Patent ID: 11894075
Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. The memory device of claim 5, wherein the peripheral circuit is further configured to recover the discarded 1st and nth logic pages of the current programming data by separating the 2n logic states into four groups using read reference voltages VR2n−2, VR2n−1 and VR(2n−1+2n−2), wherein:
the read reference voltage VRM is higher than a threshold voltage of state P(M−1), but lower than a threshold voltage of state P(M), wherein M=2n−1, 2n−2, and 2n−1+2n−2; and
the logic states in each group are distinct based on remaining logic pages of the current programming data and the mapping scheme.