Patent · US Expired

Pseudostatic memory circuit

US6909657B2 · kind B2 · utility

3Cited by

2References

11Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Andreas Jakobs · Birkenfeld, DE
Thomas Janik · Hersbruck, DE
Manfred Menke · Ritterhude, DE
Eckehard Plättner · Hersbruck, DE

Key dates

Filing date	Sep 30, 2003
Grant date	Jun 21, 2005
Priority date	—
Expiry date	Sep 30, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG11C11/40611
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A psuedostatic memory circuit is selected by a memory selection signal. A control circuit, in a first operating mode, carries out a refresh of the memory area at a refresh address after reception of the refresh request signal by generation of a refresh signal if the memory circuit is deselected or if, in the event of selection of the memory circuit by the memory selection signal, the access to the memory area is ended before the generation of a further refresh request signal. The control circuit, in a second operating mode, interrupts an access to the memory area for the writing and read-out of data and carries out a refresh of the memory area by generation of a refresh signal if the memory circuit is selected and a further refresh request signal is received before the ending of the access to the memory area.

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