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:
May. 09, 2006
Filed:
Jan. 19, 2005
Ruggero Castagnetti, Menlo Park, CA (US);
Ramnath Venkatraman, San Jose, CA (US);
Joseph E. Glenn, Eden Prairie, MN (US);
Ruggero Castagnetti, Menlo Park, CA (US);
Ramnath Venkatraman, San Jose, CA (US);
Joseph E. Glenn, Eden Prairie, MN (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
Two new ternary CAM bitcell design options are presented that provide compact layout solutions while maximizing matchline channels routing through the cells. In both layouts, the first inventive layout, an asymmetric layout of the 6T-SRAM bitcell is used to improve ease of layout, density, and performance of ternary CAM cells. In the second inventive layout, n-type diffusions for the SRAM bitcell and the comparison circuit are separated, creating a bitcell having a more even cell aspect ratio.