Flash memory

Details Flash memory Flash memory

1992-12-28

1994-07-05

LaRoche, Eugene R.

Static information storage and retrieval

Read/write circuit

Erase

365900, 365185, G11C 700

Patent

active

053273842

ABSTRACT:
A flash memory of the present invention has a comparator for inspecting whether or not data is erased from each memory cell. If data written in each of all the memory cells has been erased completely, erasing operation to the memory cell block is prohibitted.

REFERENCES:
patent: 4931997 (1990-06-01), Mitsuishi et al.
patent: 5095461 (1992-03-01), Miyakawa et al.
patent: 5214605 (1993-05-01), Lim et al.

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