Synthesized clock microcomputer with power saving
US4893271A · kind A · utility
165Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1987 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Feb 26, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A microcomputer having predetermined clock pulse frequency requirements receives pulses from a multiplying type frequency synthesizer which utilizes a reference frequency less than the largest of the predetermined requirements. The synthesizer is responsive to program instructions to generate clock pulse frequencies sufficient to satisfy the requirement for immediate execution of programmed tasks. As the requirements change, the synthesizer responds to provide only the frequency required. Thus, the power dissipated by the microcomputer system is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.