Data Sheet March 2002 ORCA® Series 3C and 3T Field-Programmable Gate Arrays Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ High-performance, cost-effective, 0.
35 µm (OR3C) and 0.
3 µm (OR3T) 4-level metal technology, (4- or 5-input look-up table delay of 1.
1 ns with -7 speed grade in 0.
3 µm).
Same basic architecture as lower-voltage, advanced process technology Series 3 architectures.
(See ORCA Series 3L FPGA documentation.
) Up to 186,000 usable gates.
Up to 452 user I/Os.
(OR3Txxx I/Os are 5 V tolerant to allow interconnection to both 3.
3 V and 5 V devices, selectable on a per-pin basis.
) Pin selectable I/O clamping diodes provide 5 V or 3.
3 V PCI compliance and 5 V tolerance on OR3Txxx devices.
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