I. Product Introduction

MVME167-032B is a 6U VME single-height industrial single-board computer from Motorola/Electroencephalon. It belongs to the MVME167 series with a 33MHz high-performance version and is the B revision upgraded model of MVME167-032A.

The overall pins, mechanical dimensions, and interface definitions are fully compatible with all A/B versions of the same series 031/033/034, and can be directly replaced and used.

It is positioned as a 33MHz main frequency combined with 8MB standard memory. The hardware process, anti-static, anti-interference, and firmware have been comprehensively optimized, making it suitable for medium-high performance embedded control scenarios in industrial sites with strong interference and long-term continuous unmanned operation.

II. Parameters for Use

1. Processor

Equipped with the MC68040RC33 processor, with a main frequency of 33 MHz, 32-bit architecture, built-in hardware floating-point unit FPU, 8KB level 1 cache, and memory management unit MMU. Its computing and real-time control performance is superior to the 25 MHz version of the same series.

2. Memory and Storage

Onboard 8MB 32-bit DRAM with parity check, supporting stable system operation and medium data cache; equipped with 128KB battery-backed SRAM, which can save critical configurations and historical data after power loss; reserved 44-pin PLCC firmware flash socket, supporting system firmware固化； integrated battery-backed NVRAM real-time clock to ensure system time remains intact after power loss.

3. Onboard Interfaces

Equipped with a single 10Mbps Ethernet， compatible with 10BASE-T/AUI interface mode； comes with 4 EIA-232-D serial ports， including 1 system debugging console port and 3 user communication serial ports， with a maximum baud rate of 115200bps； integrated SCSI-2 single-ended storage interface， supporting high-speed DMA transmission， capable of connecting up to 7 SCSI peripherals such as hard drives and optical drives； comes with 1 IEEE1284 bidirectional parallel interface； standard VME bus supports A32/D32 mode， with bus master mode， slave mode， and system controller functions； onboard programmable timer and hardware watchdog circuit， capable of automatically resetting to prevent system freeze.

4. Electrical and Environmental Parameters

Power supply specification is DC + 5V， typical working current 4.0A， maximum 5.0A； standard operating temperature 0℃ to + 55℃， storage temperature - 55℃ to + 125℃； uses chassis forced air cooling for heat dissipation， compatible with standard industrial chassis air ducts； Version B optimizes PCB routing， ESD static protection， and electromagnetic anti-interference capabilities， providing stronger stability in industrial working conditions.

5. Structural Specifications

Standard 6U single-height VME size， overall weight approximately 0.7kg， compatible with regular VME chassis rail installation.