Description
Motorola MVME147SA-2
Technical Specifications
The MVME147SA-2 is powered by a 33.33 MHz MC68030 enhanced 32-bit microprocessor, featuring on-chip instruction and data caches that boost processing efficiency by up to 40%. It is paired with a 33.33 MHz MC68882 floating-point coprocessor for complex mathematical computations. The board supports 4, 8, 16, or 32MB of shared DRAM with programmable parity checking. It also includes 4K x 8 SRAM and a real-time clock/calendar with battery backup, along with four 28/32-pin ROM/PROM/EPROM sockets supporting a 16-bit width.
Functional Features
This single-board computer features a comprehensive A32/D32 VMEbus master/slave interface with system controller functionality. It provides four EIA-232-D serial communication ports and a Centronics-compatible parallel printer port. For storage and networking, it includes a SCSI bus interface with DMA capabilities and an Ethernet transceiver interface. The board also incorporates two 16-bit tick timers, a watchdog timer, and a 4-level requester, 7-level interrupter, and 7-level interrupt handler for the VME bus.
Application Scenarios
The MVME147SA-2 is widely deployed in critical infrastructure and high-reliability environments. Its primary applications include automated production line control, power grid measurement and control systems, CNC machinery, aerospace telemetry, radar systems, and high-energy physics experiments. It serves as the central computing core in systems requiring robust real-time data processing and fault-tolerant operations.
Performance Parameters
The module operates on a +5V DC power supply with a typical power consumption of 15W. It delivers a Mean Time Between Failures (MTBF) exceeding 100,000 hours, ensuring long-term operational stability. The board supports A32/D32 and A24/D16 VMEbus addressing modes, providing flexible data throughput capabilities for complex system architectures.
Material Composition
The MVME147SA-2 is constructed using premium industrial-grade electronic components. The multi-layer printed circuit board (PCB) is engineered with high-conductivity copper and advanced signal integrity designs. Critical high-power-density integrated circuits are rigorously tested and selected to withstand extreme industrial conditions, ensuring superior resistance to electromagnetic interference and mechanical stress.
Structural Characteristics
The board adheres to the standard 6U VME mechanical form factor, measuring 233.35 mm in height and 160.02 mm in depth. It weighs approximately 0.9 kg. The front panel is equipped with status indicator LEDs (SCON, DUAL, FAIL, STATUS) and hardware reset/abort switches. The rear utilizes a dual-high P1 and P2 VME connector interface to mate securely with the chassis backplane.
Operating Principle
The MC68030 microprocessor executes system instructions and manages memory through its integrated Memory Management Unit (MMU). It coordinates with the MC68882 coprocessor to handle floating-point arithmetic efficiently. Peripheral data transfers, such as SCSI storage access and Ethernet communication, are managed by dedicated on-board controllers utilizing Direct Memory Access (DMA) to minimize CPU overhead and maximize real-time system responsiveness.
