Product Core Brief
- Model: VME172PA644SE
- Brand: Motorola
- Series: MVME172 / VMEbus
- Core Function: Provides reliable 32-bit embedded control and real-time processing for legacy VMEbus systems.
- Product Type: VME Single Board Computer (SBC)
- Key Specs: 66 MHz MC68060 | 1 MB RAM | 20 MB IDE HDD
- Condition: New Original (New Surplus) ⚠️ EOL — limited stock remaining
Product Introduction
MOTOROLA serves as a foundational 32-bit VMEbus single board computer for legacy industrial and aerospace applications. This unit is driven by a Motorola 68k series processor (MC68060 or MC68040) and includes 1 MB of RAM.
Unlike modern SBCs, this module integrates a 20 MB IDE hard drive and dual RS-232 serial ports directly on the board. It supports VxWorks and pSOS real-time operating systems. Verify with OEM datasheet for exact processor bin and memory configurations.
VME172PA644SE
Key Technical Specifications
| Parameter | Value |
|---|---|
| Processor | MC68060 / MC68040 |
| Clock Speed | 50 MHz – 66 MHz |
| System RAM | 1 MB |
| Storage | 20 MB IDE HDD |
| Serial Ports | 2x RS-232 |
| Bus Interface | VMEbus |
| Expansion | 16-bit DMA, Ethernet, SCSI |
| Operating Temp | 0 °C to 55 °C |
| Form Factor | 6U VMEbus |
| Architecture | 32-bit Motorola 68k |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: We trace source serial numbers against factory records. Visual inspection checks for pin corrosion or PCB scratches.
- Live Functional Test: Power-on self-check runs first. We verify comms handshake and run continuous load tests >24 hrs with temp logging.
- Electrical Parameter Test: Insulation resistance gets tested at 500 V Megger (>10 MΩ required). Ground continuity is mandatory.
- Firmware Verification: Read and record firmware version immediately. Photograph DIP switch and jumper settings before racking.
- Final QC & Packaging: Seal in anti-static bag. Apply QC Passed label with test date and engineer initials.
Replacement Pitfall Guide
❗ Firmware Mismatch: New module firmware may conflict with older VME system controllers. Always check 172Bug monitor and BSP compatibility.
❗ DIP Switch / Jumper Misconfiguration: Factory defaults rarely match field settings. Verify VMEbus system controller selection and memory base address switches.
❗ Terminal / Cable Incompatibility: Pin definitions change between revisions. Check P2 connector wiring carefully if using legacy serial or SCSI peripherals.
❗ Power Supply Mismatch: Calculate total rack power draw. Maintain 20% headroom on your 5 V / 12 V VME supply to prevent brownouts during boot.
❗ ESD Damage: Use anti-static mat and wrist strap. Dry environments increase failure risk during handling.
Keep these in mind and you’ll cut 90% of rework time.
VME172PA644SE
Compatibility Matrix & Benchmarks
- → MVME172PA-652SE : Needs Adaptation — Verify memory and HDD differences
- → MVME172-263 : Needs Adaptation — Check processor bin and clock speed
- → MVME2432 : Incompatible — Different architecture (68060 vs PowerPC 750)
Benchmarks:
- Scan cycle: 10 ms (simulated real-time load, 500 I/O points)
- Comms throughput: 10 Mbps (10Base-T Ethernet via expansion)
