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:
Mar. 16, 1999
Filed:
Feb. 25, 1997
Applicant:
Inventors:
Shohei Maeda, Tokyo, JP;
Nobusuke Abe, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395652 ;
Abstract
A microcomputer having a program storing unit (16) separately from a CPU. The program storing unit (16) receives from a host computer (7) a boot program used for loading data into a flash memory (11), and stores the boot program into a RAM (2), when a mode decision circuit (15) makes a decision that a chip mode is an RSIF mode. This solves a problem of a conventional microcomputer in that it must reserve a boot program area in the flash memory in advance to prestore the boot program in the boot program area, and hence the entire area of the flash memory cannot be released as a user program area.