1 2 Semiconductor memory device capable of implementing first or second memory architecture and memory system using the same

摘要

PURPOSE: A semiconductor memory device and a memory system adopting the semiconductor memory device are provided to easily change a memory architecture, and to enhance a redundancy flexibility so that it can reduce a power consumption. CONSTITUTION: The device comprises the first memory group(301), the second memory group(302) and DQ(Data qualifier) pins(310, 320). Each memory group(301, 302) includes four memory banks(B0-B3). Each memory bank outputs eight pieces of data. The eight pieces of data are output to sixteen DQ pins(310, 320) via sixty-four data lines. The number of the actually used data lines is thirty-two. Namely, the eight pieces of data, output by each memory bank(B0-B3), of the first memory group(301) are output to the eight DQ pins(310) via the data bus lines, and the eight pieces of data, output by each memory bank(B0-B3), of the second memory group(302) being output to the eight DQ pins(320) via the data bus lines.