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:
Nov. 13, 2012
Filed:
Jan. 06, 2011
Jeffrey C. Cunningham, Austin, TX (US);
Thomas D. Cook, Austin, TX (US);
Stephen F. Mcginty, Austin, TX (US);
Ronald J. Syzdek, Austin, TX (US);
Jeffrey C. Cunningham, Austin, TX (US);
Thomas D. Cook, Austin, TX (US);
Stephen F. McGinty, Austin, TX (US);
Ronald J. Syzdek, Austin, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A method and memory are provided for determining a read reference level for a plurality of non-volatile memory cells. The method includes: performing a program operation of the plurality of non-volatile memory cells; determining a program level of a least programmed memory cell of the plurality of memory cells; performing an erase operation of the plurality of non-volatile memory cells; determining an erase level of a least erased memory cell of the plurality of memory cells; determining an operating window between the program level and the erase level; and setting the read reference level to be a predetermined offset from the erase level if the operating window is determined to compare favorably to a predetermined value. The memory includes registers for storing the program level and the erase level.