| 摘要 |
PURPOSE: A dynamic random access memory is provided to improve operation speed and to reduce consumption power. CONSTITUTION: A dynamic random access memory comprises a sense amplifier(100), a first switching part(310), a second switching part(320), a third switching part(410), a fourth switching part(420) and a bit-line isolation controller. The sense amplifier(100) senses data from bit lines and amplifies the sensed data. The first switching part(310) connects a positive bit line of a high block to a positive input/output terminal of the sense amplifier(100) according to a control signal(Bish). The second switching part(320) connects a negative bit line of the high block to a negative input/output terminal of the sense amplifier(100) according to the control signal(Bish). The third switching part(410) connects a positive bit line of a low block to the positive input/output terminal of the sense amplifier(100) according to a control signal(Bisl). The fourth switching part(420) connects a negative bit line of the low block to the negative input/output terminal of the sense amplifier(100) according to the control signal(Bisl). The bit-line isolation controller enables one of the switching parts, and disables the other switching parts before a selected word line is activated.
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