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:
Jul. 24, 2007
Filed:
Jan. 11, 2006
Marlin Frederick, Cedar Park, TX (US);
Marlin Frederick, Cedar Park, TX (US);
ARM Limited, Cambridge, GB;
Abstract
The application discloses a semiconductor memory storage device comprising: a data retention portion comprising latches; a peripheral portion comprising read and write logic; and a power switching device wherein said peripheral portion is operable to be powered by a periphery voltage difference; said data retention portion is operable to be powered by a data retention voltage difference said data retention voltage difference being different to said periphery voltage difference; and in response to a write request signal to write to at least one of said latches output from said peripheral portion to said data retention portion by said write logic, said power switching device is operable to reduce a voltage difference across said at least one of said latches such that a data signal output from said peripheral portion and having a voltage level determined by said periphery voltage difference is able to write to said at least one of said latches.