INTEGRATED CIRCUIT HAVING A SECURITY FUNCTION, CHIP CARD USING THE SAME AND METHOD FOR CONTROLLING THE OPERATION OF AN INTEGRATED CIRCUIT

摘要

P A smart card includes a multiplicity of detectors (11 ∼ 14) to detect abnormal operating conditions of the card. If an abnormal condition is detected by one of the detectors, this detects a detection signal (DET0 ∼ DET3) which is then stored in a non-volatile memory (100). A restore signal (RST) is then generated in response to the detection signal to restore a central processing unit (31). The central processing unit indicates to a user the existence of a restored state and a cause thereof. / P