Technique for adjusting read timing parameters for read error handling
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United States of America Patent
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Jun 21, 2022
Grant Date -
N/A
app pub date -
Mar 26, 2021
filing date -
Mar 26, 2021
priority date (Note) -
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Abstract
Apparatuses and techniques are described for recovering from errors in a read operation. When a read operation results in an uncorrectable read error, recovery read operations are performed for each read voltage of a page of data. Each recovery read operation uses a different timing. The different timings can involve a time period which is allocated for a voltage transition, such as a settling time of a word line or bit line voltage, or a time allocated for an under kick or over kick of a word line or bit line voltage. An error count is obtained for each different timing, and an optimum timing is determined based on the lowest error count. A retry read operation is performed in which an optimum timing is used for the voltage transition for each read voltage of the page.
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