MEMORY DEVICE COMPRISING COLUMN ADDRESS DECODER DEDICATED FOR READ AND WRITE

摘要

PURPOSE: A memory device comprising a column address decoder dedicated for read and write is provided, which maximizes operation frequencies of read and write by using two column address decoders for read and write separately. CONSTITUTION: According to a memory array including a column address decoder, the column address decoder is divided into a column address decoder(YDEC(RD)) dedicated for read and a column address decoder(YDEC(WT)) dedicated for writing. A proceeding direction of an address(Addr.) and a proceeding direction of data(GDB) become equal by the column address decoder dedicated for read during a read operation. And a proceeding direction the address and a proceeding direction of data become equal by the column address decoder dedicated for write.