Description
Motorola MVME257A
Technical Specifications
- Processor: PowerPC 603e RISC microprocessor.
- Clock Speed: 200 MHz.
- Memory: 32MB or 64MB ECC/Non-ECC DRAM.
- Storage: 2MB Flash memory.
Functional Features
- Low Power Design: Optimized for minimal power consumption and heat generation.
- VMEbus Interface: Full master and slave functionality with A32/A24/A16 addressing.
- Integrated I/O: 10/100Base-T Ethernet, dual RS-232 serial, and SCSI-2.
- System Monitoring: Watchdog timer, RTC, and NVRAM.
Application Scenarios
Widely used in telecommunications, industrial control, data acquisition, and aerospace test equipment.
Performance Parameters
- Bus Throughput: Up to 40 MB/s VMEbus transfer rate.
- Network: 10/100 Mbps adaptive Ethernet with full-duplex support.
- Serial: Up to 115.2 Kbps baud rate.
Material Composition
UL94V-0 flame-retardant multi-layer industrial PCB with high-reliability BGA processors and anti-vibration solder joints.
Structural Characteristics
Standard single-slot 6U VME dimensions. Front panel includes RJ45, DB9 serial, status LEDs, and reset button.
Working Principle
The PowerPC 603e boots from Flash, initializes hardware, and loads the RTOS. It communicates with local peripherals via PCI and with the VME backplane via a PCI-to-VME bridge.
Installation Requirements
Insert into a standard 6U VME chassis backplane. Ensure P1 and P2 connectors are fully seated and locked. Provide stable +5V and ±12V DC power.
Usage Precautions
Never hot-swap the module. Always wear an ESD wrist strap. Avoid operation in high-EMI environments without proper shielding.
