Semiconductor memory has sub word selecting circuit which switches selection of sub word selection line of memory cell array arranged on corresponding substrate plates using drivers

摘要

A sub word selecting circuit (124) provided in the semiconductor memory, switches selection of a sub word selection line of the redundant memory cell array arranged on the corresponding plates (n,n+1) of memory cell array group using redundancy sub word drivers (222a-222e). An Independent claim is included for semiconductor memory redundancy circuit replacement method.