[kirrent]

The first datasheet I found for a Cypress FRAM chip gives a required power down rate of at most 30us/V which allows it to continue to provide normal operation protecting data. It's a very easy limitation to live with and engineers often deal with far more difficult problems in unexpected power loss than this.

[kragen]

Yeah, that doesn't sound that bad. Sounds like the kind of thing that often has subtle bugs in the implementation, though.