Semiconductor storage device comprising electrically rewritable nonvolatile semiconductor memory
US8681554B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jul 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7211
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor storage apparatus stores management information comprising, for each block of a nonvolatile semiconductor memory, information denoting at least one of a recent programming time, which is a time at which data is recently programmed to a block, and a recent erase time, which is a time at which an erase process is recently carried out with respect to a block. The semiconductor storage apparatus (b1) controls a timing at which data is programmed to a block based on at least one of the recent programming time and the recent erase time of this block, and/or (b2) controls a timing at which an erase process is carried out with respect to a block based on the recent programming time of this block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.