Circuit and method for using the I.sup.2 C serial protocol with multiple voltages
US6078192A · kind A · utility
6Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1997 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Sep 18, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4068
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method wherein networked communications devices having different operating voltages share information according to the I.sup.2 C protocol, using unidirectional level shifters. A first bidirectional line having a first operating voltage shares information according to the I.sup.2 C protocol with a second bidirectional line having a second operating voltage different from the first operating voltage, where at least one of the bidirectional lines is split into two lines and connected to the other bidirectional line via unidirectional level shifters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.