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. 09, 2014
Filed:
Apr. 17, 2013
Panasonic Corporation, Osaka, JP;
Naoki Kuroda, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In a static random access memory (SRAM) device having a hierarchical bit line architecture, a local sense amplifier (SA) circuit includes P-channel transistors which precharge local bit lines connected to memory cells, P-channel transistors each having a gate connected to a corresponding one of the local bit lines and a drain connected to a corresponding one of global bit lines, and N-channel transistors each having a gate connected to a corresponding one of the global bit lines and a drain connected to a corresponding one of the local bit lines. As a result, restore operation to a non-selected memory cell during write operation can be achieved without the need of a fine timing control, the speed of read operation by a feedback function can be increased, and the area can be reduced.