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. 24, 2004
Filed:
Feb. 14, 2002
Stephen R. Cebenko, New Tripoli, PA (US);
David A. Rhein, Reading, PA (US);
John A. Schadt, Bethlehem, PA (US);
Brian W. Yeager, Schuykill Haven, PA (US);
Warren L. Ziegenfus, Emmaus, PA (US);
Lattice Semiconductor Corporation, Hillsboro, OR (US);
Abstract
A base transistor structure and associated programmable cell library compatible with standard cell computer-aided design (CAD) tools are disclosed. In an illustrative embodiment of the invention, the base transistor structure is symmetric about one or more axes, and extends only a single grid of a standard cell CAD tool in width. The base transistor structure is advantageously configured in a manner that permits the utilization of gate isolation to separate active transistors in adjacent base transistor structures. The base transistor structure can be used to implement a programmable cell technology that is fully compatible with standard cell CAD tools.