System countermeasure for read operation during TLC program suspend causing ADL data reset with XDL data
US10832789B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2019 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Jun 13, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2216/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Identifying a faulty memory die in a non-volatile memory storage system. Various methods include: commencing a programming operation of a multi-state block of a subject die, the programming operation including populating a transfer data latch with a first set of data and transferring the data to a first data latch, populating the transfer data latch with a second set of data and transferring the data to second data latch, arranging the first and second data sets in a suitable format of the multi-state block, and writing the data sets to the multi-state block; prior to populating the transfer data latch with the second data set, performing a program suspend and read operation thereby populating the transfer data latch with read data; and comparing the read data to the data contained in the first data latch and, if the comparison results in a match, identifying the subject die as faulty.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.