METHOD AND APPARATUS FOR ENHANCEMENT OF SAFETY OF INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for improving the safety of an integrated circuit. SOLUTION: This method for improving the safety of the integrated circuit provided with at least one microprocessor and one or plural safety sensors C1-C3 for detecting an abnormal operating state and constituted so as to store the states of the respectively corresponding sensors by registers accessible by the microprocessor is presented. The method executes a read operation after the lapse of random time when the microprocessor receives an instruction for reading the register for at least one of the registers.