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. 29, 1991
Filed:
Jul. 15, 1988
Akinori Matsuo, Higashiyamato, JP;
Masashi Watanabe, Kokubunji, JP;
Michio Fujimoto, Akishima, JP;
Masashi Wada, Fuchuu, JP;
Yoshiharu Nagayama, Fuchuu, JP;
Kazuo Naito, Fuchuu, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi VLSI Engineering Corp., Tokyo, JP;
Abstract
A memory area within a semiconductor integrated circuit device is accessible through an address changeover circuit. External control signals instruct the memory device as to the addressing mode desired. Address signals originating externally are provided directly to the IC's address decoder circuits, while addresses originating internal to the IC are first shifted one or two bits to modify the address by a power of 2, then provided to the address decoder circuits. In this way, data of bit length N may be written to a memory array of bit length M, where M>N.