Interface circuit and electronic device
US7626421B2 · kind B2 · utility
0Cited by
3References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 2, 2007 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Nov 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/017509
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An interface circuit and an electronic device are used for expanding an output port of a micro processing unit. The interface circuit includes an input port electrically connected to the output port of the micro processing unit for receiving a control signals, and a plurality of output ports selectively driven to control external circuits by inputting different values of the control signal at the input port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.