SEMICONDUCTOR MEMORY CIRCUIT

摘要

PURPOSE: A semiconductor memory circuit is provided to be capable of reducing a chip size without lowering a redundancy efficiency. CONSTITUTION: A plurality of memory cell array(240) are disposed in rows and columns. A decoder circuit(250) selects a predetermined memory cell array of the plurality of memory cell arrays. A sense amplifier(260) senses data from the selected memory cell array. The plurality of memory cell arrays is composed of a first type of memory cell arrays having redundant memory cells and a second type of memory cell arrays not having redundant memory cells. A select circuit selects the selected memory cell array or the redundant memory cell array.