Virtual ground MOS EPROM or ROM matrix
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United States of America Patent
Stats
-
Jul 28, 1981
Grant Date -
N/A
app pub date -
Oct 29, 1979
filing date -
Oct 29, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An array of rows and columns of memory cells of the virtual ground type employs a cell layout which has one column line per column instead of requiring extra lines for ground. Half of the column lines are used as outputs and half as ground. One output line and one ground line are selected by improved decode circuitry. The cell array is of a continuous web type wherein metal-to-silicon contacts are shared by four adjacent cells.
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