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MVME147-023A

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MVME147-023A
May 15, 2026

MVME147-023A

MVME147‑023A 6U VME64 Single Board Computer (SBC) Motorola / Emerson / Curtiss‑Wright Datasheet (Plain Text, No Images) – 2026 Manufacturer: Motorola (later Emerson / Curtiss‑Wright) Part Number: MVME147‑023A Form Factor: 6U VMEbus, VME64 Compliant CPU: Motorola MC68030 @ 33.33 MHz FPU: MC68882 @ 33.33 MHz Memory: 16 MB DRAM, programmable parity Revision: A = Hardware Rev A (updated PCB/components, 100% pin‑compatible with MVME147‑023) Application: Industrial control, DCS/SIS, VMEbus master, factory automation, high‑reliability 33 MHz systems requiring memory parity protection Summary: MVME147‑023A = 33.33 MHz + 16 MB DRAM (parity capable) + ETH+SCSI + Rev A

Description

MVME147-023A（2.jpg

MVME147‑023A

6U VME64 Single Board Computer (SBC)

Motorola / Emerson / Curtiss‑Wright

Datasheet (Plain Text, No Images) – 2026

Manufacturer: Motorola (later Emerson / Curtiss‑Wright)
Part Number: MVME147‑023A
Form Factor: 6U VMEbus, VME64 Compliant
CPU: Motorola MC68030 @ 33.33 MHz
FPU: MC68882 @ 33.33 MHz
Memory: 16 MB DRAM, programmable parity
Revision: A = Hardware Rev A (updated PCB/components, 100% pin‑compatible with MVME147‑023)
Application: Industrial control, DCS/SIS, VMEbus master, factory automation, high‑reliability 33 MHz systems requiring memory parity protection
Summary:
MVME147‑023A = 33.33 MHz + 16 MB DRAM (parity capable) + ETH+SCSI + Rev A

1. General Description

The MVME147‑023A is a high‑performance 6U VME64 single‑board computer, functionally and pin‑to‑pin compatible with the original MVME147‑023. It uses the MC68030 32‑bit CPU @ 33.33 MHz (integrated MMU, 256‑byte instruction/data cache) plus an MC68882 FPU @ 33.33 MHz for floating‑point intensive tasks. Onboard 16 MB DRAM with programmable parity (jumper‑selectable error detection for high‑reliability applications). Peripherals include AUI Ethernet, asynchronous SCSI (WD33C93, DMA), four EIA‑232‑D serial ports, Centronics parallel port, and battery‑backed 4 KB SRAM/RTC. The “A” revision incorporates minor hardware fixes and component upgrades while maintaining full compatibility with the base 023 model. Designed for 33 MHz industrial embedded systems requiring parity‑protected memory and integrated I/O.

2. Key Features

  • Processor: MC68030 @ 33.33 MHz, integrated MMU, 256‑byte unified cache

  • FPU: MC68882 @ 33.33 MHz, IEEE 754 compliant

  • DRAM: 16 MB, programmable parity (enable/disable via jumper)

  • EPROM: 4 sockets, up to 4 MB total (16‑bit wide)

  • Battery‑Backed SRAM: 4 KB for non‑volatile data storage

  • RTC: Battery‑backed real‑time clock (calendar/clock)

  • Onboard I/O:

    • 4 × EIA‑232‑D serial ports (Z8530)

    • 1 × Centronics‑compatible parallel port

    • 1 × asynchronous SCSI (WD33C93, DMA capable)

    • 1 × AUI 10 Mbps Ethernet (Lance AM7990)

  • VMEbus Interface:

    • Address: A16/A24/A32

    • Data: D08/D16/D32

    • Master/slave operation, system controller function

  • Timers & Watchdog: Dual 16‑bit timers, watchdog timer

  • Status LEDs: SCON, RUN, FAIL, STATUS

  • Switches: RESET, ABORT

3. Electrical Specifications

  • Power: +5 VDC, ±12 VDC

  • Logic: 5 V TTL compatible

  • VME Standard: ANSI/VITA 1‑1994, VME64 (IEEE 1014)

4. Mechanical Specifications

  • Form Factor: 6U VME

  • Dimensions: 233.4 mm × 160 mm

  • Mounting: Standard VME chassis slot

5. Environmental Specifications

  • Operating Temperature: 0 °C to +55 °C

  • Storage Temperature: −20 °C to +70 °C

  • Humidity: 5%–95% RH, non‑condensing

6. Supported Operating Systems

  • VxWorks

  • Motorola VERSAdos

  • NetBSD/mvme68k

  • Custom embedded RTOS

  • Bare‑metal programs

7. MVME147‑023 vs 023A

  • MVME147‑023: Original PCB/component revision (33 MHz, 16 MB, parity)

  • MVME147‑023A: Rev A (hardware update, minor fixes; 100% compatible in function, pinout, electricals)

  • Software, configuration, cabling, chassis: fully interchangeable

8. MVME147 33 MHz Series (02x) Quick Reference

  • MVME147‑021: 33.33 MHz, 4 MB, ETH+SCSI, no parity

  • MVME147‑022: 33.33 MHz, 8 MB, ETH+SCSI, no parity

  • MVME147‑022A: 33.33 MHz, 8 MB, ETH+SCSI, no parity (Rev A)

  • MVME147‑023: 33.33 MHz, 16 MB, ETH+SCSI, parity

  • MVME147‑023A: 33.33 MHz, 16 MB, ETH+SCSI, parity (Rev A)

  • MVME147‑024: 33.33 MHz, 32 MB, ETH+SCSI, parity


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