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:
Aug. 16, 2016

Filed:

Jan. 22, 2015
Applicant:

Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;

Inventors:

Kuoyuan (Peter) Hsu, San Jose, CA (US);

Bing Wang, Palo Alto, CA (US);

Derek C. Tao, Fremont, CA (US);

Yukit Tang, San Jose, CA (US);

Kai Fan, Los Altos, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/22 (2006.01); G11C 11/419 (2006.01); G11C 7/12 (2006.01);
U.S. Cl.
CPC ...
G11C 7/222 (2013.01); G11C 7/12 (2013.01); G11C 7/227 (2013.01); G11C 11/419 (2013.01);
Abstract

A circuit includes a write driver, a data circuit, a memory cell, a tracking write buffer, a tracking write driver, and a tracking cell. The circuit is configured that, during a write operation of the memory cell based on a clock signal, the write driver circuit is configured to generate a write control signal to control the memory cell; the data circuit is configured to provide write data to the memory cell; the tracking write buffer is configured to generate a tracking write control signal; and the tracking write driver is configured to generate a tracking write data signal to be transferred to the tracking cell. The tracking cell is configured to adjust a signal at a first node of the tracking cell based on a logical value of the tracking write data signal in response to the tracking write control signal.


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