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:
Jun. 14, 2011
Filed:
Aug. 27, 2008
Chikako Tokunaga, Yokohama, JP;
Kenichi Anzou, Kawasaki, JP;
Chikako Tokunaga, Yokohama, JP;
Kenichi Anzou, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor integrated circuit includes: a memory collars including: a memory cell; a fetch register that is configured to fetch data as a first fetch data; a comparing unit that is configured to compare the first fetch data with an expected value; a failure detecting signal output unit that is configured to receive the compared result and output a failure detecting signal; and a BIST circuit including: a BIST control unit that is configured to output an instruction and output a BIST status; a shift controller that is configured to receive a first clock signal, the BIST status signal, and the failure detecting signal and output sift enable signal; a shift counter that counts the number of clock pulses on the first clock signal; a first storage register that is configured to receive the first clock signal and the shift enable signal, and a second storage register that is configured to receive a second clock signal.