Emerson / Motorola MVME162-223 Embedded Controller

The Emerson/Motorola MVME162-223 is a double-high VME embedded controller built around the Motorola MC68040 microprocessor operating at 25 MHz. It integrates an on-board Floating-Point Unit (FPU) and Memory Management Unit (MMU) for demanding real-time control, data acquisition, and communication tasks in industrial environments. The module delivers master/slave VMEbus functionality with system controller capability and local bus-to-VMEbus DMA support.

Technical Specifications Processor & Core

MC68040 microprocessor at 25 MHz with integrated FPU and MMU

MC68LC040 variant available (without FPU) Memory

4 MB parity-protected DRAM (ECC variants available)

128 KB SRAM (512 KB SRAM with battery backup on select models)

8K × 8 NVRAM with battery backup and Time-of-Day clock

1 MB Flash memory for monitor/debugger or user firmware (2 MB on some variants)

One 1 Mbit 32-pin PLCC EPROM socket; models 2xx/3xx support four 32-pin JEDEC sockets Interfaces

VMEchip2 ASIC providing A32/D64 VMEbus master/slave with A16/A24/A32 and D8/D16/D32 support

Four serial communication ports (EIA-232-D DTE; EIA-232-D/EIA-422 V.36 variants available) at up to 38.4 Kbps via RJ-45 connectors

Optional 10 Mbps Ethernet (AUI or 10Base-T) via DB-15 connector with DMA

Optional SCSI via 68-pin connector with NCR53C710 support and 32-bit local bus burst DMA

Two IndustryPack ports with dedicated DMA per port; 50-pin connectors Timers & Control

Six tick timers with integrated watchdog timer

Remote Reset/Abort/Status control functions Physical

Double-high VME module: 233 mm (H) × 160 mm (D) × 19.8 mm (W)

Front panel height: 261.8 mm

Key Features

VMEbus system controller functionality with local bus DMA capability

Battery-backed SRAM and NVRAM for non-volatile storage of critical data and logs

Flexible memory expansion via EPROM/Flash sockets

Multiple serial and optional high-speed network/storage interfaces

Watchdog timer for system reliability in deployments

Typical Applications Real-time industrial control, embedded data acquisition, VME-based system monitoring, telecommunications equipment, and defense applications requiring 68040-class processing with extensive I/O and memory options.

Compatibility & Integration Compliant with VME64 standards. Accepts multiple interface modules via IndustryPack expansion. Serial and optional Ethernet/SCSI interfaces enable integration with legacy and modern industrial networks.