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LPC55S69 : PUF usage

Question asked by Eugene Hiihtaja on Jul 1, 2020
Latest reply on Jul 14, 2020 by ZhangJennie

Hello !


Do I understand right and PUF can work with CoreClock up to 150 Mhz ?

Or some limitation available  like with Flash memory operations ?



It is not so clear about recovery of PUF after PowerDown low power mode ?

Should I execute Init and Start again or just enable clock of PUF ?

Does activation code retains in PUF SRAM ? Or it should be reloaded from storage again ?

What is minimal recovery sequence ?

Full PUF initialization might take a lot of time and may be it should not reinit after every PowerDown cycle, only when it really need.


3. What kind of Keys should be provisioned and loaded to PUF for activate key wrapping functionality ?

   I have own keys what need to be wrapped and reconstructed back and look for minimal PUF initialization sequence.


Thank you !