SEMICONDUCTOR MEMORY PROVIDED WITH REDUNDANCY CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor memory having a redundancy circuit substituted for a redundancy cell corresponding to a defective type of a memory. SOLUTION: A semiconductor memory comprises a redundancy memory cell and a fuse circuit having three output states being different each other according to an input signal, and is provided with a redundancy circuit having a redundancy word line decoder substituting for a redundancy cell corresponding to a defective type generated in a normal cell by controlling cutting of a fuse according to an input signal.