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. 19, 2006
Filed:
May. 20, 2004
Yoshinao Morikawa, Ikoma, JP;
Masaru Nawaki, Nara, JP;
Hiroshi Iwata, Nara, JP;
Akihide Shibata, Nara, JP;
Yoshinao Morikawa, Ikoma, JP;
Masaru Nawaki, Nara, JP;
Hiroshi Iwata, Nara, JP;
Akihide Shibata, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A semiconductor storage device is provided, which comprises a memory array comprising memory elements. Each memory element comprises a gate electrode, a channel region, first and second diffusion regions, and first and second memory function sections provided an opposite aides of the gate electrode and having a function of retaining charges. The device further comprises a row decoder for selecting a word line in accordance with a row address, and a write control circuit for applying a write pulse to a bit line, which is connected to one of the first and second diffusion regions of the memory element connected to the selected word line, in accordance with a column address. The write control circuit controls the application of the write pulse so that a quantity of charges retained in one of the first and second memory function sections corresponds to a value of multibit data.