| 摘要 |
PURPOSE: A semiconductor memory device is provided to reduce a row operation cycle by pre charging a word line during a data read operation. CONSTITUTION: A semiconductor memory device comprises a plurality of sense amplifier array parts(11,12,13,14), a plurality of memory cell array parts(21,22,23,24), and a static ram cache part. A plurality of sense amplifier array parts(11,12,13,14) sense data, respectively. Data is read or written from or to the plurality of memory cell array parts(21,22,23,24). Data is temporally stored in the static ram cache part. A word line is pre charged during a data read operation by the use of a sense amplifier array part previously designated by a mode register among the sense amplifier array parts.
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