The MSI-AX10420  provides 48 TTL level input/output lines arranged in two 24-bit digital I/O groups. Each group emulates a 8255 PPI (programmable peripheral interface) operating in mode 0 with a higher output drive capacity than a standard 8255 device. Each group is divided into three 8-bit ports which can be configured to function as an input or an output. Bit 0 of port C can be configured to generate an interrupt on IRQ 5, 9(2), 10, 11, 12 or 15 with triggering on either the rising or falling edge. I/O is provided by two 50-pin connectors that are OPTO-22 compatible. The unit is an 8-bit stackthrough PC/104 with I/O mapped 16-bit addressing for which addresses A3 thru A9 are switch selectable. Includes PC/104 spacers. Requires +5V only.

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Data Sheet (Adobe Acrobat Format)

MSI-AX10420 User Manual (Adobe Acrobat Format)

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