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.
Patent No.:
Date of Patent:
Dec. 08, 2009
Filed:
Feb. 19, 2007
Prashant U. Kenkare, Austin, TX (US);
Ravindraraj Ramaraju, Round Rock, TX (US);
Troy L. Cooper, Austin, TX (US);
Prashant U. Kenkare, Austin, TX (US);
Ravindraraj Ramaraju, Round Rock, TX (US);
Troy L. Cooper, Austin, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A multiple port memory has a word line driver that provides a word line signal to access a first write port of a multiple port memory cell in an array of multiple port memory cells during a write operation. A first logic circuit has a first input for receiving a first port selection signal, a second input for receiving a disable signal, and an output. A buffer circuit has an input coupled to the output of the first logic circuit, and an output for providing the word line signal. The disable signal is asserted to prevent the word line driver from accessing the first write port when a second write port of the multiple port memory cell is accessed during the write operation and the second write port has a higher priority than the first write port.