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:
Oct. 30, 1990
Filed:
Jul. 28, 1988
Hiroshi Kuwabara, Tokyo, JP;
Shooji Kitazawa, Tokyo, JP;
OKI Electric Industry Co., Ltd, Tokyo, JP;
Abstract
Am EPROM system comprising a memory cell array formed of a matrix of non-volatile semiconductor memory cells, each having a control gate and a floating gate, and storing electric charges on the floating gate, and a word line drive circuit driving respective word lines connected to the control gates of the respective memory cells. The word line drive circuit comprises a delay circuit for delaying a first selection signal, a boosting capacitor having a first electrode connected to the first selection signal and a second electrode connected the output of the delay circuit, and MOS transistors each having a gate electrode connected the second electrode of the boosting capacitor, a first electrode connected to receive a second selection signal and a second electrode connected to a word line.