Semiconductor integrated circuit having oscillators or oscillation circuits connected to a wiring line at connection points with intervals in length therebetween
US6683503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1998 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Mar 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An oscillation circuit provides clock signals and a clock distribution circuit or system of circuits having low skew and low jitter to logic circuits and memory circuits of a microprocessor or the like. Further, a semiconductor integrated circuit device of high speed is provided as a result of the stable clock signal that is generated and distributed. The oscillation circuit is in a semiconductor integrated circuit device having a plurality of oscillators each having an oscillation node, wherein the oscillation nodes of each of the oscillators are connected together by a conductive wiring line that may be a closed loop. The oscillators are synchronized to oscillate at substantially the same frequency. The oscillators are connected to the conductive wiring line at connecting points having substantially the same interval of conductive wiring lengths between the connection points, which leads to synchronizing the oscillators to oscillate with a substantially identical phase. The conductive wiring line can also be formed in the shape of a mesh with the interval of length of the conductive wiring line between the connection points being at least 50 &mgr;m. The oscillators are ring oscil…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.