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. 07, 2011

Filed:

Jun. 05, 2008
Applicant:

Srinivas Perisetty, Santa Clara, CA (US);

Inventor:

Srinivas Perisetty, Santa Clara, CA (US);

Assignee:

Altera Corporation, San Jose, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Dual port memory elements and memory array circuitry that utilizes elevated and non-elevated power supply voltages for performing reliable reading and writing operations are provided. The memory array circuitry may contain circuitry to switch a power supply line of a column of memory elements in the array to an appropriate power supply voltage during reading and writing operations. Each memory element may contain circuitry to select between power supply voltages during reading and writing operations. During reading operations, an elevated voltage may power cross-coupled inverters that store data in the memory elements while a non-elevated voltage may be used to turn on associated address transistors. During writing operations, the non-elevated voltage may power the cross-coupled inverters while the elevated voltage may be used to turn on the associated address transistors.


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