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:
Jan. 04, 2000
Filed:
Aug. 21, 1997
Applicant:
Inventors:
Yervant David Lepejian, Palo Alto, CA (US);
Hovhannes Ghukasyan, Yerevan, AM;
Lawrence Kraus, San Jose, CA (US);
Assignee:
Credence Systems Corporation, Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365233 ; 36518907 ; 36523003 ; 36523009 ; 365239 ;
Abstract
A BIST function is provided in which both the row address and the column address of a memory to be tested may be selected independently. The present invention provides flexibility in selecting addresses to be tested, improves transition time between rows, and allows determination of which memory address passes or fails the test.