Retention margin program verification

Details Retention margin program verification Retention margin program verification

2006-12-28

2009-11-10

Pham, Ly D (Department: 2827)

Static information storage and retrieval

Floating gate

Particular biasing

C365S185030, C365S185240

Reexamination Certificate

active

07616499

ABSTRACT:
Data verification in a memory device using a portion of a data retention margin is provided. A bit count is read from the region to determine whether errors will result in the memory. A read in one or more retention margin portions is performed after the normal program verify sequence and if the number of bits in these regions is more than a pre-set the memory will fail verify status. A method of verifying data in a memory device includes the steps of: defining an retention margin between adjacent data thresholds; programming the memory device with data; determining whether bits are present in the data retention margin; and if the number of bits in the retention margin exceeds a threshold, generating an error.

REFERENCES:
patent: 6285597 (2001-09-01), Kawahara et al.
patent: 7304893 (2007-12-01), Hemink et al.
patent: 2003/0217323 (2003-11-01), Guterman et al.
patent: 2005/0024939 (2005-02-01), Chen et al.
patent: 2005/0219896 (2005-10-01), Chen et al.
patent: 2006/0221714 (2006-10-01), Li et al.
patent: 2006/0227602 (2006-10-01), Honma et al.
patent: 2007/0030732 (2007-02-01), Micheloni et al.
Office Action mailed Feb. 26, 2008, U.S. Appl. No. 11/617,546, filed Dec. 28, 2006.
U.S. Appl. No. 11/617,546, filed Dec. 28, 2006.
Amendment dated Jul. 28, 2008, U.S. Appl. No. 11/617,546, filed Dec. 28, 2006.
International Search Report and the Written Opinion of the International Searching Authority, mailed Jun. 11, 2008, PCT Appln. No. PCT/US2007/088831, filed Dec. 26, 2007.
Response to Office Action filed Jan. 26, 2009, U.S. Appl. No. 11/617,546, filed Dec. 28, 2006.
Final Office Action dated Nov. 24, 2008, U.S. Appl. No. 11/617,546, filed Dec. 28, 2006.
Office Action dated May 13, 2009 in U.S. Appl. No. 11/617,546.
Response to Office Action filed Jun. 22, 2009 in U.S. Appl. No. 11/617,546.

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