Patent ID: 11894068
Assignee: SANDISK TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 15:
16. The method of claim 15, further comprising:
prior to performing the third sensing operation, biasing the on non-volatile memory cells at a second voltage level and pre-charging, for each of the non-volatile memory cells, a corresponding sense node to a second level, wherein performing the third sensing operation for each of the non-volatile memory cells includes:
discharging the corresponding sense node pre-charged to the second level through the memory cell biased at the second voltage level for a second sensing interval; and
distinguishing between the third data state and the fourth data state based on an amount that the sense node discharges during the second sensing interval, and

wherein the performing the fourth sensing operation for each of the non-volatile memory cells determined to be in the fourth data state includes:
continuing to discharge the corresponding sense node pre-charged to the second level through the memory cell biased at the second voltage level for a second additional sensing interval; and
determining the reliability of the third sensing based on an amount that the sense node discharges during the combined second sensing interval and second additional sensing interval.