72 TTL digital I/O lines
Emulates mode 0 of 8255 PPI
Buffered circuits for higher driving capacity than 8255

Main Features

72 TTL digital I/O lines Emulates mode 0 of 8255 PPI Buffered circuits for higher driving capacity than 8255 Multiple-source interrupt handling Interrupt output pin for simultaneously triggering external devices with the interrupt Output status read-back “Pattern match” and “Change of state” interrupt functions for critical I/O monitoring Keeps I/O setting and digital output values when hot system reset Supports dry contact and wet contact The MIC-3753 is a 72-channel digital I/O card for the PCI bus. The card emulates mode 0 of the 8255 PPI chip, but the buffered circuits offer a higher driving capability than the 8255. The 96 I/O lines are divided into twelve 8-bit I/O ports: A0, B0, C0, A1, B1, C1, A2, B2, C2, A3, B3 and C3. Users can configure each port as input or output via software