Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design
Reexamination Certificate
2006-06-28
2009-08-04
Whitmore, Stacy A (Department: 2825)
Computer-aided design and analysis of circuits and semiconductor
Nanotechnology related integrated circuit design
C326S037000
Reexamination Certificate
active
07571413
ABSTRACT:
A programmable integrated circuit has multiple power supply voltages. Power supply voltages are distributed using power supply distribution lines. The integrated circuit has programmable power supply voltage selection switches. Each power supply voltage selection switch has its inputs connected to the power supply distribution lines and supplies a selected power supply voltage to a circuit block at its output. Test circuits are provided for testing the power supply voltage selection switches. During testing, the power supply voltage selection switches are adjusted to produce various power supply voltages at their outputs. The test circuit associated with each switch performs voltage comparisons to determine whether the switch is functioning properly. Each test circuit produces a test result based on its voltage comparison. The test results from the test circuits are provided to a scan chain, which unloads the test results from the integrated circuit to a tester for analysis.
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Dastidar Jayabrata Ghosh
Lee Andy L.
Perisetty Srinivas
Altera Corporation
Kellogg David C.
Treyz G. Victor
Treyz Law Group
Whitmore Stacy A
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