Adaptive erase and soft programming for memory

Details Adaptive erase and soft programming for memory Adaptive erase and soft programming for memory

2010-10-06

2011-12-20

Nguyen, Viet Q (Department: 2827)

Static information storage and retrieval

Floating gate

Particular biasing

C365S185180, C365S185190, C365S185220, C365S185240, C365S185300, C365S218000

Reexamination Certificate

active

08081519

ABSTRACT:
An erase sequence of a non-volatile storage device includes an erase operation followed by a soft programming operation. The erase operation applies one or more erase pulses to the storage elements, e.g., via a substrate, until an erase verify level is satisfied. The number of erase pulses is tracked and recorded as an indicia of the number of programming-erase cycles which the storage device has experienced. The soft programming operation applies soft programming pulses to the storage elements until a soft programming verify level is satisfied. Based on the number of erase pulses, the soft programming operation time is shortened by skipping verify operations for a specific number of initial soft programming pulses which is a function of the number of erase pulses. Also, a characteristic of the soft programming operation can be optimized, such as starting amplitude, step size or pulse duration.

REFERENCES:
patent: 5270979 (1993-12-01), Harari
patent: 5600595 (1997-02-01), Ogura
patent: 5909390 (1999-06-01), Harari
patent: 6603682 (2003-08-01), Keays
patent: 6639844 (2003-10-01), Liu et al.
patent: 6901010 (2005-05-01), Hamilton et al.
patent: 7200708 (2007-04-01), Kreifels
patent: 7277329 (2007-10-01), Chen et al.
patent: 7310270 (2007-12-01), Tanaka
patent: 7339834 (2008-03-01), Lutze
patent: 7385851 (2008-06-01), Park et al.
patent: 7839690 (2010-11-01), Lee et al.
patent: 8036044 (2011-10-01), Dong et al.
patent: 2002/0126535 (2002-09-01), Roohparvar
patent: 2004/0027901 (2004-02-01), Shiga et al.
patent: 2006/0044919 (2006-03-01), Taoka et al.
patent: 2008/0137409 (2008-06-01), Nakamura et al.
patent: 2008/0158997 (2008-07-01), Hemink
patent: 2008/0165585 (2008-07-01), Surico
patent: 2008/0198660 (2008-08-01), Mokhlesi
patent: 2008/0198662 (2008-08-01), Mokhlesi
patent: 2008/0239822 (2008-10-01), Kosaki
patent: 2008/0266970 (2008-10-01), Lee
patent: 2009/0296475 (2009-12-01), Hemink et al.
patent: 2010/0149881 (2010-06-01), Lee et al.
International Preliminary Report on Patentability dated Jun. 14, 2011, International Application No. PCT/US2009/058002.
International Search Report and Written Opinion of the International Searching Authority dated Dec. 15, 2009 in PCT Application No. PCT/US2009/058002.
Preliminary Amendment dated Sep. 14, 2009, in U.S. Appl. No. 12/332,646, filed Dec. 11, 2008.
Restriction dated Apr. 27, 2010, in U.S. Appl. No. 12/332,646, filed Dec. 11, 2008.
Amendment dated May 14, 2010, in U.S. Appl. No. 12/332,646, filed Dec. 11, 2008.
Notice of Allowance dated Aug. 20, 2010, in U.S. Appl. No. 12/332,646, filed Dec. 11, 2008.
Response to Offical Communication dated Oct. 17, 2011, European Patent Application No. 09792888.1.

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