preventing clone with mcf5441x

[gachen]

HI,

   I search the reference manual , but I can't find any thing like unique chip id.  If there is no such unique id available in chip, how can we design a system that preventing clone? Thanks!

Br, gachen

[TomE · Accepted solution]

External chip with a serial number, like one of the Maxim/Dallas OneWire chips.

Tom

[gachen]

I manage to get a SPI flash with factory OTP, which can be used as a unique id