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. 04, 2001
Filed:
Jan. 10, 2000
Applicant:
Inventors:
Joseph G. Pawletko, Germantown, MD (US);
K. Michael Han, San Jose, CA (US);
Narbeh Derhacobian, Belmont, CA (US);
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 7/00 ;
Abstract
A voltage control circuit that narrows the distribution of threshold voltages of memory cells by using nonlinearly incremented programming voltages. To do so, the voltage control circuit applies to the memory cells a first program pulse of a first voltage, a second program pulse of a second voltage to the memory cell, and a third program pulse of a third voltage, where the difference between the third voltage and the second voltage is less than the difference between the second voltage and the first voltage.