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:
Aug. 14, 1990
Filed:
Nov. 04, 1988
Kazuhiro Takeuchi, Tokyo, JP;
Shigetatsu Katori, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A microcomputer comprises a microprocessor chip and a memory chip coupled to each other. The memory chip includes a memory for storing various processing data, a bus interface for designating an address information of the memory to be accessed for a data transfer, and an address latch for temporarily holding the address information from the bus interface and so as to supply the address information to the memory. Furthermore, there is provided an automatically updated data pointer whose initial value is set with the address information supplied from the bus interface. In case of individually designating an address for each item of data to be transferred, the address latch is used to supply the address information to the memory so that an address is given to the address latch by the bus interface for each data transfer of one unitary data. In the case of continuously designating an address for each item of data to be transferred, so that the data pointer is used to supply the address information to the memory so that an address for the data transfer of a first unitary data to be transferred is given to the data pointer and then the data pointer is automatically updated for each of the second and succeeding data transfers.