Ring oscillator having a variable oscillating frequency
US5410278A · kind A · utility
71Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1992 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Dec 18, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/354
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A ring oscillator includes a plurality of inverters, a leakage current generating part, and a current controlling part. The current controlling part supplies the inverters with a source current in accordance with a value of a leakage current generated from the leakage current generating part. The leakage current generated from the leakage current generating part is correlated with a leakage current generated from a memory cell. The oscillating frequency of the ring oscillator can be varied in accordance with the leakage current generated from the leakage current generating part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.