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:
Dec. 17, 2013
Filed:
Dec. 22, 2011
Masataka Kazuno, Kofu, JP;
Masataka Kazuno, Kofu, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A non-volatile memory device is provided, which includes a first block for storing a first data group including a test data, a second block for storing a second data group including a complementary data to the first data group, a differential sense amplifier for generating an output value based on a difference between two input signals, a diagnostic circuit for performing a failure diagnosis using a value from the differential sense amplifier, and a control circuit which performs control such that a signal based on the test data and the complementary data is set to the input signal of the differential sense amplifier and the diagnostic circuit executes a failure diagnosis of the differential sense amplifier. The non-volatile memory device performs a failure diagnosis with high reliability capable of distinguishing between a failure of sense amplifier and a failure of a memory cell.