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:
Feb. 28, 2012
Filed:
Jan. 16, 2008
Daisuke Oda, Tokyo, JP;
Bunsho Kuramori, Tokyo, JP;
Daisuke Oda, Tokyo, JP;
Bunsho Kuramori, Tokyo, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
A nonvolatile memory includes a memory cell array having multiple memory cells, a read-out circuit outputting data stored in the memory cell array asynchronously in response to an input address signal, a selection circuit outputting a selection signal for selecting a location of the memory cell to fail, an error making circuit receiving a test mode signal, making the data outputted from the read-out circuit fail so that the failed data have an error, and outputting the failed data in response to the selection signal when the test mode signal is activated, and outputting the data outputted from the read-out circuit when the test mode signal is not activated, a data latch circuit latching either the failed data or the data outputted from the read-out circuit and outputting the latched data, and an error correcting circuit detecting the error in the latched data, correcting the error, and outputting the corrected signal.