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:
Apr. 06, 2010
Filed:
Nov. 24, 2006
Eu Gene Glen Foo, Singapore, SG;
Eu Gene Glen Foo, Singapore, SG;
Systems on Silicon Manufacturing Co. Pte. Ltd., Singapore, SG;
Abstract
A method and system for determining a predicted flash endurance Vt of a flash cell after N program/erase cycles. The method includes measuring a Vtp value and a Vte value of the flash cell after a cycle number in a range from 2000 to less than N/2 program/erase cycles; calculating a Vtp slope of a line starting from the measured Vtp value in a half logarithmic graph representation based on historical test data from flash cells of wafers having substantially the same process steps compared to the flash cell under investigation; calculating a Vte slope of a line starting from the measured Vte value in a half logarithmic graph representation based on the historical test data; and determining the Vtp and Vte values at 2 million program/erase cycles by extrapolating from the measured Vte and Vtp values.