AN ELECTRONIC DEVICE AND A COMPUTER PROGRAM PRODUCT

摘要

An electronic device 10 comprises a secured module 16 arranged to store secured data. A component 17 outside the secured module 16 has a normal operating mode with a normal mode operating voltage. An interface 12 is arranged to provide access to the secured module 16. A voltage monitoring unit 13 is connected to the component 17 and arranged to monitor an operating voltage Vsup of the component. An interface control unit 14 is connected to the voltage monitoring unit and the interface. The interface control unit 14 is arranged to inhibit access to the secured module through the interface when the operating voltage is below a predetermined secure access voltage level, the secure access voltage being higher than the normal mode operating voltage.