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:
Apr. 14, 2025
Filed:
Aug. 02, 2023
Changxin Memory Technologies, Inc., Hefei, CN;
Kai Tian, Hefei, CN;
CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei, CN;
Abstract
The present disclosure provides a memory device and a ZQ calibration method. The memory device includes: two calibration resistor interfaces connected to a same ZQ calibration resistor; a first master chip, a plurality of first slave chips cascaded together, a second master chip, and a plurality of second slave chips cascaded together that are all connected to the ZQ calibration resistor, where first transmission terminals and second transmission terminals are configured to transmit a ZQ flag signal; and an identification module configured to identify a priority calibration chip and a delay calibration chip, and identify the slave chip cascaded with the priority calibration chip as a primary slave chip and the slave chip cascaded with the delay calibration chip as a secondary slave chip.