Adlink cPCI-7248 CompactPCI 48-Channel Digital I/O Card

The ADLINK cPCI-7248 is a 3U CompactPCI digital I/O card delivering 48 channels of parallel input/output for industrial automation, process monitoring, and machine control. It emulates two industry-standard 8255 Programmable Peripheral Interface chips in Mode 0, with each PPI providing three 8-bit ports (A, B, C) or subdivided 4-bit nibble configurations. The card integrates programmable timer/counters - one 16-bit event counter and one 32-bit timer for interrupt generation - along with dual interrupt capability from DIO channels and timer outputs.

A single 100-pin SCSI-type connector supporting Opto-22 external devices simplifies integration into existing industrial systems.

Technical Specifications

• Form Factor: 3U CompactPCI, 32-bit CompactPCI bus


• Digital I/O Channels: 48 channels (two 24-point connectors)


• Input Logic Levels: 2.0 V to 5.25 V (high); 0.0 V to 0.80 V (low)


• Input Current: 20.0 µA (high); -0.2 mA (low)


• Output Logic Levels: ≥2.4 V (high); ≤0.5 V (low)


• Output Current: -15.0 mA (high); 24.0 mA (low)


• Timer/Counter: 16-bit counter; 32-bit timer


• Data Transfer Rate: 500 K bytes/sec maximum


• Power Consumption: 470 mA typical @ 5 V DC; 560 mA maximum @ 5 V DC


• Operating Temperature: 0 °C to 60 °C


• Storage Temperature: -20 °C to 80 °C


• Humidity: 5% to 95% non-condensing

Key Features

• High-density 48-channel parallel I/O in compact 3U form factor


• Industry-standard 8255 PPI emulation enables legacy software compatibility


• Programmable interrupt sources from digital I/O and timer outputs


• 100-pin SCSI connector with Opto-22 header compatibility


• Configurable port nibbles for flexible I/O grouping

Typical Applications Data acquisition systems, industrial process control, machine automation, distributed I/O platforms, and legacy system upgrades requiring parallel digital control.

Compatibility & Integration Fully compatible with PCI-7248 software. PCIS-DASK development kit supported. Operates in CompactPCI systems compliant with PICMG 2.0 Rev 2.1.