MVME162P-252SE | Basic Information (Motorola / Emerson / Abaco)

I. Basic Details

Model: MVME162P-252SE (MVME162PA-252SE)

Brand: Motorola / Emerson / Abaco Systems

Series: MVME162P (6U VME Single Board Computer)

Form: 6U VME Dual High SBC

Positioning: 25 MHz 68040 (with floating point), 16MB, single Ethernet, 2× Serial Ports, 2× IP, SCSI, wide temperature range, ruggedized (S=Enhanced)

II. Core Hardware (252SE Key Feature: Hardware Floating Point FPU)

CPU: MC68040, 25 MHz (with FPU hardware floating point)

32-bit, 8KB L1 cache, MMU, hardware floating point arithmetic unit ✅

DRAM: 16MB (ECC / parity check)

SRAM: 512KB (battery backup, power-on retention)

Flash: 1MB (162Bug firmware)

RTC/NVRAM: 8K×8, battery-backed clock

III. Built-in I/O (252 Family Standard Feature: 2 IP + Single Network + SCSI)

✅ Single 10Mbps Ethernet (DMA)

✅ 2× Serial Ports (EIA-232-D, console + user)

✅ 2× IndustryPack (IP) expansion slots (each channel independent DMA)

✅ SCSI-2 interface (NCR 53C710, with DMA)

✅ 6× 32-bit Timers + Watchdog

IV. Power Consumption and Environment (E = wide temperature range, S = ruggedized / strengthened)

Power Supply: +5V, typical 2.2A

Operating Temperature: -40°C ~ +85°C (industrial wide temperature range)

Ruggedness Features (S):

Enhanced welding, anti-vibration / shock (vehicle / ship / industrial strong shock environment)

High-level screening of components, improvement of resistance to humidity / salt fog

Size: 6U VME (233.4 × 160 mm)

Weight: Approximately 0.85 kg 

V. 252 Family Side-by-Side Comparison (252 / 252E / 252SE)

252: MC68040 (with FPU), 16MB, 0~+70°C Commercial Temperature, 2IP, Single Network, SCSI, Standard Type

252E: MC68040 (with FPU), 16MB, -40~+85°C Wide Temperature, 2IP, Single Network, SCSI, Wide Temperature Type

252SE: MC68040 (with FPU), 16MB, -40~+85°C Wide Temperature + Reinforced, 2IP, Single Network, SCSI, Reinforced Top Configuration ✅

One-sentence note: 252 = Commercial, 252E = Wide Temperature, 252SE = Wide Temperature + Reinforced + With Floating Point.

VI. 252SE vs 244LSE (Most Common Comparison)

252SE: With FPU (Floating Point), 2×IP, Single Ethernet, SCSI, Reinforced, Wide Temperature

244LSE: Without FPU (LC040), 4×IP, Dual Ethernet, SCSI, Reinforced, Wide Temperature

→ Choose 252SE: For Floating Point Operations; Choose 244LSE: For 4IP + Dual Network Redundancy

VII. Typical Applications (Exclusive Scenarios for 252SE)

Requires hardware floating-point operation (motion control, algorithms, simulation)

Vehicle-mounted, ship-mounted, rail transit, industrial strong seismic environment (reinforced requirement)

Wide Temperature (-40~+85°C) + 2 IP Expansion + SCSI Local Storage

Single Network is sufficient, but requires high reliability and long-term unmanned systems

VIII. Compatibility Replacement

Same series interchangeable: 252SE / 252E / 252 / 250 Series

Upward compatible: MVME162‑530/743/853/863