Variant operation sequences for multibit memory
US9627072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Sep 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5648
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multiple-bit-per-cell, page mode memory comprises a plurality of physical pages, each physical page having N addressable pages p(n). Logic implements a plurality of selectable program operations to program an addressed page. Logic select one of the plurality of selectable program operations to program an addressed page in the particular physical page using a signal that indicates a logical status of another addressable page in the particular physical page. The logical status can indicate whether the other addressable page contains invalid data. The first program operation overwrites the other addressable page, and the second program operation preserves the other addressable page. The first program operation can execute more quickly than the second program operation. The logic can also be applied for programming multiple-bit-per-cell memory not configured in a page mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.