| 摘要 |
<p>PROBLEM TO BE SOLVED: To lower consumption power and stabilize an operation by providing a first switch for electrically shutting one of a pair of bit lines, a second switch for electrically shutting the other bit line, and a third and a fourth switches connected to the first and second switches in series for shutting the bit lines respectively. SOLUTION: When an address signal is input, an array part A100 is selected and switch elements SW110 and SW111 set to a corresponding bit line precharge means BPC100 and switch elements SW130 and SW131 set to a main sense node precharge means MPC100 are turned off. A word line WL0 is driven and a potential difference is brought about between a pair of bit lines BL and BLb and between a pair of presense nodes PS100 and PS101. A preamplifier part PSA100 is activated to transfer the potential difference to the pair of the presense nodes PS100 and PS101.</p> |
