Semiconductor device performing refresh operation
US8547759B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 2011 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Jan 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/4065
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To provide a semiconductor device including a temperature detection circuit that detects a temperature of the semiconductor device and outputs temperature information, a counter circuit that takes a count of repeated inputs of a refresh command and outputs count information, a comparison circuit that activates a match signal when the temperature information matches the count information, and a refresh control circuit that controls whether to perform a refresh operation according to activation of the refresh command based on the match signal. According to the present invention, a refresh cycle can be finely adjusted because the repeated inputs of the refresh command are thinned out based on the temperature information. With this configuration, power consumption caused by the refresh operation can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.