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:
Dec. 24, 2002
Filed:
Dec. 04, 2001
Patrice Parris, Phoenix, AZ (US);
Bruce L. Morton, Austin, TX (US);
Walter J. Ciosek, Austin, TX (US);
Mark Aurora, Austin, TX (US);
Robert Smith, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A ROM embedded in a multi-layered integrated circuit includes rows of transistor memory cells. For reduced area, each transistor in a row optionally shares a terminal with an adjacent transistor in the row, whereby adjacent transistors share one of a source and a drain. A plurality of contact lines one each connected to each common terminal, serve as address terminals for cells. A plurality of metal layers are connected to the other of the drain or source terminals by filled vias and include a final metal layer defining a metal pad for each of the other terminals. Filled vias couple selected metal pads to selected signal lines to provide “1” outputs from selected cells and signal lines which are not coupled by filled vias to the metal pads provide “0” outputs from selected cells.