SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND CONTROL METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To basically prevent normal operation of a defective chip. SOLUTION: This semiconductor integrated circuit device is provided with a chip operation disablement control circuit 10 provided with a fusing section in which it is decided whether cutting is performed or not in a manufacturing process conforming to judgment of a good or defective chip and of which one end is connected to a first power source, and a signal generating section which is connected between the other end of this fusing section and a second power source and generating a discrimination signal indicating whether it is a defective chip or not conforming to existence of cutting of the fusing section and supplying the discrimination signal to at least one out of chip internal function circuits 11-14, in the chip. Then the chip internal function circuit is activated or non- activated based on the value of a discrimination signal.