Semiconductor memory including address multiplexing circuitry for changing the order of supplying row and column addresses between read and write cycles

摘要

A memory system includes a semiconductor memory device having random-access memory cells arranged as an integrated memory cell array, a plurality of bit lines for exchanging data with each of the memory cells, and a plurality of word lines intersecting with the bit lines. The semiconductor memory device is an address multiplexed type device in which a column address for selecting a bit line and a row address for selecting a word line are obtained from a single circuit. In this device, the input order of the column and row addresses during a read cycle differs from that during a write cycle.