| 摘要 |
An internal voltage generation circuit is provided to enhance stability and reliability of a circuit which uses an internal voltage by reducing a noise generated in a pumping voltage. An internal voltage generation circuit includes a voltage level detecting part(210), a reference oscillation signal generating part(230), an oscillation signal generating part(250), and a pumping voltage generating part(270). The reference oscillation signal generating part generates a reference oscillation signal according to a result in which a pumping voltage is detected. The oscillation signal generating part generates a plurality of oscillation signals based on the reference oscillation signal. The pumping voltage generating part generates a pumping voltage through a successive charge pumping operation in response to a plurality of oscillation signals. A plurality of control signal generating parts generates a plurality of control signals in response to the reference oscillation signal. A plurality of oscillation signal output parts outputs the reference oscillation signal as a plurality of oscillation signals in response to a plurality of control signals.
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