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:
Nov. 11, 1997
Filed:
May. 31, 1995
Applicant:
Inventor:
Hiroyuki Hashimoto, Itami, JP;
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Mitsubishi Electric Semiconductor Software Co., Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
3951831 ; 395733 ;
Abstract
A microcomputer comprising an exclusive register 61, an STP/WIT instruction valid/invalid control circuit 60 which detects that data are written consecutively in the register 61 and that values of the data are in a predetermined combination, and AND gates 11 and 12 which permit execution of the STP instruction and the WIT instruction for stopping clock .phi. only when the predetermined signal is outputted from the STP/WIT instruction valid/invalid control circuit 60, and capable of avoiding the instruction for stopping the internal clock being executed by mistake.