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:
Apr. 26, 2011
Filed:
Jun. 19, 2008
Applicants:
Jonathan W. Greene, Palo Alto, CA (US);
Gregory W. Bakker, San Jose, CA (US);
Suhail Zain, San Ramon, CA (US);
Inventors:
Jonathan W. Greene, Palo Alto, CA (US);
Gregory W. Bakker, San Jose, CA (US);
Suhail Zain, San Ramon, CA (US);
Assignee:
Actel Corporation, Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/177 (2006.01);
U.S. Cl.
CPC ...
Abstract
An I/O scheme for an integrated circuit includes a group layout cell. The group layout cell includes a plurality of signal I/O pads. A driver circuit is coupled to each signal I/O pad. The group layout cell also includes two I/O driver-circuit power-supply pads. ESD protection circuitry is coupled to the plurality of driver circuits. The signal I/O pads and the I/O driver-circuit power-supply pads are arranged in rows. The rows may be regular or staggered.