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:
Oct. 10, 2006
Filed:
Dec. 29, 2000
Robert M. Reinschmidt, Hollis, NH (US);
Ronald W. Choi, Somerville, MA (US);
Robert M. Reinschmidt, Hollis, NH (US);
Ronald W. Choi, Somerville, MA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A mask identification (ID) bit circuit () is disclosed that provides one of two potentials (VGND or VPWR) to a sense node (). A mask ID bit circuit () may include a number of links (-to-) arranged in series. A link (-to-) may include inputs (-and-) and outputs (-and-). In one configuration, inputs (-and-) may be directly coupled to outputs (-and-). In another configuration, inputs (-and-) may be cross coupled to outputs (-and-). Cross coupling inputs (-and-) and outputs (-and-) of a link (-to-) can switch a potential (VGND or VPWR) supplied to a sense node (). The configuration of more than one link (-to-) of a mask ID bit circuit () can be changed, allowing a sense node to be switched between two potential (VGND and VPWR) multiple times. According to an embodiment, n mask ID bit circuits () may provide as many as 2different mask ID codes.