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.

Date of Patent:
Feb. 06, 2018

Filed:

Apr. 29, 2016
Applicant:

Lapis Semiconductor Co., Ltd., Yokohama, JP;

Inventors:

Akira Akahori, Yokohama, JP;

Katsuaki Matsui, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 5/14 (2006.01); G11C 17/12 (2006.01); G11C 17/18 (2006.01);
U.S. Cl.
CPC ...
G11C 17/123 (2013.01); G11C 5/145 (2013.01); G11C 17/18 (2013.01);
Abstract

A write voltage generation circuit includes: a power supply terminal that receives an external power supply voltage; a boosting circuit that boosts the external power supply voltage to generate a boosted voltage; and a selector that selects either one of the external power supply voltage and the boosted voltage, and outputs the selected voltage as the write voltage. The selector selects the external power supply voltage as the write voltage in a first part of a write period for writing data to a memory cell, and selects the boosted voltage as the write voltage in a latter part of the write period.


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