I. Basic Information

Model: MVME162-033

Brand: Motorola / Emerson

Form: 6U VME64 single-board computer (SBC)

CPU: MC68040 @ 33 MHz (with FPU, MMU, 8KB Cache)

Status: EOL， extremely rare spare parts

Core Features： Dual network ports + 33MHz with FPU + 8MB DRAM + full-function VME

II. Core Hardware (Similar to 031, but with a more complete bus/extension)

1) Processor

MC68040, 33 MHz (Same as 031, higher than 032's 25 MHz)

With FPU (floating point), MMU, 8KB unified cache

Performance: Approximately 18–20 MIPS, supports floating point operations

2) Memory (Same as 031)

DRAM: 8 MB (parity), maximum 32 MB

SRAM: 512 KB, battery backup (power off retention)

Flash: 1 MB (firmware / monitoring)

NVRAM/RTC: 8 KB + real-time clock, battery backup

3) I/O Interfaces (Dual network ports, same as 031)

VMEbus: VME64 A32/D32, master / slave, DMA, system controller (033 VME driver is more complete and has better compatibility)

Ethernet: 2×10 Mbps (dual network ports, redundant / isolated)

Serial Port: 2×RS-232 (Console + configurable)

SCSI: Narrow SCSI-2

IP Slot: 4×IndustryPack (IP) expansion slots

Parallel Port: 8-bit bidirectional

LED: 8 status lights (FAIL, RUN, LAN1, LAN2, SCSI, VME, etc.)

4) Electrical / Environmental

Power Supply: +5 V @ 5 A; ±12 V auxiliary

Operating Temperature: 0 ℃ ~ +70 ℃ (forced air cooling)

Storage Temperature: −40 ℃ ~ +85 ℃

Size: 6U VME (233 × 160 mm)

III. Comparison of Four MVME162 Models (Easy to distinguish at a glance) Table

Model CPU / Frequency FPU DRAM Network Port Power Consumption Position

030 68040 / 33MHz ✅ 4MB 1×10M Medium Basic model

031 68040 / 33MHz ✅ 8MB 2×10M Medium High-end redundant configuration

032 68LC040 / 25MHz ❌ 8MB 1×10M Low Low cost / Low power consumption

033 68040 / 33MHz ✅ 8MB 2×10M Medium-High 031 fully equipped / enhanced version, VME more stable

Key Differences: 033 = "Original Factory Full Test, Full Compatibility, Long-term Stability" version of 031, used earlier in military / high-end DCS, much less in quantity than 031.

Four. Functional Features

Complete 68040 performance: 33MHz + FPU, supports floating-point control / complex algorithms

Dual network redundancy: dual 10M Ethernet, suitable for high reliability, hot standby systems

Full VME control capability: system controller, DMA, multi-level interrupts, best bus compatibility

Full power-off protection: SRAM/NVRAM/RTC battery backup, data security

Industrial-grade durability: commonly used in military / high-end DCS, resistant to vibration, wide temperature range

Five. Typical Applications

High-end DCS/PLC (requires floating-point + redundant network)

Military / Aviation embedded control (high reliability)

Main control for semiconductor / precision equipment (floating-point operation)

Upgrade replacement for old VME systems (high stability alternative of 031)

Six. Alternatives and Purchasing

Direct replacement: MVME162-031 (functionally the same, market volume large, lower price)

Upgrade replacement: MVME2700, MVME3100 (PowerPC, PCI, Gigabit network)

Note on spare parts: 033 is extremely rare, the price is usually 30% - 80% higher than 031.