Overview

PCI-8554 is a 10-CH 16-bit timer/counter and digital I/O cards. It provides ten independent

timer/counters and one cascaded 32-bit timer. The clock source for each timer/counter can be software

selected from the cascaded 32-bit timer, external clock source, timer/counter output of the last channel, and

the on-board 8MHz clock. The flexible architecture makes it easy to re-configure the hardware; for

example, up to ten timer/counters can be cascaded to form a 160-bit timer/counter. The hardware can also

generate interrupts from either the external interrupt sources or the output of the cascaded 32-bit timer.

The programmable de-bounce filters provide eleven channels of glitch-filtered external clock inputs for

timer/counters and the external interrupt input. This feature further improves the reliability for counting

applications.

The PCI-8554 also provides 8-CH TTL digital inputs and 8-CH TTL digital outputs. PCI-8554

delivers cost-effective and reliable solutions for event counting, frequency measurement, baud-rate

generation, watchdog timer, and other industrial applications.