Em104P-1394 (ARBOR)

The PIA-3148 is a 48-bit digital I/O module. The module can be used together with TTL level input /output circuitry. Its 48 bits are arranged in two 24-bit digital I/O groups. Each group emulates an 8255 PPI (programmable peripheral interface) mode 0, but has a higher driving capacity than the 8255 PPI. Each 24-bit group is divided into three 8-bit ports. 48 digital I/O lines (2 groups) Group emulates a 8225 PPI mode 0. Buffered circuits for higher driving capacity than 8255. Bit 0 of port C can generate an interrupt to IRQ 2, 3, 4, 5, 6 or 7. Interrupt trigger on rising / falling edge. Output status readback. Pin-compatible with OPTO-22 I/O module racks.