Patent ID: 11887672
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. An operation method of a nonvolatile memory device, the method comprising:
receiving a read command from an external device;
in response to the read command:
applying, while a precharge operation is performed on a plurality of bit lines, a precharge voltage to at least one dummy bit line present between the plurality of bit lines and a common source line,
providing a ground voltage, differing from the precharge voltage, to the at least one dummy bit line while a sensing operation is performed on the plurality of bit lines, and
performing a read operation;

receiving an erase command from the external device;
in response to the erase command, floating the at least one dummy bit line, electrically connecting the at least one dummy bit line and the common source line, or applying an erase voltage to the at least one dummy bit line; and
performing an erase operation in response to the erase command.