Samsung Electronics Co., Ltd.

Jin-bae Bang

Dae-seok Byeon

Ji-Su Kim

Chung-Ho Yu

Cheon-An Lee

A non-volatile memory device includes a memory cell array including a plurality of memory cells; a page buffer for performing a plurality of read operations and storing results of the read operations, wherein each of the read operations includes at least one sensing operation for selected memory cells from the plurality of memory cells; a multi-sensing manager for determining a number of sensing operations for each of the plurality of read operations and controlling the page buffer to perform the read operations; and a data identifier for identifying a data state of a bit for the selected memory cells based on the results of the read operations, wherein the multi-sensing manager determines the number of sensing operations for at least one read operation from among the read operations to be different from the number of sensing operations for other read operations from among the read operations.

Non-volatile memory device and a method of operating the same

A nonvolatile memory device includes multi-level cells. A sensing method of the nonvolatile memory device includes: precharging a bit line and a sense-out node during a first precharge interval; identifying a first state of a selected memory cell, by developing the sense-out node during a first develop time and sensing a first voltage level of the sense-out node; precharging the sense-out node to a second sense-out precharge voltage; and identifying the first state of the selected memory cell from a second state adjacent thereto, by developing the sense-out node during a second develop time different from the first develop time and sensing a second voltage level of the sense-out node.

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Anyang-si, South Korea

Jin-bae Bang