Emerson / Motorola VME162PA-242SE Embedded Controller

The Emerson/Motorola VME162PA-242SE is a high-performance 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.