Emerson / Motorola VME162PA-242SE Embedded Controller

The Emerson/Motorola VME162PA-242SE is a VMEbus embedded controller built on the MC68040 microprocessor with integrated floating-point coprocessor running at 25 MHz. Designed for real-time control, data acquisition, and industrial automation, this board delivers reliable processing and expansion through VMEbus architecture while supporting A16/A24/A32 addressing and D8/D16/D32 data transfers.

Technical Specifications Processor & Memory

MC68040 microprocessor with floating-point coprocessor at 25 MHz

16 MB SDRAM with ECC

512 KB SRAM with 200-day battery backup

1 MB Flash memory

PROM socket with four 32-pin JEDEC sockets for EPROM/Flash expansion VMEbus Interface

VMEchip2 ASIC controller supporting A16/A24/A32 address and D8/D16/D32 data widths

Processor-to-VMEbus transfers: D8, D16, D32

DMA transfers: D16, D32, D16/BLT, D32/BLT, D64/MBLT

Functions as VMEbus system controller Serial & Network Connectivity

Two serial ports configurable as EIA-232-D and EIA-232-D/EIA-530 at 38.4 Kbps maximum

Optional Ethernet transceiver interface with DMA

Optional SCSI bus interface with 32-bit local bus burst DMA Expansion & I/O

Two IndustryPack (IP) ports supporting up to four single-size or two double-size modules

Six tick timers with watchdog timer functionality

32-bit local bus burst DMA architecture

Key Features

VMEbus system controller with full A16/A24/A32 address space support

Hardware floating-point coprocessor for computation-intensive tasks

Battery-backed SRAM extends data retention to 200 days minimum

Flexible memory configuration with ECC-protected SDRAM and Flash expansion

Dual-port architecture for independent local and VMEbus operations

Typical Applications Industrial control systems, real-time data acquisition, process automation, distributed I/O management, embedded instrumentation, and VMEbus-based test systems requiring deterministic processing and multi-protocol connectivity.

Compatibility & Integration Full VMEbus compliance with support for IndustryPack modules enables integration into modular industrial computing architectures. Serial and optional Ethernet interfaces provide legacy and modern network connectivity. DMA acceleration across VMEbus and local memory improves throughput for I/O-intensive operations.