Semiconductor integrated circuit device
US8253481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2011 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Sep 25, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to perform fine low-voltage control without largely increasing the circuit layout area in a low-power consumption structure. In the case of shifting a region to a low-speed mode, a system controller outputs a request signal and an enable signal to a power switch controller and a low-power drive circuit, respectively, to turn off a power switch and to perform a control so that the voltage level of a virtual reference potential becomes about 0.2 V to about 0.3V. The region operates on voltages between a power supply voltage and a virtual reference potential, so that it is controlled in the low-speed mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.