Page buffer for flash memory device

Details Page buffer for flash memory device Page buffer for flash memory device

2006-08-29

2006-08-29

Zarabian, Amir (Department: 2827)

Static information storage and retrieval

Read/write circuit

Precharge

C365S185170, C365S185220, C365S189050

Reexamination Certificate

active

07099213

ABSTRACT:
The disclosed is a page buffer of a flash memory device. In accordance with the present invention, a latch is controlled through a program verification signal, a latch signal, and latch data in a page buffer during a program verification. As a result, there are many advantages. First, in the event that the program verification is performed after programming once more, a passed cell is not sensed again and maintains its value. Second, it is possible to prevent a problem caused by a sensing operation as well as a verification error due to an external factor. As a result, program operation errors can be prevented.

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patent: 6768682 (2004-07-01), Yano et al.
patent: 6813187 (2004-11-01), Lee
patent: 6826082 (2004-11-01), Hwang et al.
patent: 6937510 (2005-08-01), Hosono et al.

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