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XM50 - ESMexpress COM with PowerPC MPC8548


This product has been discontinued.

The XM50 is a rugged Computer-On-Module (COM) of the ESMexpress family featuring a PowerPC MPC8548 or MPC8543 CPU. It is designed for industrial automation, medical computers, in-vehicle computers, and embedded computers in transportation. The XM50 supports conductive cooling technology and is 100% EMC proof.

Download data sheet

  • XM50 Product ImageXM50 without cover and frame
  • XM50 Product ImageXM50 back side (without covering frame)
  • XM50 Product ImageXM50 inside the covering frame
  • XM50 Product ImageXM50 inside the covering frame mounted on the carrier board XC1
  • XM50 Product ImageXM50 mounted on the AE12 (ESMexpress Module to COM Express Carrier Adapter)
  • XM50 Product Image
  • XM50 Product Image
  • XM50 Product Image
  • XM50 Product Image
  • XM50 Product Image

Main Features

  • MPC8548 (or MPC8543), up to 1.5 GHz
  • Up to 2 GB (ECC) DDR2 SDRAM
  • Up to 128 KB FRAM, 2 MB SRAM
  • 3 (or 2) Gb Ethernet ports
  • 6 USB 2.0, 1 USB client
  • 3 SATA ports
  • 1 PCI Express x4
  • MENMON BIOS for PowerPC cards
  • -50°C to +85°C Tcase screened
  • Conduction cooling
XM50 Product Image

Technical Data

PowerPC PowerQUICC III MPC8548, MPC8548E, MPC8543 or MPC8543E
  • 800 MHz up to 1.5 GHz
  • Please see Standard Configurations for available standard versions.
  • e500 PowerPC core with MMU and double-precision embedded scalar and vector floating-point APU
  • Integrated Northbridge and Southbridge
  • 2x 32 KB L1 data and instruction cache, 512 KB / 256 KB L2 cache integrated in MPC8548/MPC8543
  • Up to 2 GB SDRAM system memory
    • Soldered
    • DDR2 with or without ECC
    • Up to 300 MHz memory bus frequency, depending on CPU
  • 16 MB boot Flash
  • 2 MB non-volatile SRAM
    • With GoldCap or battery backup on the carrier board
  • 128 KB non-volatile FRAM
  • Serial EEPROM 8 kbits for factory settings
Serial ATA (SATA)
  • Three ports via ESMexpress connector
  • SATA Revision 1.x support
  • Transfer rates up to 150 MB/s (1.5 Gbit/s)
  • Via PCI-to-SATA bridge
  • Six USB 2.0 host ports via ESMexpress connector
    • OHCI and EHCI implementation
    • Data rates up to 480 Mbit/s
  • One USB client port via ESMexpress connector
    • Via UART-to-USB converter
    • Data rates up to 115.2 kbit/s
    • 16-byte transmit/receive buffer
    • Handshake lines: none
  • Three 10/100/1000Base-T Ethernet channels with MPC8548/E
  • Two 10/100/1000Base-T Ethernet channels with MPC8543/E
  • Two LED signals per channel for LAN link and activity status and connection speed
  • Accessible via ESMexpress connector
PCI Express
  • One x1 or one x2 or one x4 link via ESMexpress connector
  • PCIe 1.x support
  • Data rate 250 MB/s in each direction (2.5 Gbit/s per lane)
  • 1 line from board controller via ESMexpress connector
  • Usable for LED
  • Real-time clock (with GoldCap or battery backup on the carrier board)
  • Temperature sensor, power supervision and watchdog
Electrical Specifications
Supply voltage/power consumption:
  • +12V (9..16 V), 12 W approx.
Mechanical Specifications
  • Dimensions: 95 mm x 125 mm (conforming to ESMexpress specification)
  • ESMexpress PCB mounted between a frame and a cover
  • Weight: 250 g (incl. cover and frame)
Environmental Specifications
  • Temperature range (operation): -50..+85°C Tcase (ESMexpress cover/frame)
  • Temperature range (storage): -50..+85°C
  • Relative humidity (operation): max. 95% non-condensing
  • Relative humidity (storage): max. 95% non-condensing
  • Altitude: -300 m to +3,000 m
  • Shock: 15 g, 11 ms (EN 60068-2-27)
  • Bump: 10 g, 16 ms (EN 60068-2-29)
  • Vibration (sinusoidal): 1 g, 10 Hz - 150 Hz (EN 60068-2-6)
209,732h @ 40°C according to IEC/TR 62380 (RDF 2000)
PCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
  • EMC behavior depends on the system and housing surrounding the ESMexpress module.
  • MEN has performed general, successful EMC tests for ESMexpress using the XC1 evaluation carrier according to:
    • EN 55022 (radio disturbance)
    • IEC 61000-4-2 (ESD)
    • IEC 61000-4-3 (electromagnetic field immunity)
    • IEC 61000-4-4 (burst)
    • IEC 61000-4-5 (surge)
    • IEC 61000-4-6 (conducted disturbances)
BIOS/Boot Loader
Software Support
  • Linux
  • VxWorks
  • QNX (on request; support of the FPU is currently not provided by QNX)
  • INTEGRITY (Green Hills Software) support available. Please contact Green Hills for further information.
  • OS-9 (on request)
  • For more information on supported operating system versions and drivers see Software.


  • Several PowerQUICC III types with different clock frequencies
  • MPC8548 or MPC8548E
    • 1 GHz, 1.2 GHz, 1.33 GHz or 1.5 GHz
  • MPC8543 or MPC8543E
    • 800 MHz or 1 GHz
  • System RAM
    • 512 MB, 1 GB or 2 GB
    • With or without ECC
  • SRAM
    • 0 MB or 2 MB
  • FRAM
    • 0 KB or 128 KB
  • Ethernet
    • Only two channels instead of three with MPC8543
  • PCI Express links: one x8 link
    • Reduces operation temperature range because of higher DDR SDRAM clock
Software Support
  • QNX (on request; support of the FPU is currently not provided by QNX)
  • OS-9 (on request)
Some of these options may only be available for large volumes.
Please ask our sales staff for more information.



General Linux BSP for A17, EM9, EM9A, EK9, F50C, F50P and XM50


VxWorks 6.4/6.5 BSP (MEN) for A17, EK9, EM9, EM9A, F50C, F50P and XM50


VxWorks 6.9 BSP (MEN) for A17, EK9, EM9, EM9A, F50C, F50P and XM50


This product is designed to work under the INTEGRITY RTOS from Green Hills Software. An INTEGRITY Board Support Package for this board is provided by Green Hills Software. For more information and product support please contact Green Hills Software (www.ghs.com).

MENMON is an MEN firmware/BIOS for PowerPC platforms.

MENMON (Firmware) for XM50, F50C and F50P (object code)


A Windows USB2UART driver from FTDI is available for XM50, XM51 and F50P/F50C Windows hosts.
More info & downloads


Data Sheets
User Manuals
Errata & Technical Information
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