Input/output driver circuit for isolating with minimal power consumption a peripheral component from a core section
US5561384A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1995 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Nov 8, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/0016
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Within an integrated circuit, an input/output driver circuit is provided. The input/output driver circuit is configured to provide electrical isolation and power savings when the integrated circuit is configured into a computer system such as a personal information device. By providing a mechanism permitting removal of power from the driver circuit, the integrated circuit inhibits current flow from the integrated circuit into a powered-down peripheral device. A force term is activated, when electrical isolation is desired, to inhibit current flow into or from the integrated circuit via an input/output pad voltage level. A power savings is enabled by allowing the power down of peripheral devices coupled to the integrated circuit without the need for external buffer circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.