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:
Mar. 04, 2003
Filed:
Jun. 04, 2002
Applicant:
Inventors:
Chi-Feng Wu, Kaohsiung, TW;
Chih-Wea Wang, Taipei Hsien, TW;
Jin-Fu Li, Hsin Yuan Hsiang, TW;
Cheng-Wen Wu, Hsinchu, TW;
Chung-Chiang Teng, Hu-Kou Hsiang, TW;
Chih-Kang Chiu, Chu-Pei, TW;
Assignee:
Faraday Technology Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 7/00 ;
Abstract
A built-in programmable self-diagnostic circuit for finding and locating faults in a static random access memory (SRAM) unit. The circuit includes a plurality of multiplexers, a demultiplexer, a test pattern generator, a fault location indicator and a controller. The circuit uses either internal test instructions or pre-programmed test instructions to test the SRAM unit so that the exact location of any fault in the SRAM unit can be found and subsequently repaired.