I. Model Description (Key Points)

MVME167‑33B = MVME167‑033B (identical product, old model abbreviation)

Originally called: 167‑33 / MVME167‑33B

Later standard naming: MVME167‑033A / MVME167‑033B

33B = 033B, fully compatible, same specification, same interface, same board type

Positioning: 33MHz MC68040 + 16MB ECC DRAM・6U VME single high・industrial reinforced B version (mid-high configuration, high reliability, harsh environment).

II. Core Hardware Parameters (Completely consistent with 033B)

1) Processor

MC68040RC33, 33MHz

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

Approximately 40 MIPS, suitable for complex control / algorithms

2) Memory (Key: 16MB ECC for high-end configuration)

DRAM: 16MB 32-bit ECC (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: 8KB NVRAM + real-time clock (battery backup)

3) On-board I/O (Uniform for the series)

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

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

SCSI-2: single-ended, DMA, 20MB/s, 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 + hardware WDT

4) Electrical and Environmental (Enhanced in B version)

Power supply: +5V DC ±5%, typical 3.8A, maximum 4.5A

Operating temperature: 0℃～+55℃ (standard); B version can be –40℃～+85℃ (wide temperature)

Storage temperature: –55℃～+125℃

Cooling: forced air cooling, approximately 100CFM

Power consumption: approximately 18W (typical)

5) Structure

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

Weight: approximately 0.7kg

III. MVME167 33MHz Memory Step (A/B versions are the same)

031A/B (31B): 4MB ECC (entry-level)

032A/B (32B): 8MB ECC (mainstream)

033A/B (33B): 16MB ECC (mid-high configuration)

034A/B (34B): 32MB parity / ECC (mid-high top configuration)

035A/B (35B): 64MB ECC (high configuration)

036A/B (36B): 128MB ECC (top configuration)

IV. Differences between 33B (033B) and adjacent models

32B: 8MB ECC → basic mainstream, small data volume

33B: 16MB ECC → mid-high configuration, multi-tasking, data cache, ECC error correction (most commonly used industrial high reliability)

34B: 32MB ECC / parity → larger cache, complex multi-tasking, data-intensive

V. Typical Applications

Industrial automation main control, motion control, machine vision, data acquisition, embedded multi-tasking, strong interference / high temperature / wide temperature / high reliability, VME system requiring 33MHz + 16MB ECC.