Semiconductor device with double program prohibition control
US8219743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2011 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Mar 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a semiconductor device and a method for controlling the semiconductor device, the semiconductor device including memory regions; program prohibition information units storing program prohibition information to be used for determining whether to prohibit or allow programming in the memory regions corresponding to the program prohibition information units; a first prohibition information control circuit that prohibits a change of the program prohibition information from a program prohibiting state with respect to a memory region based on first prohibition information; and a second prohibition information control circuit that prohibits a change of the program prohibition information from a program allowing state to a program prohibiting state with respect to the corresponding memory region based on second prohibition information with respect to the corresponding memory region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.