05991517 is referenced by 145 patents and cites 40 patents.

A system of Flash EEprom memory chips with controlling circuits serves as non-volatile memory such as that provided by magnetic disk drives. Improvements include selective multiple sector erase, in which any combinations of Flash sectors may be erased together. Selective sectors among the selected combination may also be de-selected during the erase operation. Another improvement is the ability to remap and replace defective cells with substitute cells. The remapping is performed automatically as soon as a defective cell is detected. When the number of defects in a Flash sector becomes large, the whole sector is remapped. Yet another improvement individually verifies the states of a plurality of cells that are being programmed in parallel in order to terminate the programming, as a result of the verification, on a cell-by-cell basis as the cells reach their programmed states.

Title
Flash EEprom system with cell by cell programming verification
Application Number
337566
Publication Number
5991517
Application Date
December 20, 1996
Publication Date
November 23, 1999
Inventor
Sanjay Mehrotra
Milpitas
CA, US
Robert D Norman
San Jose
CA, US
Eliyahou Harari
Los Gatos
CA, US
Agent
Majestic Parsons Siebert & Hsue
Assignee
SanDisk Corporation
CA, US
IPC
G06F 11/00
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