| 摘要 |
PROBLEM TO BE SOLVED: To perform pre-charge operation after equalization and to prevent power consumption by transmitting the data loaded to a first bit-line to a sense amplifier, selectively connecting the sense amplifier line with first, second control signals and selectively connecting the sense amplifier line with third, fourth control signals. SOLUTION: First, second bit line cut-off signals BISH1, BISH2, BISL1, BISL2 are made a high state, and a bit line pre-charge voltage VBLP of a half (Vcc) is applied to first, second bit lines BITH, /BITH, BITL, /BITL and the sense amplifier lines SA, /SA. Then, second bit line cut-off signals BISL1, BISL2 are enabled, and the second bit lines BITL, /BITL are connected to the sense amplifier lines SA, /SA, and by conducting the pre-charge operation, the power will not be consumed in a pre-charge process.
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