Method and apparatus for maintaining an accurate I/O calibration cell
US9472246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2012 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Nov 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/2254
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An integrated circuit includes an input/output “I/O” cell arranged to drive an output signal and an activity analysis unit arranged to generate an activity factor based on the output signal. The activity factor represents a switching activity intensity of the I/O cell. The switching activity intensity is associated with an ageing effect of the I/O cell. The circuit further includes a calibration unit arranged to generate a switching pattern signal based on the generated activity factor and an I/O calibration cell arranged to be driven by the switching pattern signal, wherein the switching pattern signal emulates the ageing effect of the I/O cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.