Patent ID: 6236261
Filing Date: 2001-05-22
Classification: G11C

Abstract:
In a voltage generation circuit for a semiconductor element, a multi-driving apparatus by a multi-level detection, comprising:a level detection circuit block which receives a step-up voltage VPP or a back-bias voltage VBB as an input, and detects different level potentials;a control circuit block for controlling an operation of each generator of a plurality of generators according to a detected potential by the level detection circuit block said control circuit block including a switching transistor portion which is switched on or off according to a feedback voltage and a level potential output portion which receives an output voltage of the switching transistor portion as an input, and outputs different level potentials through inverters wherein the level potential output portion detects a multi-level by using inverters each having the same switching point and a resistor;an oscillation circuit block which is oscillated by an enable signal generated from the control circuit block and generates electric vibrations; anda generation circuit block which receives a control signal from the control circuit block as an input, and is comprised of said plurality of generators being driven by an oscillation output from the oscillation circuit block.