I. Model Positioning (Key Point)

MVME167P-25SE: Motorola/Emerson 6U VME single-height PowerPC architecture SBC, part of the MVME167P series (PowerPC version).

25: High-end model code (Dual Gigabit + 512MB ECC + Wide Temperature Enhanced)

SE: Standard Extended (Standard Extended, with PMC + VGA)

Positioning: PowerPC 750FX 800MHz + 512MB ECC + Dual Gigabit + VGA + PMC - High Performance / High Reliability / Wide Temperature VME Motherboard.

II. Core Hardware Parameters (Compared with 24SE, the main differences lie in memory / temperature)

1) Processor (Completely the same as 24SE)

CPU: PowerPC 750FX, 800MHz

L1: 32KB instructions + 32KB data; L2: 512KB cache

32-bit RISC, approximately 1200 MIPS, strong hardware floating-point

2) Memory (Key upgrade for 25SE: 512MB ECC, 24SE is 256MB ECC)

DRAM: 512MB SDRAM ECC (standard, non-expandable)

Flash: 16MB NOR Flash (system / firmware)

Optional storage: 2.5" IDE / CompactFlash (CF)

No battery SRAM (PowerPC architecture)

3) Built-in I/O (Completely the same as 24SE)

Ethernet: 2×10/100/1000Mbps Gigabit (RJ45, DMA)

Serial ports: 2×RS-232 + 1×RS-422/485 (3 ports, 115200bps)

Parallel: 1×IEEE 1284 bidirectional

USB: 1×USB 2.0 Host

PS/2: Keyboard / Mouse

Display: Integrated VGA, up to 1600×1200

VME: A32/D32, master / slave / system controller

Expansion: 1×PMC slot

Timers / Watchdog: Hardware WDT + programmable timer

4) Electrical and Environmental (25SE wide-temperature enhancement: -40℃ to +70℃; 24SE is 0℃ to +60℃)

Power supply: +5V, +3.3V, +12V; typical 22W

Operating temperature: -40℃ to +70℃ (industrial wide-temperature enhancement)

Storage temperature: -55℃ to +85℃

Humidity: 5% to 95%, no condensation

Cooling: Forced air cooling, 100CFM

5) Structure

Size: 6U VME (233.4×160mm), single height

Weight: Approximately 0.85kg

III. 24SE vs 25SE (The most critical difference, must be considered when selecting)

MVME167P-24SE: 256MB ECC, 0 to +60℃ → Standard performance / standard temperature, general scenarios

MVME167P-25SE: 512MB ECC, -40 to +70℃ → High-end memory + wide-temperature enhancement, harsh environments / multi-tasking / large data cache

Others (CPU, I/O, VME, PMC, VGA) are exactly the same and interchangeable (software compatibility).

IV. MVME167P vs Older MVME167 (68040)

MVME167 (such as 33B): 68040 33MHz, 16–64MB, single 10Mbps network, SCSI, 4 serial ports → legacy

MVME167P-25SE: PowerPC 800MHz, 512MB ECC, dual Gigabit, VGA, USB, PMC, wide-temperature → Modern high-performance

The two generations are completely incompatible and cannot be directly replaced.

V. Typical Applications

Industrial automation high-speed control, real-time motion control, machine vision, data acquisition, embedded multi-tasking, low/ high/ strong interference/high reliability, requiring 512MB ECC + dual Gigabit + wide-temperature VME system.