Data storage system with dynamic read threshold mechanism and method of operation thereof
First Claim
Patent Images
1. 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.
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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.
268 Citations
20 Claims
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1. A method of operation of a data storage system comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operation of a data storage system comprising:
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determining a middle read threshold for a memory die; determining 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. - View Dependent Claims (7, 8, 9, 10)
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11. A data storage system comprising:
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a memory die; a controller, coupled to the memory die controlling operation of the data storage system, the controller including; a mapping module for determining a middle read threshold for the memory die; one or more modules 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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification