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. 19, 2008
Filed:
Aug. 01, 2005
Larry Fenstermaker, Nazareth, PA (US);
Harold N. Scholz, Allentown, PA (US);
Gregory Cartney, Coplay, PA (US);
Allen White, Austin, TX (US);
Margaret Tait, Austin, TX (US);
Hemanshu T. Vernenker, Austin, TX (US);
Larry Fenstermaker, Nazareth, PA (US);
Harold N. Scholz, Allentown, PA (US);
Gregory Cartney, Coplay, PA (US);
Allen White, Austin, TX (US);
Margaret Tait, Austin, TX (US);
Hemanshu T. Vernenker, Austin, TX (US);
Lattice Semiconductor Corporation, Hillsboro, OR (US);
Abstract
A multiport memory in one embodiment of the invention includes a memory cell array, where each column in the array has two exterior complementary bitline pairs and zero, one, or more interior complementary bitline pairs. Across each pair of adjacent columns in the array, the adjacent exterior bitline pairs are associated with the same port in the multiport memory. In addition, within each column, the two exterior bitline pairs have the same, non-zero number of crossovers, and, across each pair of adjacent columns, the exterior bitline pairs have different numbers of crossovers. Furthermore, each column has at least one reference signal line located between the two exterior bitline pairs.