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.

Date of Patent:
Mar. 09, 2021

Filed:

Dec. 30, 2019
Applicant:

SK Hynix Inc., Icheon-si, KR;

Inventors:

Seung Hun Lee, Icheon-si, KR;

Hyeong Soo Jeong, Icheon-si, KR;

Assignee:

SK hynix Inc., Icheon-si, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); G11C 7/22 (2006.01); G11C 29/52 (2006.01); G11C 19/00 (2006.01); H03K 19/20 (2006.01);
U.S. Cl.
CPC ...
G11C 7/222 (2013.01); G11C 29/52 (2013.01); G11C 19/00 (2013.01); H03K 19/20 (2013.01);
Abstract

A semiconductor apparatus includes a command decoding circuit and an enable signal generation circuit. The command decoding circuit generates a plurality of operation codes and a strobe pulse based on a command signal and a clock signal. The enable signal generation circuit generates a seed signal based on at least a part of an operation code, among the plurality of operation codes, and the strobe pulse, and generates an enable signal by shifting the seed signal. The enable signal generation circuit generates a plurality of guard keys, after the seed signal is generated, based on the plurality of operation codes and the strobe pulse, and prevents the generation of the enable signal when any one of the plurality of guard keys is disabled.


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