MOTOROLA MVME712/M

• Compliance: Meets FCC Class A emission standards when installed in a properly grounded, conductive enclosure with shielded cables and secured mounting hardware

Key Features

• Four 25-Pin Serial Ports:
  • Supports EIA-232-D standard
  • Configurable via onboard jumpers as DTE (Data Terminal Equipment) or DCE (Data Communications Equipment)
  • Ideal for connecting modems, terminals, PLCs, and industrial instruments
• Front-Panel I/O Connectors:
  • Four DB-25 connectors for serial communication
  • One DB-25 connector for parallel printer interface
  • One 50-pin high-density SCSI connector (Centronics-style) for storage and peripheral connectivity
  • One 10/100 Mbps Ethernet port (RJ-45) for network communication
• Internal Modem Interface:
  • Routes EIA-232 signals from Serial Port 2 to an internal modem connector for dial-up or remote communication applications
• SCSI Interface:
  • Supports connection to internal and external SCSI devices
  • Includes socketed SCSI termination resistors for flexible configuration (end-of-chain or middle-of-chain)
  • Termination power (TERMPWR) provided and fused at 1 A on the P2 adapter board
• P2 Adapter Board Required:
  • Essential for signal routing between the VME backplane’s P2 connector and the MVME712/M module
  • Provides breakout for SCSI, serial, printer, and Ethernet signals
  • Enables proper power distribution and termination
• Status Indicators:
  • Green LED: Indicates presence of termination power (TERMPWR)
  • Yellow LED: Indicates transceiver power status
• EMI/RFI Protection:
  • Front panel includes shielding for electromagnetic interference (EMI) and radio frequency interference (RFI) suppression
  • Electrostatic discharge (ESD) protection on all I/O lines
• Modular Design:
  • Facilitates easy maintenance and replacement
  • Supports integration into high-availability and ruggedized systems

Application Areas

• Industrial automation and control systems requiring multiple serial and parallel interfaces
• Embedded computing platforms in manufacturing, process control, and machine monitoring
• Legacy system upgrades where VME-based architectures are maintained
• Data acquisition and telemetry systems utilizing serial communication (RS-232) and SCSI storage
• Test and measurement equipment needing reliable, multi-port I/O connectivity
• Military and aerospace ground support equipment using VMEbus standards
• Communication gateways and protocol converters in distributed control networks

Manufacturer and Support

The MVME712/M was developed by Motorola’s Embedded Communications division, which later became part of Force Computers, then GE Intelligent Platforms, and subsequently transitioned through several ownerships including Emerson and Abaco Systems. As a legacy product, it is no longer in active production but remains supported in existing systems through specialized industrial suppliers and component distributors. Technical documentation, including user manuals and schematics, is available through archived resources and embedded systems component vendors. Due to its robust design and compatibility with long-deployed VME systems, the MVME712/M continues to be used in mission-critical applications where reliability and interface flexibility are paramount.