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:
May. 27, 1997
Filed:
Jun. 02, 1995
Applicant:
Inventors:
Giovanni Campardo, Bergamo, IT;
Giuseppe Crisenza, Trezzo Sull'Adda, IT;
Marco Dallabora, Melegnano, IT;
Assignee:
SGS-Thomson Microelectronics S.r.l., Agrate Brianza, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518502 ; 36518513 ; 36518526 ; 36518533 ;
Abstract
A method for writing cells in a memory which reduces errors caused by depleted memory array cells being turned on even when not selected. In the method, nonselected bit lines and nonselected word lines are biased so that the threshold voltage of the nonselected cells increases. In particular, the nonselected bit lines are left floating and the nonselected word lines are set to a zero voltage. Appropriate potentials are applied to the selected word line, selected bit line, and selected source line in order to program the selected cell.