Patent ID: 8675422
Filing Date: 2014-03-18
Classification: G11C

Abstract:
1. A semiconductor device comprising: an internal circuit; and an internal voltage generation circuit stabilizing an internal voltage to be supplied to the internal circuit against a variation of a power voltage supplied to the internal voltage generation circuit; wherein the internal voltage generation circuit stops stabilizing the internal voltage when the power voltage is greater than a predetermined value so that the internal circuit is allowed to be supplied with the internal voltage that is subject to the variation of the power voltage, wherein the internal voltage generation circuit includes: a reference voltage generation circuit configured to generate a first control voltage that is stabilized against the variation of the power voltage and a second control voltage that is varied dependently on the variation of the power voltage; and a comparison circuit comparing a feedback voltage related to the internal voltage with the first control voltage to produce the internal voltage stabilized against the variation of the power voltage, the comparison circuit further comparing the feedback voltage with the second control voltage to stop stabilizing the internal voltage.