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. 03, 2026

Filed:

May. 11, 2023
Applicant:

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

Inventors:

Yumito Aoyagi, Hsinchu, TW;

Yuichiro Ishii, Kanazawa-Ku, JP;

Makoto Yabuuchi, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01); G11C 11/418 (2006.01); G11C 11/419 (2006.01);
U.S. Cl.
CPC ...
G11C 11/418 (2013.01); G11C 11/419 (2013.01);
Abstract

A memory macro includes a tracking wordline driver that drivers a wordline with a suppressed voltage. The suppressed voltage is made lower than the voltage used to drive wordlines in the memory array by an amount that a tracking wordline is driven with a suppressed voltage, which is a voltage that is held below the drain supply voltage. Suppressing the voltage on the tracking wordline causes tracking memory cell with average cell characteristic to emulate the slowest memory cells in a memory array. The tracking wordline with the suppressed voltage may be subjected to a mimicked wordline load. The tracking wordline with the suppressed voltage and the mimicked wordline load may also be used to enable a mimicked write drive used in write tracking. The tracking wordline with the suppressed voltage may also be used as input to a write delay circuit that times write operations.


Find Patent Forward Citations

Aoyagi, Yumito. (2026). Tracking worst case memory cells by suppressing tracking wordline voltage (U.S. Patent No. 12567460). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12567460

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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