Monitoring and compensating for real time local circuit speed in an integrated circuit
US7714670B1 · kind B1 · utility
2Cited by
5References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2008 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jun 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integrated circuit comprises an oscillator that generates an oscillator signal. A first counter generates a first count based on transitions of the oscillator signal. A first circuit generates a match signal based on the first count and a reference count. A second counter generates a second count that is initialized at a starting count and adjusts the second count based on transitions of a reference clock signal. An output circuit outputs an oscillator speed based on the second count and the match signal. The oscillator speed is defined by a range that is independent of a frequency of the reference clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.