| 摘要 |
A source potential of a pull-up transistor is increased after predetermined time from a rising timing of a word line selection command signal. To this end, a condenser is provided to couple the source potential and gate potential of the pull-up transistor. Preferably a gate potential control transistor that controls the gate potential of the pull-up transistor is a depletion type N-channel field effect transistor that maintains the gate potential at a low level. |
