Patent ID: 8014225

Claim:
A voltage pump circuit, comprising: a pumping unit including a plurality of pumps and configured to pump a voltage; and a pumping control unit configured to, in response to mode selection signals, generate control signals to select between driving some but not all of the plurality of pumps and driving all of the plurality of pumps wherein the pumping control unit is configured to output a mode determination signal in response to a first mode selection signal for using a first memory matrix and a second mode selection signal for using a second memory matrix, wherein the pumping control unit includes: a plurality of first inverters configured to each receive a respective one of driving signals; at least one mode determiner configured to output the mode determination signal in response to the first mode selection signal and the second mode selection signal; and a plurality of driving controllers configured to output pump off signals to said some but not all of the plurality of pumps respectively in response to output signals of the first inverters and the mode determination signal.