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:
Nov. 13, 2001
Filed:
Mar. 27, 2000
Naoki Kanazawa, Tokyo, JP;
Kawasaki Steel Corporation, Kobe, JP;
Abstract
A detection circuit detects the timings of transitions of two node signals. The detection circuit has two nodes A and B, a P-channel transistor and an N-channel transistor provided between a power supply and a ground so as to be connected in series in the order of the power supply, the P-channel transistor, and the N-channel transistor, and each of the gates thereof is connected to each of the two nodes A and B, and a floating-preventing latch circuit connected to a connection node formed by the P-channel transistor and the N-channel transistor. Particularly, in the detection circuit, the gate of the P-channel transistor is connected to the node A and the gate of the N-channel transistor is connected to the node B in which the two node signals A and B are initially LOW, the node signal A rises to HIGH first, then the node signal B rises to HIGH, the node signals A and B remain HIGH for a predetermined period, the node signal B falls to LOW first, and then the node signal A falls to LOW. Also, a detection circuit for detecting the timing of charge and discharge completion of the bit line for use in a semiconductor memory according to the present invention is provided.