INTEGRATED CIRCUIT WITH BUILT-IN PROTECTIVE RELAY

摘要

PROBLEM TO BE SOLVED: To prevent access to confidential information. SOLUTION: This integrated circuit has a reference ground voltage Gnd and a power supply voltage Vdd for logical operation and is applied with a high voltage HV. It has a protective device 2 that has, at least, one gate oxide circuit element in combination. The protective device 2 is applied with a logical operation voltage Vdd at the power supply node N of, at least, one of the gate oxide circuit elements when operating normally, but the high voltage VH is applied to break down the gate oxide when malfunctioning.