Features

80 MHz Maximum Source Frequency (125 MHz with Prescalers)
3 Simultaneous High-Speed DMA Transfer Capability
32 Digital I/O Lines (5 V TTL/CMOS) - 8 Dedicated, 24 Shared with Counter/Timers
Digital Debouncing Filters
The National Instruments PCI-6602 is a timing and digital I/O module for PCI and PXI.

It offers up to four 32-Bit counter/timers and 32 lines of TTL/CMOS-compatible digital I/O.

A wide variety of counter/timer tasks can be performed with the NI PCI-6602, including encoder position measurement,

event counting, period measurement, pulse width measurement, pulse generation, pulse train generation, and frequency measurement.

DATASHEET