos
2 REPLIES 2
STTwo-32
ST Employee

‎2025-08-29 7:12 AM - edited ‎2025-08-29 7:14 AM

Hello @Muthukrishnan and welcome to the ST Community

According to the DS12919, there is not an OTP memory on the STM32H755xl.

Best Regards.

STTwo-32

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.

Muthukrishnan
Visitor
In response to STTwo-32

‎2025-08-29 7:36 AM - last edited on ‎2025-08-29 7:41 AM by

Hi @STTwo-32 , thanks for the quick response. We were using STM32H7B3xI where it supports OTP and we were storing some secret information there. Now we are upgrading to STM32H755xl and Im surprised this is missing here.

Please help me to understand is there any equivalent features like OTP (One time write/Read only) in STM32H755xl? In the security section, I have seen "active tamper". How does it work?

--Muthukrishnan

0 Kudos
Top