Patent ID: 8633758
Filing Date: 2014-01-21
Classification: G05F,G11C,H02M

Abstract:
1. A semiconductor device comprising: a boosting circuit that boosts an internal power supply voltage according to a level of an external power supply voltage; a comparison circuit that compares the external power supply voltage and a reference voltage; and a variable resistor circuit that includes a variable resistor connected to an output terminal of the boosting circuit, the variable resistor circuit further including a first switch element, wherein the variable resistor circuit controls a resistance value of the variable resistor by turning the first switch element ON in response to a first logic level of a comparison result of the comparison circuit and OFF in response to a second logic level of the comparison result of the comparison circuit, the first switch element being configured to make no response to a clock signal and to be kept ON during the first logic level of the comparison result and OFF during the second logic level of the comparison result.