| 摘要 |
PURPOSE: To eliminate a disturbing source by providing a voltage stabilization means between a memory gate and a source region and supplying the source region with such a voltage as the size of a voltage packet has no relation to voltage fluctuation at the memory gate. CONSTITUTION: Clock electrodes 5, 6, 7 and 8 are fed with clock voltagesϕs ,ϕ1 ,ϕ2 ,ϕ3 andϕ4 from a clock voltage supply 25. These clock voltages fluctuate between voltages Vss and Vdd . A voltage Vd being fed to an input diode 3 is taken out from the voltage Vdd through a reference voltage supply 26. The voltage Vd is set at such a level as the voltage difference Vdd -Vd has practically no relation to fluctuation of the Vdd and thereby the quantity of charges being stored on the underside of the gate 6 has practically no relation to fluctuation of the Vdd . Consequently, fluctuation of supply voltage has no effect on the size of a charge packet to be formed.
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