Semiconductor integrated circuit with stepped-up voltage pump circuit
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United States of America Patent
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Feb 26, 2008
Grant Date -
Sep 15, 2005
app pub date -
May 12, 2005
filing date -
Jun 27, 2003
priority date (Note) -
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Abstract
A semiconductor integrated circuit includes a pump circuit configured to raise an external power supply voltage to generate a stepped-up voltage, and a detector circuit configured to detect the stepped-up voltage generated by the pump circuit to control activation/deactivation of the pump circuit, wherein the detector circuit includes a differential amplifier configured to compare the stepped-up voltage with a reference voltage, and a current control circuit configured to control an amount of a bias current running through the differential amplifier in response to the activation/deactivation of the pump circuit.
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