Description

Product Overview: MOTOROLA MVME162PA-344SE Embedded Computer Board

The MOTOROLA MVME162PA-344SE is a high-performance, ruggedized embedded computer board designed for the VMEbus (Versa Module Eurocard) architecture. As part of Motorola’s renowned MVME162 series, this model is engineered for critical applications demanding high reliability, robust I/O capabilities, and real-time processing power in harsh environments. It serves as a intelligent controller or a single-board computer (SBC) in complex industrial and military systems.

This specific variant, distinguished by its -344SE suffix, is a critical component for systems requiring a powerful 68K-series CPU and extensive onboard connectivity.

Key Features & Benefits

High-Performance MC68040 Processor:

At its core, the board features a Motorola MC68040 microprocessor, a 32-bit CISC CPU with integrated math co-processor (FPU) and memory management unit (MMU). This delivers substantial processing power for complex control algorithms and real-time tasks.

VMEbus System Interface:

Complies with the VME64 standard, providing a high-bandwidth (40 MB/s), 32-bit parallel bus architecture for interfacing with other VME boards for I/O expansion, data acquisition, and communication.

Comprehensive Onboard Memory:

Typically includes 4 MB or 8 MB of DRAM soldered onto the board, ensuring reliability and resistance to vibration.
Features 512 KB of SRAM with optional battery backup (using a BR-2032 battery), providing non-volatile storage for critical data, boot code, or real-time operating system kernels.

Extensive & Ruggedized I/O Connectivity:

Dual-Channel SCSI: Integrates a NCR 53C710 controller for high-speed (Fast SCSI) communication with storage devices and peripherals.
Two Serial Channels: RS-232/422/485 compatible ports for connecting terminals, modems, or other serial devices.
24 Parallel I/O Lines: Provide flexible interfacing for custom digital control and sensing applications.
Three Counter/Timers: Essential for timing, event counting, and waveform generation in process control.

Mezzanine Site (P2 Connector):

Features a site for a PCI Mezzanine Card (PMC) or Motorola’s proprietary IP Module, allowing for significant functional expansion such as additional Ethernet ports, fiber optic communication, or specialized digital I/O.

Designed for Harsh Environments:

Constructed with industrial-grade components and designed for reliable operation in environments with extended temperature ranges, shock, and vibration.
MVME162PA-344SE

Technical Specifications

Parameter	Specification
Microprocessor	Motorola MC68040, 25 MHz or 33 MHz
FPU/MMU	Integrated
DRAM	4 MB or 8 MB (onboard, soldered)
SRAM	512 KB (battery-backable)
VMEbus Interface	VME64 System Controller (Master)
SCSI Controller	NCR 53C710, Dual-Channel Fast SCSI
Serial I/O	2x RS-232/422/485 ports (MC68681 DUART)
Parallel I/O	24 lines
Counter/Timers	3x (AM9513A)
Expansion	PMC or IP Module Mezzanine Site
Form Factor	6U VME (233mm x 160mm)

Typical Applications

The MVME162PA-344SE was designed for embedded applications where longevity and reliability are paramount. Typical use cases include:

Industrial Automation & Process Control: Acting as a powerful PLC or machine controller.
Military & Aerospace Systems: Ruggedized computing for vehicle management, radar, and communications.
Telecommunications: Base station control and network switching.
Transportation Systems: Railway and traffic control systems.
Medical Imaging: Controlling diagnostic equipment.

Legacy Status & Important Notes

End-of-Life Product: The MOTOROLA MVME162 series, including this model, is a legacy product that has been officially discontinued for many years. It is typically sourced from the secondary market or remaining stock.
Historical Context: This board was a flagship product in the 1990s and early 2000s for VME systems. Motorola’s semiconductor and embedded computing divisions later became Freescale Semiconductor, which was subsequently acquired by NXP Semiconductors.
Considerations for Use: Potential users must consider the availability of replacement boards, compatible software (e.g., VxWorks, LynxOS, pSOS), and technical support, which is now largely community-driven or provided by specialized refurbishment companies.

Why Consider This Board?

For maintaining existing legacy systems, the MVME162PA-344SE remains a critical component. Its robust design, proven architecture, and extensive I/O made it a workhorse of its era. For new designs, modern Single Board Computers (SBCs) with advanced architectures (e.g., ARM, x86) are strongly recommended.

Disclaimer: This description is based on historical technical data sheets. Specifications should be verified against the official MOTOROLA documentation for the specific hardware revision. This product is not recommended for new design-ins due to its obsolete status.

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