(MVME162-031 version without FPU and single network interface, focusing on low power consumption / low cost)

I. Basic Information

Model: MVME162-032

Brand: Motorola (later Emerson)

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

CPU: MC68LC040 (without floating-point FPU)

Status: Out of production (EOL), industrial spare parts circulation

Position: Low-cost, low-power consumption derivative version of 030/031

II. Core Hardware Specifications

1) Processor

CPU: Motorola MC68LC040 (32-bit, no FPU, 8KB Cache, MMU)

Clock Speed: 25 MHz (fixed, lower than 33 MHz of 030/031)

Performance: Approximately 12–15 MIPS (no floating point)

2) Memory (same as 031, higher than 030)

DRAM: 8 MB (parity), maximum 32 MB

SRAM: 512 KB, battery backup (powerful backup)

Flash: 1 MB (firmware / monitoring)

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

3) I/O Interfaces (key differences: single network port, no FPU)

VMEbus: VME64, A32/D32, master / slave, DMA, system controller

Ethernet: 1×10 Mbps (single network port) - 031 has dual network ports

Serial Port: 2×RS-232/422 (Console + configurable)

SCSI: Narrow SCSI-2 (same as 030/031)

IP Slot: 4 IndustryPack slots (same as 030/031)

Parallel Port: 8-bit bidirectional parallel port

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

4) Electrical and Environmental

Power Supply: +5 V @ 4 A (lower than 030/031, low power consumption), +12 V @ 0.2 A

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

Storage Temperature: −40 ℃ ~ +85 ℃

Humidity: 5%–90% RH (no condensation)

Size: 6U VME, 233 × 160 mm

III. Quick Overview of MVME162 (Easy Differentiation) Table

Project MVME162-030 MVME162-031 MVME162-032

CPU 68040 (33MHz, with FPU) 68040 (33MHz, with FPU) 68LC040 (25MHz, without FPU) DRAM 4 MB 8 MB 8 MB

Network port: 1×10 Mbps, 2×10 Mbps (redundant), 1×10 Mbps

Power consumption: Higher, Higher, Lower

Positioning: Basic model, High-end redundant model, Low-cost low-power model

Four. Function features

No floating point, Low power consumption: 68LC040 removes FPU, lower power consumption, suitable for scenarios without floating point operations and energy-saving

Single network port + 8MB memory: Balance cost and performance, twice the memory size of 030

Complete VME control: Same series bus and expansion capabilities, compatible with VME64 system

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

Industrial-grade reliability: Commonly used in old DCS/PLC/SCADA models, stable and durable

Five. Typical applications

Industrial automation: No floating point control, low-cost DCS/PLC

Test measurement: Basic data acquisition, ATE (without complex calculations)

Railway transportation / Military industry: Low power consumption, non-floating point embedded control

Semiconductor equipment: Old equipment main control (no floating point operation required)

Six. Maintenance and replacement

Battery: Replace every 3-5 years to prevent data loss in SRAM/NVRAM

Heat dissipation: Forced air cooling, prone to frequency reduction at high temperatures

Replacement: MVME2700, MVME3100 (PowerPC, PCI, faster)