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:
Aug. 23, 2016
Filed:
Aug. 15, 2014
Applicant:
Synopsys, Inc., Mountain View, CA (US);
Inventors:
Raymond Tak-Hoi Leung, Palo Alto, CA (US);
Tzong-Kwang Henry Yeh, Los Gatos, CA (US);
Shih-Yao Christine Sun, San Jose, CA (US);
Jamil Kawa, Campbell, CA (US);
Assignee:
Synopsys, Inc., Mountain View, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 29/50 (2006.01); G11C 11/41 (2006.01);
U.S. Cl.
CPC ...
G11C 29/50 (2013.01); G11C 11/41 (2013.01); G11C 2029/5002 (2013.01);
Abstract
A sensor circuit is used to provide bit-cell read strength distribution of an SRAM array. A current-mirror circuit mirroring the bit-line current of an SRAM array is used to power the sensor circuit. A reference current representing nominal bit-cell read current is used as a reference. The current-mirror circuit senses the bit-line current. The current-mirror and the ring oscillator are not part of the bit-line read path.