Patent · US Expired

MRAM semiconductor memory configuration with redundant cell arrays

US6781896B2 · kind B2 · utility

5Cited by

6References

16Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Stefan Lammers · Hersbruck, DE
Dietmar Gogl · South Burlington, US
Gerhard Muller · Grafing, DE

Key dates

Filing date	Apr 30, 2002
Grant date	Aug 24, 2004
Priority date	—
Expiry date	Jul 8, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG11C29/70
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The MRAM semiconductor memory configuration has MRAM main cell arrays in the form of a crosspoint array or a transistor array together with redundant MRAM cell arrays formed of redundant MRAM memory cells arranged in a plurality of planes and provided on the same chip. The redundant MRAM cell arrays are distributed over the individual planes of the memory matrix or one plane of the memory array is used in its entirety for providing redundant cell arrays.

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