MVME147‑024A

6U VME64 Single Board Computer (SBC)

Motorola / Emerson / Curtiss‑Wright

Datasheet (Plain Text, No Images) – 2026

Summary:

MVME147‑024A = 33.33 MHz + 32 MB DRAM (parity) + ETH+SCSI + Rev A (updated)

1. General Description

2. Key Features

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

• FPU: MC68882 @ 33.33 MHz, IEEE 754 compliant

• DRAM: 32 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 Supply: +5 VDC, ±12 VDC

• Logic Levels: 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

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

6. Supported Operating Systems

• VxWorks

• Motorola VERSAdos

• NetBSD/mvme68k

• Custom embedded RTOS

• Bare‑metal programs

7. MVME147‑024 vs 024A

• MVME147‑024: Original PCB/component revision (33 MHz, 32 MB, parity)

• MVME147‑024A: Rev A (PCB refinements, upgraded components, thermal improvements; 100% compatible in function, pinout, electricals)

• Software, configuration, cabling, chassis: fully interchangeable

8. MVME147 33 MHz Series (02x) Complete Summary

• 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

• MVME147‑024A: 33.33 MHz, 32 MB, ETH+SCSI, parity (Rev A)