Emerson / Motorola MVME162PA-252SE Embedded Controller

The Emerson/Motorola MVME162PA-252SE is a double-high VME embedded controller engineered for demanding industrial real-time control, data acquisition, and communication tasks. Built on a solid VMEbus architecture, it delivers master/slave functionality with flexible address and data bus configurations. The board accommodates either an MC68LC040 microprocessor or an MC68040 with integrated floating-point coprocessor, both operating at 25 MHz. Configurable memory options range from 1 MB to 32 MB of DRAM with parity or ECC protection, supplemented by 512 KB of battery-backed SRAM and 8K x 8 NVRAM. The controller integrates two serial ports (user-configurable for EIA-232-D, EIA-530, or EIA-422 protocols), two to four IndustryPack® expansion ports with DMA support, and optional SCSI and Ethernet interfaces.

Technical Specifications

Microprocessor: MC68LC040 or MC68040 (with FPU) at 25 MHz

DRAM: 1 MB, 4 MB, 8 MB, 16 MB, or 32 MB (configurable, parity or ECC protected)

SRAM: 512 KB with battery backup

Flash Memory: 1 MB (on-board firmware/monitor)

NVRAM: 8K x 8 with battery backup

Time-of-Day Clock: Battery-backed

Timers: Six tick timers, one watchdog timer, four 16-bit timers

VMEbus Interface: A16/A24/A32 addressing; D8/D16/D32 data widths; A32/D64 burst DMA capability

Serial Ports: Two EIA-232-D DTE ports with user-configurable second port (EIA-530 or EIA-422 optional)

IndustryPack® Ports: Two 16-bit or one 32-bit (alternately, four 16- or 32-bit) with dedicated DMA

Optional Interfaces: SCSI bus with DMA; Ethernet LAN transceiver with DMA

EPROM Sockets: Two 32-pin JEDEC DIP or one 32-pin PLCC

Form Factor: Double-high VME module; 233.4 mm H × 160.0 mm D × 19.8 mm W

Key Features

Master/slave VMEbus system controller function

Battery-backed real-time clock and SRAM for retention

DMA for VMEbus and local memory burst cycles

Onboard debugger and diagnostic firmware

Remote reset, abort, and status control

Memory configuration switches for application-specific sizing

Typical Applications Real-time industrial control systems, embedded data acquisition platforms, VMEbus system management, communication gateways, and harsh-environment process monitoring.

Compatibility & Integration Full VMEbus compliance (A16/A24/A32, D8/D16/D32). IndustryPack® module support. Optional SCSI and Ethernet expansion for networked or storage-intensive deployments.