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:
Aug. 19, 2025
Filed:
Sep. 11, 2023
Samsung Electronics Co., Ltd., Suwon-si, KR;
Tongsung Kim, Suwon-si, KR;
Junghwan Kwak, Suwon-si, KR;
Seungjun Bae, Suwon-si, KR;
Chiweon Yoon, Suwon-si, KR;
Byungkwan Chun, Suwon-si, KR;
Youngmin Jo, Suwon-si, KR;
Samsung Electronics Co., Ltd., Gyeonggi-Do, KR;
Abstract
A ZQ calibration circuit includes: a ZQ controller configured to detect an end of one interface mode, among a plurality of interface modes in which ZQ calibration is supported, and to instruct a switch to another interface mode in response to the one interface mode coming to an end; a ZQ engine configured to generate a first reference voltage corresponding to the one interface mode through a multi-reference voltage generator, to generate a second reference voltage corresponding to the another interface mode in response to the switch to the another interface mode being instructed, to perform the ZQ calibration based on the first reference voltage or the second reference voltage, and to output a calibration code; and a ZQ driver configured to output an output signal through an input/output pad based on the calibration code.