Patent ID: 11894066
Assignee: SK HYNIX INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 5:
6. The method of claim 1, wherein performing the plurality of sensing operations using the plurality of read voltages on the selected page comprises:
storing data stored in the memory cells included in the selected page in a data latch of a corresponding page buffer, respectively:
performing a threshold voltage sensing operation of the memory cells included in the selected page using a first read voltage, and storing first bit data generated as a result of sensing in a sensing latch included in a corresponding page buffer, respectively;
transmitting the first bit data stored in the sensing latch to a corresponding sense out node;
generating first target bit data from the first bit data by applying a control signal corresponding to the target state to a plurality of page buffers;
storing the first target bit data in a cache latch included in a corresponding page buffer, respectively;
performing the threshold voltage sensing operation of the memory cells included in the selected page using a second read voltage, and storing second bit data generated as a result of sensing in a sensing latch included in a corresponding page buffer;
transmitting the second bit data stored in the sensing latch to a corresponding sense out node;
generating second target bit data from the second bit data by applying the control signal corresponding to the target state to the plurality of page buffers; and
storing a result of an exclusive OR (XOR) operation on the first target bit data and the second target bit data stored in the cache latch, in the cache latch.