Patent ID: 7928798
Filing Date: 2011-04-19
Classification: G05F,G11C

Abstract:
1. An internal voltage generation device comprising: an internal voltage generator being enabled in response to an enable signal, the internal voltage generator configured to generate an internal voltage using a reference voltage; a multi-word line enable signal generator configured to receive a self-refresh mode signal, which is activated when a semiconductor device including the internal voltage generation device enters a self-refresh mode in which operations are performed by the semiconductor device for retention of information stored therein, and a test mode signal, and generate a multi-word line enable signal, wherein the multi-word line enable signal is enabled when a self-refresh mode is entered in a state that the test mode signal is enabled; and a sub-voltage generator configured to drive an output terminal of the internal voltage generator to a predetermined voltage level when the multi-word line enable signal is enabled and a divided level of an internal voltage becomes lower than a reference voltage.