Patent ID: 11915763
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G  H

Claim 19:
20. An operating method of a nonvolatile memory device, the nonvolatile memory device including a memory cell region including a first metal pad, and a peripheral circuit region including a second metal pad and vertically connected to the memory cell region by the first metal pad and the second metal pad, the operating method comprising:
receiving a preprogram command and multi-page data from a memory controller, wherein the multi-page data includes a plurality of multi-bit data;
preprogramming the multi-page data to a plurality of memory cells connected to a first word line of the nonvolatile memory device, in response to the preprogram command, wherein each of the plurality of memory cells is preprogrammed to have a threshold voltage according to a corresponding one of the plurality of multi-bit data, and wherein the threshold voltage corresponds to one of a plurality of preprogrammed states;
generating a state group code based on the plurality of multi-bit data of the multi-page data, wherein the state group code includes a plurality of state group data, and wherein each of the plurality of state group data has less number of bits than a corresponding one of the plurality of multi-bit data of the multi-page data; and, backing up the state group code to the nonvolatile memory device when sudden power-off occurs after the memory cells are preprogrammed.