Switchable power domains for 1.2V and 3.3V pad voltages
US6943587B2 · kind B2 · utility
4Cited by
2References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2003 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | May 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0008
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An integrated circuit includes a core circuit and a buffer circuit. The buffer circuit includes a plurality of input buffers and a plurality of output buffers that service a plurality of voltage domains on a single set of input/output lines. These voltage domains are controllable to service multiple voltage levels, consistent with various interface standards. In one construction, the core circuit operates at 1.2 volts and the buffer circuit supports both a 1.2 volts interface standard and a 3.3 volts interface standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.