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:
Jul. 25, 2006
Filed:
Sep. 03, 2004
Applicants:
Ramnath Venkatraman, San Jose, CA (US);
Ruggero Castagnetti, Menlo Park, CA (US);
Inventors:
Ramnath Venkatraman, San Jose, CA (US);
Ruggero Castagnetti, Menlo Park, CA (US);
Assignee:
LSI Logic Corporation, Milpitas, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01); G11C 11/00 (2006.01); G11C 7/10 (2006.01); G11C 8/00 (2006.01); H03K 3/03 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit for measuring the performance of a memory cell. The circuit includes a ring oscillator, which includes a plurality of memory cells. The performance of the memory cell can be determined from an oscillation frequency of the ring oscillator. The circuit accurately verifies the performance of the memory cell without modifying the memory cell. This avoids altering the transient AC characteristics of the memory cell when predicting its performance.