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:
Nov. 04, 2008
Filed:
Jun. 16, 2006
Satoru Uematsu, Minehara Shiojiri, JP;
Satoru Uematsu, Minehara Shiojiri, JP;
Seiko Epson Corporation, , JP;
Abstract
A semiconductor integrated circuit having an internal SRAM that includes a plurality of arrayed memory cells, including a first bit line and a second bit line that are connected to first ports and a third bit line and a fourth bit line that are connected to second ports of the memory cells, a first and second transistor respectively compose first ports of adjacent first and second memory cells and having shared impurity diffusion region connected to the first bit line via a first interconnection, a third transistor composing a second port of the first memory cell and having an impurity diffusion region connected to the third bit line via a second interconnection a fourth and fifth transistor respectively composing the first ports of the first and second memory ceils and having a shared impurity diffusion region connected to the second bit line via a third interconnection.