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:
Feb. 19, 2013
Filed:
Mar. 31, 2009
Shayan Zhang, Austin, TX (US);
James D. Burnett, Austin, TX (US);
Kent P. Fancher, Austin, TX (US);
Andrew C. Russell, Austin, TX (US);
Michael D. Snyder, Cedar Park, TX (US);
Shayan Zhang, Austin, TX (US);
James D. Burnett, Austin, TX (US);
Kent P. Fancher, Austin, TX (US);
Andrew C. Russell, Austin, TX (US);
Michael D. Snyder, Cedar Park, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A memory system has a first memory having an array of memory cells that includes a redundant column. The redundant column substitutes for a first column in the array. The first column includes a test memory cell. The array receives a power supply voltage. The test memory cell becomes non-functional at a higher power supply voltage than the memory cells of the array. A memory controller is coupled to the first memory and is for determining if the test memory cell is functional at a first value for the power supply voltage. This is useful in making decisions concerning the value of the power supply voltage applied to the array.