06456528 is referenced by 690 patents and cites 2 patents.

A flash non-volatile memory system that normally operates its memory cells in multiple storage states is provided with the ability to operate some selected or all of its memory cell blocks in two states instead. The two states are selected to be the furthest separated of the multiple states, thereby providing an increased margin during two state operation. This allows faster programming and a longer operational life of the memory cells being operated in two states when it is more desirable to have these advantages than the increased density of data storage that multi-state operation provides.

Title
Selective operation of a multi-state non-volatile memory system in a binary mode
Application Number
9/956340
Publication Number
6456528 (B1)
Application Date
September 17, 2001
Publication Date
September 24, 2002
Inventor
Jian Chen
San Jose
CA, US
Agent
Skjerven Morrill
US
Assignee
SanDisk Corporation
CA, US
IPC
G11C 16/04
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