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. 02, 1996
Filed:
Jul. 12, 1993
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395280 ; 395842 ; 395848 ; 3642382 ; 3642383 ; 364240 ; 3642423 ; 36424231 ; 364D / ;
Abstract
A data processor includes an interrupt control unit (102); a direct memory access control unit (103); a selection unit (104) for selecting a connection of ready and error signals from a serial communication control unit and external interrupt and DMA request signals with interrupt inputs to the interrupt and the DMA control units; and a selection setting unit (105) for setting a selection mode of the selection unit, thereby making possible to not only switch between a process by interrupt and a process by DMA transfer by programming according to the application but also make efficient use of the hardware resources in the data processor.