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. 27, 2002
Filed:
Sep. 17, 2001
Shozo Tomita, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
An interface circuit providing serial access to a non-volatile memory in an integrated circuit has at least two memory-access scan registers and at least one selection scan register coupled in common to a data input terminal of the integrated circuit. These registers are also coupled through a multiplexer to a data output terminal of the integrated circuit. The memory-access scan registers receive serial data such as address data and data to be written in the non-volatile memory at the specified addresses. The selection scan register receives a code for selecting the memory-access scan registers. Serial access to the non-volatile memory is speeded up because the memory-access scan registers can be accessed individually.