Eletronic assembly with integrated circuit devices including lock circuitry

摘要

In an electronic assembly, a first integrated circuit device (chip) is provided with a lock circuitry that controls operational enablement of a functional block of the chip. To unlock the lock circuitry, a "chip-key" must be supplied to the chip. The chip is also provided with chip-key output circuit for outputting a chip key associated with one or more other chips of the electronic assembly; the chip-key output circuit may be part of the functional block controlled by the lock circuitry of the same chip.