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. 07, 2021
Filed:
Jun. 23, 2020
Shanghai Huahong Grace Semiconductor Manufacturing Corporation, Shanghai, CN;
Guangjun Yang, Shanghai, CN;
Abstract
A charge pump unit structure of a charge pump circuit includes a booster circuit unit, a positive pump transfer unit and a negative pump transfer unit. An output terminal of the booster circuit unit is connected to an input terminal of the positive pump transfer unit through a first switch circuit and to an input terminal of the negative pump transfer unit through a second switch circuit. An erase enable signal is connected to control terminals of the positive and negative pump transfer units. A first enable signal is connected to control terminals of the positive pump transfer unit and the first switch circuit. A second enable signal is connected to control terminals of the negative pump transfer unit and the second switch circuit.