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. 06, 2005
Filed:
Feb. 12, 2002
Mark Templeton, Los Altos, CA (US);
Dhrumil Gandhi, Cupertino, CA (US);
Mark Templeton, Los Altos, CA (US);
Dhrumil Gandhi, Cupertino, CA (US);
Artisan Components, Inc., Sunnyvale, CA (US);
Abstract
An embedded memory device having improved BISR capabilities is provided. The embedded memory device includes an internal clock signal for use in accessing a memory array having access to redundant memory cells during normal operation, and a stress clock signal, wherein each pulse of the stress clock signal is of a shorter duration than each pulse of the internal clock signal. Further included are a built-in self-test circuit that performs a built-in self-test using the stress clock signal, and a register that stores defective memory addresses detected by the built-in self-test circuit. Redundant control logic is also included that redirects memory access operations to the defective memory addresses to redundant memory cells.