MULTI-LEVEL ANTIFUSE AND METHOD FOR OPERATION THE SAME

摘要

PURPOSE: A multi-level anti-fuse and an operating method thereof are provided to reduce a size of a chip by decreasing the number of sensors per the anti-fuse. CONSTITUTION: A multi-level anti-fuse includes at least three anti-fuses(100,200,300). At least three anti-fuses includes a plurality of anti-fuses which are connected in parallel and one anti-fuse serially connected to the parallel structure. The resistance of the parallel is lowered than the serially connected anti-fuse. The dielectric layers of the plurality of anti-fuses which are connected in parallel are formed with the different thickness and have different breakdown voltages.