The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2006
Filed:
Jan. 15, 2004
Stefan Lammers, South Burlington, VT (US);
Hans-heinrich Viehmann, South Burlington, VT (US);
Thomas M. Maffitt, Burlington, VT (US);
John E. Barwin, Jeffersonville, VT (US);
Stefan Lammers, South Burlington, VT (US);
Hans-Heinrich Viehmann, South Burlington, VT (US);
Thomas M. Maffitt, Burlington, VT (US);
John E. Barwin, Jeffersonville, VT (US);
Infineon Technologies AG, Munich, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
The write path of an MRAM device is precharged before starting a write operation of a magnetic memory cell, increasing the speed of the write operation and decreasing the write cycle time. The reference wires are precharged, which provides better control over the wordline and bitline write pulses and results in shorter rise times. The precharge time can be hidden in the address decoding time or redundancy evaluation time. A circuit design for a global reference current generator is also described herein. A fast on circuit is also disclosed that increases the speed of precharging the reference wires.