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. 27, 2004
Filed:
Dec. 08, 1999
Applicant:
Inventors:
Mamoru Sakugawa, Tokyo, JP;
Hiroyuki Kondo, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/200 ;
U.S. Cl.
CPC ...
G06F 1/200 ;
Abstract
A microcomputer comprises a CPU, a built-in memory and a memory controller. The memory controller performs access control to the built-in memory in response to a memory access request from the CPU. The microcomputer further comprises a wait count register for storing a waiting period relating to memory access. The memory controller reads the waiting period upon receipt of the memory access request, and then, performs the access control to the built-in memory after a lapse of the waiting period. Low power consumption is achieved by utilizing the access control to the built-in memory without controlling a power source and an oscillator.