Product Core Brief
- Model: MOTOROLA MVME2305-900
- Brand: Motorola
- Series: MVME2300
- Core Function: VMEbus single-board computer for legacy industrial control.
- Product Type: VME SBC
- Key Specs: 25MHz MC68030 | 4MB SRAM | 10Base-T Ethernet
- Condition: New Surplus
Product Introduction
MOTOROLA MVME2305-900 operates as a reliable VMEbus single-board computer. This industrial automation unit handles legacy control and data processing tasks efficiently.
It leverages a 25MHz Motorola 68030 processor with up to 16MB SRAM expansion. The board provides 10Base-T Ethernet and dual RS-232 ports for legacy networked environments.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Processor | Motorola 68030 |
| Max Clock Speed | 25 MHz |
| Memory | 4MB SRAM (Expandable to 16MB) |
| VME Protocol | Standard VMEbus Interface |
| Ethernet | 10Base-T |
| Serial Ports | 2x RS-232 |
| Parallel Port | 1x Parallel Interface |
| Storage | EPROM / Flash / Optional Floppy |
| Operating Temp | -40°C to +85°C |
| Power Input | +5VDC |
Quality Control Process
We validate every MOTOROLA MVME2305-900 through comprehensive functional testing. First, we perform a cold boot sequence to verify firmware and VxWorks/pSOS BSP integrity. Next, we run multi-pass memory diagnostics on the SRAM to catch bit errors. We validate the 10Base-T Ethernet port under sustained network load. Serial and parallel interfaces undergo loopback signal injection testing. Finally, we verify VMEbus arbitration timing using a protocol analyzer. Each replacement module ships in anti-static packaging.
Replacement Pitfall Guide
❗ SRAM Expansion Limits: The board supports up to 16MB SRAM. Exceeding this limit or using incompatible modules causes boot failures.
❗ 10Base-T Network Speed: This SBC only supports 10Mbps Ethernet. Modern switches may require manual speed/duplex configuration to negotiate correctly.
❗ VMEbus Jumper Settings: Address and arbitration jumpers must match your legacy backplane configuration. Mismatches cause silent bus hangs.
❗ Legacy Serial Cables: Dual RS-232 ports use non-standard pinouts. Verify cable wiring before connecting to modern equipment.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| MOTOROLA | (Same) | Direct Replacement | No config changes needed |
| MOTOROLA | MVME2301-900 | Needs Adaptation | Different CPU/memory config |
| MOTOROLA | MVME2400 Series | Needs Adaptation | PowerPC migration required |
- VME Bus Throughput: Standard VMEbus bandwidth (up to 40MB/s).
- Processor Performance: 25MHz MC68030 with integrated MMU.
