Patent · US Expired

Refresh drive circuit for a DRAM

US6404690B2 · kind B2 · utility

12Cited by

3References

5Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Bret Johnson · Folsom, US
Robert Kaiser · Kaufering, DE
Helmut Schneider · Hersbruck, DE

Key dates

Filing date	Apr 30, 2001
Grant date	Jun 11, 2002
Priority date	—
Expiry date	Apr 30, 2021

Classification

Technology area (CPC G)Physics
CPC primaryG11C11/406
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A refresh drive circuit for feeding refresh signals to a memory device has a refresh signal generator for generating a continuous sequence of refresh signals with a frequency which decreases as the temperature falls. The refresh drive circuit is connected to the memory device and as the temperature of the memory device falls, the frequency of refresh cycles decreases resulting in a decrease in current consumption.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.