Semiconductor device and method of controlling the same
US7574576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2006 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Dec 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/2022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor device includes: a memory cell array that includes non-volatile memory cells; a first memory region and a second memory region that are located in the memory cell array, the first memory region being protected during a protecting period, the second memory region being not protected; an address change circuit that changes an address in an address space of the first memory region and the second memory region in the memory cell array, to an address in an address space of the second memory region, during the protecting period; and a control circuit that prohibits access to the first memory region, and allows access to the second region, during the protecting period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.