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.
PC/104-Plus specifications Rev. 1.2 compliant
48-CH TTL/DTL digital inputs/outputs
Emulates 2 industry standard 8255 PPI (mode 0)
Buffered circuits for higher driving capacity
Direct interface with OPTO-22 compatible I/O modules
Known power-up states
Output port status read back
1-CH 32-bit timer for timed interrupt generation
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