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. 04, 2001
Filed:
Sep. 13, 2000
Silicon Access Networks, Inc., San Jose, CA (US);
Abstract
A memory architecture is disclosed that employs multiple column redundancies which provide multiple options for replacing a defective global odd or even bit line. Each column memory has two multiplexers, one for selecting a global odd bit line and another for selecting a global even bit line. Two or more column redundancies are coupled to each of the multiplexer in the column memory. In a first embodiment, the global odd and even bit lines are connected through odd and even sense amps in a regular column. In a second embodiment, the global odd bit line in a regular column connects through odd sense amps, while the global even bit line in the regular column connects through even sense amps. In a third embodiment, two or more sets of redundancy columns are commonly coupled to a left adjacent regular column and a right adjacent regular column.