Semiconductor storage device
US7136313B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2005 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Jun 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/4402
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To provide a semiconductor storage device which can adapt to assembly processes involving different treatment temperatures, can become unrewritable when rewriting of data by the user is prohibited, negates the necessity for developing different semiconductor storage devices, and lowers development cost.A semiconductor storage device is provided with, as areas for storing faulty address information indicating a faulty area and operation mode setting information about the semiconductor storage device, a first setting function storage area 103 formed from electrically-rewritable nonvolatile memory and a second setting function storage area 102 formed from once-rewritable nonvolatile memory. Transfer of faulty address information to a faulty address register 111 and transfer of operation mode setting information to an operation mode register 110 are selectively performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.