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:
Mar. 01, 2022
Filed:
Sep. 15, 2020
Shanghai Huahong Grace Semiconductor Manufacturing Corporation, Shanghai, CN;
Mingyong Huang, Shanghai, CN;
Jun Xiao, Shanghai, CN;
Abstract
The application relates to a data reading circuit of an embedded flash memory cell. The data reading circuit a switch circuit, a current clamp circuit, a current mirror circuit, a reference current source, a precharge circuit and a comparison circuit; the switch circuit includes a transmission gate, one end of the transmission gate is connected with a drain of the embedded flash memory cell, and the other end of the transmission gate is connected with a detection end of the current clamp circuit; a response end of the current clamp circuit is connected with a data node; the current mirror circuit is connected with the reference current source and the data node; an output end of the precharge circuit is connected with the data node; one input end of the comparison circuit is connected with the data node, and the other input end is connected with reference voltage.