System and method for erase detection before programming of a storage device
US9792998B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2016 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Mar 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3427
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for detecting program disturb and for programming/reading based on the detected program disturb are disclosed. Program disturb comprises unintentionally programming an unselected section of memory during the program operation of the selected section of memory. To reduce the effect of program disturb, the section of memory is analyzed in a predetermined state (such as the erase state) for program disturb. In response to identifying signs of program disturb, the voltages used to program the section of memory (such as the program verify levels for programming data into the cells of the section of memory) may be adjusted. Likewise, when reading data from the section of memory, the read voltages may be adjusted based on the adjusted voltages used for programming. In this way, using the adjusted programming and reading voltages, the effect of program disturb may be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.