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. 13, 2001
Filed:
Dec. 15, 1999
Applicant:
Inventors:
Hirofumi Mukai, Kodaira, JP;
Kiyoshi Matsubara, Higashimurayama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/200 ;
U.S. Cl.
CPC ...
G06F 1/200 ;
Abstract
A microcomputer is capable of having a CPU calculate a suitable bit rate with respect to a host computer, and of setting accordingly an appropriate erasure time forestalling excess erasure of an internally furnished flash memory, regardless of the operating frequency of the microcomputer. The erasure time is set according to a number of clock signal cycles calculated by the CPU, based upon a measured number of cycles taken during a predetermined period of receiving serial data from the host computer.