Apparatus for providing block erasing in a flash EPROM
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 12, 1991
Grant Date -
N/A
app pub date -
Sep 15, 1989
filing date -
Sep 15, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flash EPROM memory array having vertical blocking is described. The array is organized into a plurality of vertical (column) blocks. Each block includes a source region switch which couples all the source regions in the memory cells in its respective block to a programming potential, ground or a disturb inhibit potential. Each of the blocks may be erased without disturbing the programming in the other blocks.
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