Patent ID: 8976593
Filing Date: 2015-03-10
Classification: G11C

Abstract:
1. A nonvolatile memory device comprising: a plurality of global word lines; a voltage pump configured to generate a plurality of voltages having different voltage levels; a control unit configured to divide the plurality of global word lines into a first group and a second group in response to an input row address and generate at least first, second, and third control signals for applying voltages corresponding to the first and second groups; a first selection unit configured to output at least two different voltages among the plurality of voltages generated by the voltage pump that are to be applied to global word lines of the first group, in response to the first control signals; a second selection unit configured to output a voltage among the plurality of voltages generated by the voltage pump that is to be applied to global word lines of the second group, in response to the second control signal; and a third selection unit configured to receive output voltages of the first and second selection units, select and apply output voltages of the first selection unit to the global word lines of the first group, and select and apply an output voltage of the second selection unit to the global word lines of the second group in response to the third control signals.