Data storage system with dynamic read threshold mechanism and method of operation thereof
AssigneeSmart Storage Systems, Inc.
InventorsJames Fitzpatrick, Mark Dancho, James M. Higgins, Robert W. Ellis
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Abstract
A system and method of operation of a data storage system includes: a memory die for determining a middle read threshold; a control unit, coupled to the memory die, for calculating a lower read threshold and an upper read threshold based on the middle read threshold and a memory element age; and a memory interface, coupled to the memory die, for reading a memory page of the memory die using the lower read threshold, the middle read threshold, or the upper read threshold for compensating for a charge variation.
Claims20
A method of operation of a data storage system comprising:
- determining a middle read threshold for a memory die;
- calculating a lower read threshold and an upper read threshold based on the middle read threshold and a memory element age;
- and
- reading a memory page of the memory die using the lower read threshold, the middle read threshold, or the upper read threshold for compensating for a charge variation.
A method of operation of a data storage system comprising:
- calculating a middle read threshold for a memory die;
- retrieving a memory element age for the memory die;
- calculating a lower read threshold and an upper read threshold based on the middle read threshold and the memory element age;
- and
- reading a memory page of the memory die using the lower read threshold, the middle read threshold, or the upper read threshold for compensating for a charge variation.
A data storage system comprising:
- a memory die for determining a middle read threshold;
- a control unit, coupled to the memory die, for calculating a lower read threshold and an upper read threshold based on the middle read threshold and a memory element age;
- and
- a memory interface, coupled to the memory die, for reading a memory page of the memory die using the lower read threshold, the middle read threshold, or the upper read threshold for compensating for a charge variation.
Dependencies are inferred from the claim text.