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. 13, 2015
Filed:
Jul. 04, 2012
Tsugio Matsuyama, Tokyo, JP;
Kohei Wakahara, Tokyo, JP;
Masaki Fujigaya, Tokyo, JP;
Takahiro Irita, Tokyo, JP;
Tsugio Matsuyama, Tokyo, JP;
Kohei Wakahara, Tokyo, JP;
Masaki Fujigaya, Tokyo, JP;
Takahiro Irita, Tokyo, JP;
Renesas Mobile Corporation, Tokyo, JP;
Abstract
A semiconductor deviceincludes a clock generation circuitthat changes a frequency of an output clock signal according to a control signal div, an arithmetic circuit (e.g., CPU) that operates according to the clock signal, a storage circuit (e.g., IC) that is activated according to access from the arithmetic circuit CPU, a memory access detection unitthat detects a number of accesses from the arithmetic circuit CPUto the storage circuit IC, and when the number of accesses increases, outputs a request signal (e.g., psreq), and a clock control circuitthat generates the control signal div for lowering the frequency of the clock signal according to the request signal psreq