SEMICONDUCTOR MEMORY DEVICE IMPROVING YIELD USING FUSE SET IN REPAIRING

摘要

PURPOSE: A semiconductor memory device is provided to improve yield by improving utilization of a fuse set for substitution the path of low address or column address. CONSTITUTION: A semiconductor memory device includes a plurality of normal cells, a plurality of preliminary cells, and a plurality of normal fuse sets. The normal fuse sets further include a plurality of address fuses(A0-A13), an enable fuse(Col-En) for column address fuse sets, and an enable fuse(Row-En) for low address fuse sets. The low address enable fuse enables the normal fuse set selected by blowing to substitute low address. The column address enable fuse enables the normal fuse set selected by blowing to substitute column address.