An internal voltage generator when activated, generates an internal voltage to be supplied to an internal circuit. Operating the internal voltage generator consumes a predetermined amount of the power. In response to a control signal from the exterior, an entry circuit inactivates the internal voltage...http://www.google.com.tw/patents/US8130586?utm_source=gb-gplus-share專利 US8130586 - Semiconductor memory device and method of controlling the same
