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:
Sep. 10, 1996
Filed:
May. 03, 1995
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor memory comprising a flip-flop circuit, a redundant memory cell row and column, a specific address detecting gate, a transistor, a sense amplifier and a data output buffer. The receipt of a supply potential causes the flip-flop circuit to generate previously stored output status representing the use or the nonuse of the redundant memory cell row and column. Upon detection of a specific address by the specific address detecting gate, the transistor effects a switching operation causing the output status generated by the flip-flop circuit to be output to the outside via the transistor, sense amplifier and data output buffer. This allows the use or the nonuse of the redundant bits to be verified efficiently.