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:
Jan. 16, 2018
Filed:
Aug. 25, 2016
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/00 (2006.01); G11C 5/00 (2006.01); G11C 7/10 (2006.01); G11C 11/4074 (2006.01); G06F 3/06 (2006.01); H03K 19/0175 (2006.01); H03K 19/018 (2006.01); H03K 19/0185 (2006.01); G11C 5/04 (2006.01);
U.S. Cl.
CPC ...
H03K 19/0005 (2013.01); G06F 3/0625 (2013.01); G06F 3/0659 (2013.01); G06F 3/0683 (2013.01); G11C 5/04 (2013.01); G11C 7/1057 (2013.01); G11C 7/1084 (2013.01); G11C 11/4074 (2013.01); H03K 19/01825 (2013.01); H03K 19/017545 (2013.01); H03K 19/018557 (2013.01);
Abstract
A memory interface circuit includes a first variable impedance circuit coupled between a first supply voltage and a pad, and a second variable impedance circuit coupled between a second supply voltage and the pad; wherein when the first supply voltage changes, at least one of the first variable impedance circuit and the second variable impedance circuit is controlled to have different setting in response to the changing of the first supply voltage.