Field-programmable device with buffer between programmable circuit
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United States of America Patent
Stats
-
Nov 8, 1988
Grant Date -
N/A
app pub date -
Dec 23, 1985
filing date -
Dec 23, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A field-programmable device contains a buffer (20) located between a pair of programmable circuits (14 and 16) along a column (10) connecting the circuits. The buffer provides increased current to the column portion connected to one of the circuits (16) without increasing the current supply requirements for the column portion connected to the other circuit (14). This permits the device to switch faster and/or to accommodate programmable circuits of large size. The buffer also enables the same select circuitry to be used in programming both circuits without causing a significant voltage between them during normal operation.
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