Asymmetric read sense
US11656789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2021 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Dec 26, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage device includes a memory device including a plurality of wordlines, each including a plurality of cells, and a cell statistics generator (CSG) disposed on the memory device. The CSG includes logic configured to receive a first read sense at a threshold voltage of one or more threshold voltages of each cell of a wordline of the plurality of wordlines, determine that a second read sense is required based on the first read sense, receive the second read sense, determine a deviation parameter and a dispersion parameter for an asymmetric adjustment of the left threshold voltage and the right threshold voltage, and adjust the left threshold voltage and the right threshold voltage based on the deviation parameter and the dispersion parameter. The second read sense includes a plurality of left read senses at a left threshold voltage and a plurality of right senses at a right threshold voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.