| CPC G11C 16/12 (2013.01) [G11C 11/5628 (2013.01); G11C 16/30 (2013.01)] | 20 Claims |
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1. A memory system for data reclaim, comprising:
a memory; and
a memory controller in communication with the memory,
wherein the memory controller is configured to:
read data from the memory using a preset voltage level based on a page type being read;
record an initial set of program voltages comprising read biases for successful reads of the data from the memory;
determine an initial distribution of the read biases of the initial set of program voltages resulting in the successful reads of the data from the memory;
record over time subsequent sets of the program voltages for the successful reads of the data from the memory;
determine subsequent distributions of the read biases of the subsequent sets of the program voltages; and
based on read bias voltage variations of the read biases for the successful reads betweenof the subsequent distributions and the initial deviation, determine whether to recycle the data in the memory.
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