NON-VOLATILE MEMORY DEVICE, OPERATING METHOD THEREOF, MEMORY SYSTEM INCLUDING THE NON-VOLATILE MEMORY DEVICE, AND OPERATING METHOD OF THE MEMORY SYSTEM

摘要

An operating method of a non-volatile memory device having a string including a plurality of memory cells and a plurality of auxiliary cells, the plurality of memory cells and the plurality of auxiliary cells being connected in series, includes detecting a threshold voltage of at least one of the plurality of auxiliary cells and generating an output signal corresponding to a deterioration level of the plurality of memory cells, based on the threshold voltage.

主权项

1. An operating method of a non-volatile memory device comprising a string having a plurality of memory cells and a plurality of auxiliary cells, the plurality of memory cells and the plurality of auxiliary cells being connected in series, the operating method comprising:
detecting a threshold voltage of an auxiliary cell among the auxiliary cells; and generating an output signal corresponding to a deterioration level of the plurality of memory cells, based on the threshold voltage.