The function of the memory OTP area in STM32

[robin-xiaoyong]

Posted on June 10, 2014 at 05:40

What is the function of the memory OTP area  in STM32?When do we use the memory OTP area?

[Tesla DeLorean]

Posted on June 10, 2014 at 05:52

Serial numbers, encryption keys, calibration or manufacturing data, etc

[robin-xiaoyong]

Posted on June 10, 2014 at 07:42

Thank you.And the data in OTP area can not be modified.Is it right?

[Tesla DeLorean]

Posted on June 10, 2014 at 15:04

And the data in OTP area can not be modified. Is it right?

Actually I think it can be ''modified'' in that any ONE bits can be changed to ZERO bits, but you can't erase it, and you can't reprogram it with arbitrary bytes. You could checksum/crc the area, or write a byte, and it's inverse.