Nonvolatile storage and erase control
US7564720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2007 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Jan 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/412
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A nonvolatile storage including a plurality of blocks each serving as one unit in erasing operation and performs a plurality of erasing operations successively, the nonvolatile storage comprising: a volatile memory cell array for storing erase setting information on each block, the information indicating whether or not its associated block is a target to be erased; a write amplifier for writing the erase setting information in the volatile memory cell array; a first readout amplifier for reading out the erase setting information on a target block from the volatile memory cell array upon start of the erasing operation; and a second readout amplifier for reading out the erase setting information on a target block from the volatile memory cell array upon start of readout operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.