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. 23, 2019
Filed:
May. 01, 2018
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventors:
Hee Jun Kim, Gyeonggi-do, KR;
Minsoon Hwang, Gyeonggi-do, KR;
Assignee:
SK hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/4093 (2006.01); G11C 11/4096 (2006.01); G11C 11/4099 (2006.01); G11C 11/4074 (2006.01); G11C 29/50 (2006.01);
U.S. Cl.
CPC ...
G11C 11/4096 (2013.01); G11C 11/4074 (2013.01); G11C 11/4093 (2013.01); G11C 11/4099 (2013.01); G11C 29/50008 (2013.01);
Abstract
A memory system includes: a buffer memory device; and a memory controller including a data output driver configured to output data to the buffer memory device, wherein the data output driver includes: a pull-up switching unit coupled to an input/output power voltage, the pull-up switching unit including a PMOS transistor controlled by a data signal that varies according to the output data; a pull-up resistor unit including an NMOS transistor coupled to a DQ pad; a pull-down switching unit controlled by the data signal; and a pull-down resistor unit coupled to the pull-down switching unit.