Method for refreshing a flash memory

Details Method for refreshing a flash memory Method for refreshing a flash memory

2006-06-08

2009-06-23

Dinh, Son (Department: 2824)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S189070

Reexamination Certificate

active

07551503

ABSTRACT:
A plurality of cells of a flash memory are tested to determine if they need to be refreshed. The cells are read and a plurality of different sensing ratios are used to determine if any of the cells need to be refreshed. Any cells that are determined to need refreshing are refreshed. The cells are read using only a single constant gate voltage.

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Jitu J. Makwana et al. “A Nonvolatile Memory Overview,” Copyright © 2004, printout from web site: http://aplawrence.com/Makwana
onvolmem.html, printout date: Jun. 6, 2006, 21 pages.

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