I. Product Positioning

MVME167‑034B is a 6U VME single-height SBC from Motorola/Emerson. It is the B revision of MVME167‑034A (an industrial-strength, top-of-the-line version).

Core: 33 MHz MC68040 + 32MB ECC / parity DRAM + the strongest anti-interference / ESD / high-temperature stability.

It is fully compatible and directly interchangeable with the pins / mechanics / interfaces of 031A/032A/033A/034A/031B/032B/033B.

Positioning: 33 MHz, 32MB top-of-the-line memory,

II. Core Hardware Parameters (Same as 034A, B versions, with enhanced processing and reliability)

1) Processor

MC68040RC33, 33 MHz

32-bit, built-in FPU (hardware floating point), 8KB L1 cache, MMU

33 MHz is approximately 30% more powerful than 25 MHz model, with stronger floating point capabilities

2) Memory (Key for 034 series: 32MB top configuration)

DRAM: 32MB 32-bit ECC / parity check (standard, non-expandable)

SRAM: 128KB battery backup (data retention during power loss)

Flash/ROM: 4×44-pin PLCC, 2×32-bit storage units

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

3) Board I/O (Consistent with the series)

Ethernet: 10Mbps 10BASE-T/AUI, DMA

Serial ports: 4×EIA-232-D (1 controller + 3 users), up to 115200 bps

SCSI-2: single-ended, DMA, 20MB/s, supports 7 external devices

Parallel port: 1×IEEE 1284 bidirectional

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

Expansion: PMC expansion slot (optional)

Timers / Watchdog: 6×32-bit programmable timers + hardware WDT

4) Electrical and Environmental (B version more stringent)

Power supply: +5V DC ±5%, typical 4.0A, maximum 5.0A

Operating temperature: 0℃～+55℃ (standard), B version can withstand higher temperatures

Storage temperature: -55℃～+125℃

Cooling: forced air cooling, approximately 100 CFM

Power consumption: approximately 20W (typical)

5) Structure

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

Weight: approximately 0.7kg

III. Key Differences between 034A and 034B (B version = industrial enhanced top configuration)

PCB and layout: B version optimizes high-speed traces, strict impedance control, significantly reducing EMI/RFI

ESD / anti-interference: B version enhances electrostatic protection, surge suppression, ground plane optimization, more stable in strong electric fields / large motor environments

Firmware (167 Bugs): B version updates firmware, fixes known bugs in 034A, improves VME bus stability and compatibility

Reliability screening: B version undergoes 100% high-temperature aging, high and low temperature cycling tests, MTBF is approximately 20% higher than 034A

Application scenarios: 034A for general industrial high-end configuration; 034B for strong interference / high temperature / long-term unmanned值守 / military-grade high reliability

IV. MVME167 33MHz Memory Configuration (A/B versions are the same)

031A/B： 4MB (entry-level)

032A/B： 8MB (mainstream)

033A/B： 16MB (mid-high configuration)

034A/B： 32MB (33MHz top configuration)

V. Typical Applications

Industrial automation main control， complex motion control， machine vision， on-site big data collection， embedded multi-task industrial control， VME systems with strong interference / high temperature / long-term unmanned值守 / high reliability requirements， requiring 33MHz + 32MB top configuration memory.