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:
May. 31, 2011
Filed:
Dec. 22, 2008
Kazuo Otsuga, Kokubunji, JP;
Kenichi Osada, Tokyo, JP;
Yusuke Kanno, Kodaira, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
A scan chain configuration and a control method for the same are provided, which are optimized for the leakage current reduction technique by a vector input in SoC in which many functional blocks are mounted. The semiconductor integrated circuit includes: plural power domains (Area-AreaN) which have plural functional blocks; power switches (PSW-PSWN) which can supply a power source for operation to the power domains; a scan chain provided for every power domain, and a memory unit (VEC) which supplies, to a scan chain, a vector to enable shifting to a low-leakage state. By re-coupling the scan chain only to a non-operating functional block, it is possible to perform shifting to a low-leakage state for a short time.