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NXP/ST Power Architecture: How to write to the OTP memory?

03-Aug-2021

Best method to write to the One-Time-Programmable (OTP, also shadow, TEST, UTEST) Memory regions is by running a script, which uses isystem.connect API to connect to winIDEA. 

 It is recommended to verify the script accuracy before writing to the OTP Memory, since thee OTP Memory can only be programmed once.


Solution: 

1. Make a test write to the RAM memory instead of OTP.

2. Verify that the value is written exactly as you intended.

3. Make a memory write to the OTP memory.

Programming to OTP memory is disabled by default in order to prevent any accidental writes to these regions. 


More resources:

Refer to winIDEA Help to find out how to enable programming of the OTP memory and for the script example.

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