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:
Nov. 24, 2015
Filed:
Sep. 13, 2012
Seong-ook Jung, Gyeongggi-Do, KR;
Youngdon Jung, Gyeongggi-Do, KR;
Kyungho Ryu, Seoul, KR;
Jisu Kim, Seoul, KR;
Jung Pill Kim, San Diego, CA (US);
Seung H. Kang, San Diego, CA (US);
Seong-Ook Jung, Gyeongggi-Do, KR;
Youngdon Jung, Gyeongggi-Do, KR;
Kyungho Ryu, Seoul, KR;
Jisu Kim, Seoul, KR;
Jung Pill Kim, San Diego, CA (US);
Seung H. Kang, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Industry-Academic Cooperation Foundation, Yonsei University, Seoul, KR;
Abstract
A low sensing current non volatile flip flop includes a first stage to sense a resistance difference between two magnetic tunnel junctions (MTJs) and a second stage having circuitry to amplify the output of the first stage. The output of the first stage is initially pre-charged and determined by the resistance difference of the two MTJs when the sensing operation starts. The first stage does not have a pull-up path to a source voltage (VDD), and therefore does not have a DC path from VDD to ground during the sensing operation. A slow sense enable (SE) signal slope reduces peak sensing current in the first stage. A secondary current path reduces the sensing current duration of the first stage.