Register shielding in semiconductor devices
US12307002B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2022 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Mar 25, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2141
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor device comprises one or more registers having digital signals stored therein. The semiconductor device is configured for communication with one or more external devices and such communication may involve requests for access to portions of these register or registers. Register shield circuitry is provided comprising access detection circuitry configured to detect requests for access to these register portions in communication with the external device or devices. The register shield circuitry is configured to be selectively activated in a register shield mode to shield these register portions from undesired requests for access. When activated in the register shield mode, the register shield circuitry prevents access to these register portions in response to requests for access detected by the access detection circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.