| 摘要 |
<p>PURPOSE:To prevent start of discharge of a bit line before a potential of a word line is confirmed. CONSTITUTION:Word lines X1-Xi are connected to gates of dummy transistors 210-1 to 210-i respectively. The dummy transistors 210-1 to 210-i are connected in series between a P channel MOS transistor 223 connected between a power supply potential and a ground potential and a ground potential. A potential between the dummy transistors 210-1 to 210-i and the p channel MOS transistor 223 is supplied to a gate of a transistor 224 for discharge, when a potential supplied to a gate is a high level, the transistor 224 for discharge make bit lines 230 and 231 discharge to a ground potential.</p> |
