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:
Dec. 31, 2024
Filed:
Nov. 30, 2022
Montage Technology Co., Ltd., Shanghai, CN;
Xiong Zhang, Shanghai, CN;
Chunlai Sun, Shanghai, CN;
MONTAGE TECHNOLOGY CO., LTD., Shanghai, CN;
Abstract
An electrostatic discharge and electrical overstress detection circuit includes protection circuit, sensing circuit, clamp circuit, several stages of sampling logic circuits connected in sequence and storage circuit. Protection circuit is coupled between input/output pin and internal chip and discharges to a power supply terminal when the electrostatic discharge or electrical overstress events happen. Sensing circuit and clamp circuit are coupled between power supply terminal and ground terminal. Each stage of sampling logic circuit is coupled to power supply terminal and memory cell of storage circuit, and the first stage of sampling logic is coupled to the clamp circuit, and when the electrostatic discharge or electrical overstress events happen, the several stages of sampling logic circuits sample voltage of the power supply terminal one by one and change state of corresponding memory cell, so that the electrostatic discharge or electrical overstress events are successively recorded by the memory cell.