Semiconductor device
US7952405B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2009 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Jun 29, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/0816
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A semiconductor device for providing a reliable data valid window includes a drive control unit configured to output a driving power control signal in response to an internal clock and a command signal; a sub-drive voltage supply unit configured to supply sub-drive voltages; a main drive unit configured to generate a delay-locked loop (DLL) clock by driving the internal clock with a main drive voltage; a sub-drive unit configured to drive the internal clock with the sub-drive voltage in response to the driving power control signal; and a data output driver configured to drive and output a data signal in sync with the DLL clock, wherein the main drive unit and the sub-drive unit share their output terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.