Programmable signal routing systems having low static leakage
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United States of America Patent
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Mar 22, 2011
Grant Date -
Apr 1, 2010
app pub date -
Sep 26, 2008
filing date -
Sep 26, 2008
priority date (Note) -
Reissued
status (Latency Note)
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Abstract
Parasitic static leakage current through input terminals of bus-accessing multiplexers is minimized by automatically forcing as many as practical of the bus lines into a high impedance state where all drivers of the lines are in a high impedance output state. Thus parasitic current sinking or current sourcing leakage paths through the bus-accessing multiplexers are cut off. The method is of particular utility in a low power FPGA that desirable has low static current leakage when in a static state.
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