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. 06, 2018

Filed:

Mar. 05, 2015
Applicant:

Micron Technology, Inc., Boise, ID (US);

Inventors:

Qiang Tang, Cupertino, CA (US);

Xiaojiang Guo, San Jose, CA (US);

Chang Wan Ha, San Ramon, CA (US);

Assignee:

Micron Technology, Inc., Boise, ID (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); H04L 25/02 (2006.01); G06F 13/40 (2006.01); G11C 5/04 (2006.01); G11C 29/02 (2006.01); G11C 29/50 (2006.01);
U.S. Cl.
CPC ...
H04L 25/0278 (2013.01); G06F 13/4086 (2013.01); G11C 5/04 (2013.01); G11C 29/025 (2013.01); G11C 29/028 (2013.01); G11C 29/50008 (2013.01);
Abstract

Methods of operating integrated circuit devices are useful in testing impedance adjustment. Methods include connecting a node of the integrated circuit device to a first voltage node through a reference resistance and connecting the node to a second voltage node through a termination device, and comparing a voltage level at the node to a reference voltage for at least one resistance value of the termination device. When no available resistance value of the termination device generates a voltage level at the node that is deemed to match the reference voltage, the voltage level of the reference voltage may be altered, and the voltage level at the node may be compared to the altered reference voltage. When the voltage level at the node is deemed to match the altered reference voltage, the termination device may be deemed as passed. Otherwise, the termination device may be deemed as failed.


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