Abstract:
An erase method of a nonvolatile memory includes supplying an erase voltage to a substrate, supplying a selection word line voltage to word lines connected with a selected sub-block within a memory block of the nonvolatile memory, supplying a non-selection word line voltage to word lines connected with an unselected sub-block within the memory block during a first delay time from a point of time when the erase voltage is supplied, and thereafter floating the word lines connected with the unselected sub-block.
Abstract:
A method of programming a memory cell of a nonvolatile memory device by executing a plurality of program loops comprises detecting whether a loop count or a level of a program pulse to be applied to the memory cell is within a specific range, wherein the specific range is an operation section in which a level of a current peak flowing into the bitline increases up to a reference value or more, charging a bitline of the memory cell at a first charging speed or a second charging speed slower than the first charging speed according to a result of the detection, and applying the program pulse to a wordline of the memory cell.
Abstract:
A driving method of a nonvolatile memory device includes receiving a program command and an address. The method includes changing a number of adjacent zones of a plurality of zones formed of unselected word lines according to a location of a selected word line corresponding to the received address. The method further includes applying different zone voltages to the number of adjacent zones and remaining zones. The nonvolatile memory device includes a plurality of strings formed to penetrate word lines stacked on a substrate in a plate shape.
Abstract:
A method of reading a nonvolatile memory device including: applying a read voltage to a selected wordline of the nonvolatile memory device; applying a read pass voltage to unselected wordlines of the nonvolatile memory device; sensing a state of a memory cell connected to the selected wordline; and applying the read pass voltage to the selected wordline after the sensing.
Abstract:
A program method of a nonvolatile memory device is provided, which includes programming a memory cell in one string selected from a plurality of vertical strings; determining whether a mode of operation of the nonvolatile memory device is a pre-pulse mode; when the mode of operation is determined to be the pre-pulse mode, applying a pre-pulse having a predetermined level to a string selection line connected with a gate of a string selection transistor of at least one unselected vertical string of the plurality of vertical strings for a particular time period; and performing a verification operation on the programmed memory cell.