Patent ID: 8692607
Filing Date: 2014-04-08
Classification: G11C

Abstract:
1. A semiconductor device comprising: an oscillation circuit configured to produce an oscillator signal; an internal voltage generating circuit including first and second charge pump circuits each including an output node coupled to a common node; a first control circuit configured to receive the oscillator signal and produce a first control signal and a second control signal; a second control circuit configured to receive the oscillator signal and the first control signal to operate the first charge pump circuit; and a third control circuit configured to receive the oscillator signal and the second control signal to operate the second charge pump circuit, wherein the first control signal includes a first activation signal to activate the first charge pump circuit and a first inactivation signal to inactivate the first charge pump circuit, wherein the second control signal includes a second activation signal to activate the second charge pump circuit and a second inactivation signal to inactivate the second charge pump circuit, and wherein the first control circuit is configured to produce the first and second activation signals independently to each other, and produce the first and second inactivation signals independently to each other.