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:
Sep. 13, 2005
Filed:
Aug. 05, 2003
Jai P. Bansal, Manassas, VA (US);
Jai P. Bansal, Manassas, VA (US);
BAE Systems, Information and Electronic Systems Integration, Inc., Nashua, NH (US);
Abstract
A method for designing a cell-based ASIC device with multiple power supply voltages is disclosed. An ASIC chip image is made without applying power or ground buses to metal layer M. All fast or high-power circuits are grouped together into high-power logic blocks and synthesized with high-power circuit macro libraries. All slow or low-power circuits are grouped together into low-power logic blocks and synthesized with low power circuit macro libraries. The associate power and ground buses are applied to metal layer Min each of the logic blocks. The logic blocks are placed on the ASIC so that different voltage groups are separated by at least one cell. The ASIC is then routed and tested before the mask is released.