| 摘要 |
According to one embodiment, a nonvolatile semiconductor storage device having a plurality of operation modes, includes: a plurality of first lines; a plurality of second lines; a plurality of memory cells; a first selection unit that charges the first line to a first selection voltage; and a second selection unit that charges a second line to an unselection voltage and discharges the second line to a second selection voltage after the first line is charged to the first selection voltage by the first selection unit, wherein the second selection unit adjusts at least one of a level of the second selection voltage to which the second line to be selected is to be discharged and a time constant when discharging the second line to be selected, in accordance with an operation mode in which the nonvolatile semiconductor storage device operates among the plurality of operation modes. |
