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:
Sep. 15, 2015
Filed:
Jan. 13, 2015
Fujitsu Semiconductor Limited, Yokohama-shi, Kanagawa, JP;
Shinya Fujioka, Kawasaki, JP;
FUJITSU SEMICONDUCTOR LIMITED, Yokohama, JP;
Abstract
When a voltage monitoring circuit detects that a supplied voltage is in a state of being less than a certain voltage at a time of performing writing of data with respect to a memory cell of a memory core having a refresh function, a flag is set in a register circuit, an address at which the writing is performed is held, and the memory core is made to execute rewriting by a refresh operation with respect to the held address, in accordance with the flag set in the register circuit, thereby enabling an increase in speed of operation while securing a retention life of memory data, and enabling a reduction in power consumption without lowering a processing capability even if the supplied voltage is lowered.