Special mode control method for dynamic random access memory
US5410507A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1992 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Nov 16, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4074
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A dynamic RAM provided with a data retention mode intended for low power consumption is provided. In the data retention mode, the current supply capabilities of voltage generation circuits which generate decreased voltage, increased voltage, reference voltage, etc., are limited in the range in which information retention operation in memory cells can be maintained, and the number of selected memory mats in the data retention mode is increased with respect to that of memory mats selected in the normal read/write mode and refresh mode. Special modes such as the data retention mode are set by combining an address strobe signal and other control signals and dummy CBR refresh is executed to release the special mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.