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:
Jun. 23, 2015

Filed:

Oct. 24, 2011
Applicants:

Jonathan Tsung-yung Chang, Hsinchu, TW;

Chiting Cheng, Taichung, TW;

Chien-kuo Su, Luzhu Township, TW;

Chung-cheng Chou, Hsin-Chu, TW;

Jack Liu, Taipei, TW;

Inventors:

Jonathan Tsung-Yung Chang, Hsinchu, TW;

Chiting Cheng, Taichung, TW;

Chien-Kuo Su, Luzhu Township, TW;

Chung-Cheng Chou, Hsin-Chu, TW;

Jack Liu, Taipei, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01); G11C 8/08 (2006.01); G11C 11/418 (2006.01);
U.S. Cl.
CPC ...
G11C 8/08 (2013.01); G11C 11/418 (2013.01);
Abstract

A memory access operation on a bit cell of a digital memory, e.g., a static random access memory (SRAM), is assisted by reducing the word line control voltage for reading and boosting it for writing, thus improving data integrity. The bit cell has cross coupled inverters for storing and retrieving a logic state via bit line connections through a passing gate transistor controlled by the word line. A level of a word line signal controlling the passing gate transistor is shifted from a first voltage value to a higher second voltage value to begin a memory access cycle. The level of the word line signal is shifted from the second voltage value to a third voltage value less than the second voltage value during the access cycle. The word line signal is maintained at the third voltage value for a time interval during the access cycle.


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