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:
Feb. 16, 2016
Filed:
Nov. 10, 2014
Winbond Electronics Corp., Taichung, TW;
Kenichi Arakawa, Chiba, JP;
WINBOND ELECTRONICS CORP., Taichung, TW;
Abstract
The invention provides a current detection circuit and a semiconductor memory apparatus using the current detection circuit thereof. The current detection circuit is capable of rapidly sensing the current flowing through a tiny bit line structure. A page buffer/sensing circuit of the invention includes: a transistor TPpre-charging a node SNS during a pre-charge period and providing a target constant current to the node SNS during a discharge period; a transistor TNpre-charging the bit line according to the voltage pre-charged to the node SNS; and a transistor TPconnected to the node SNS. The transistor TPdetects whether or not a current larger than the constant current supplied by the transistor TPis discharged from the bit line and outputs a detection result to a node SENSE.