Low power CAM match line circuit
US6373738B1 · kind B1 · utility
97Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2000 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Nov 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A Match-Detection Circuit and Match-Detection method, for low-power-consuming searches in a Content Addressable Memory. A HIT is output when the Match Line rises from a Low voltage level to a higher Match Detection Voltage. The Match Detection Voltage is approximately the conducting threshold voltage of an N-channel Field Effect Transistor (FET), and is normally less than One Half of the Power Supply Voltage. Circuits and methods to turn of the through-current in each MISS-ing entry by a carefully timed control signal at the end of a brief Match Detection Period, are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.