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:
Oct. 08, 2024
Filed:
Jun. 10, 2022
Changxin Memory Technologies, Inc., Hefei, CN;
Chan Chen, Hefei, CN;
Anping Qiu, Hefei, CN;
CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei, CN;
Abstract
Embodiments provide a ring oscillator and test method. The ring oscillator includes a first logic gate, a second logic gate, and a switch circuit. The first logic gate is configured to receive a test signal. The second logic gate includes a first NAND gate and a first NOR gate connected in sequence. An output terminal of the second logic gate is connected to an input terminal of the first logic gate, and the second logic gate is configured to receive output of the first logic gate to form a loop. The switch circuit includes a first switch circuit and a second switch circuit. The first switch circuit may be configured to control on/off of a power supply terminal of the first NAND gate and a ground terminal of the first NOR gate. The second switch circuit is configured to control on/off of a ground terminal of the first NAND gate.