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:
Oct. 15, 2019
Filed:
Jul. 11, 2018
Globalfoundries Inc., Grand Cayman, KY;
John A. Fifield, Underhill, VT (US);
Eric Hunt-Schroeder, Essex Junction, VT (US);
GLOBALFOUNDRIES INC., Grand Cayman, KY;
Abstract
An array of memory cells in rows and columns with each column having a corresponding reference cell and a corresponding comparator. Each memory cell in a given row and given column is connected to a memory wordline for the row and to a memory bitline for the column. Each reference cell is connected to a reference wordline for the reference cells and to a reference bitline. Each comparator for a column has a current mirror with a reference section connected to the reference bitline for the reference cell for the column and a memory section connected to the memory bitline for the memory cells in the column. Each reference section has a current mirror node and all current mirror nodes in the array are connected to reduce mismatch and improve sensing accuracy. Voltages applied to the memory and reference wordlines are varied to provide accurate single-ended sensing, margin testing, etc.