ADLINK PCM-7248+ is a 48-bit parallel digital input/output (DIO) module for PC/104-Plus form factor. The
header connectors are fully compatible with the industry opto-22 standard. The PCM-7248+ emulates mode 0
of industry standard 8255 Programmable Peripheral Interface (PPI) chips. Each PPI offers three 8-bit ports,
Port A, Port B and Port C. The Port C is divided into 2 nibble-wide (4-bit) ports. The total 6 ports can be
configured as input or output independently.
The PCM-7248+ device has programmable timers/counters. One 16-bit counter is available for event counting,
while the other 32-bit timer is available for timed interrupt generation. The PCM-7248+ device provides multiple
programmable interrupt sources from DIO channels, as well as the output of the timer.