XM1L - ESMexpress COM with Intel Atom XL Series (Product Discontinued)

The XM1L is a Computer-On-Module of the ESMexpress family. Together with an application-specific carrier board it forms a semi-custom solution for industrial, harsh, mobile and mission-critical environments.

The XM1L is controlled by the Intel Atom XL processor, an IA-32 core based on 45nm process technology which is qualified for the industrial temperature range. Due to the power architecture of the Intel Atom CPU, the XM1L has a total power consumption of max. 5 to 7 Watts, while having a clock frequency of up to 1.6 GHz.

The XM1L accommodates up to 2 GB of directly soldered main memory and supports other memory like USB Flash on the carrier board.

Interfaces from the Intel System Controller Hub US15WP are optimized using exclusively modern serial standards and are all routed from the XM1L for availability on any ESMexpress carrier board. Depending on the version of XM1L, those interfaces include a combination of PCI Express links, LVDS, SDVO, high-definition audio, SATA, Ethernet with wake-on-LAN functionality, and USB. Additional COM interfaces can be made available on the carrier board via USB to COM conversion.

The XM1L is completed by a board management controller for temperature and power supervision. It comes with a Phoenix Award BIOS configurable for the final application.

The XM1L is screened or qualified for operation from -50°C to +85°C (Tcase). As all ESMexpress modules it is embedded in a covered frame. This ensures EMC protection and allows efficient conductive cooling. Air cooling is also possible by applying a heat sink on top of the cover. Where operation temperatures are moderate, the module may even do without the frame and cover, with a suitable low-power processorand airflow. ESMexpress modules are firmly screwed to a carrier board and come with rugged industry-proven connectors supporting high frequency and differential signals. Only soldered components are used to withstand shock and vibration, and the design is optimized for conformal coating. All ESMexpress modules support a single 95x125mm form factor.

For evaluation and development purposes an ATX carrier board is available. The ESMexpress module can be evaluated on a COM Express carrier board via an adapter from ESMexpress to COM Express.


  • Intel Atom Z510P, Z530P, Z510PT, Z520PT
  • Up to 2 GB DDR2 SDRAM
  • Up to 2 PCI Express
  • Up to 1 Gb Ethernet
  • 1 SATA port
  • 8 USB 2.0
  • Intel HD Audio
  • -50°C to +85°C Tcase screened or qualified
  • Conduction cooling


  • Intel Atom Z510P, Z530P, Z510PT or Z520PT
    • Up to 1.6GHz processor core frequency
    • 400MHz or 533MHz system bus frequency
  • Chipset
    • Intel system controller hub US15WP
  • 512KB L2 cache integrated in Atom processor
  • Up to 2GB DDR2 SDRAM system memory
    • Soldered
    • 400/533MHz memory bus frequency locked to the FSB frequency
Serial ATA (SATA)
  • One port via ESMexpress connector
  • Transfer rates up to 100MB/s
  • Via PATA-to-SATA converter
  • Integrated in Intel System Controller Hub US15WP
  • Maximum resolution: 1600x1200 pixels
  • 1 SDVO port (not available on board version 15XM01L02)
  • 1 LVDS port
    • 112MHz maximum pixel clock
    • 18 or 24bits pixel color depths
  • Available via ESMexpress connector
  • Eight USB 2.0 host ports (or 7 host ports and 1 client port, adjustable by software)
    • Via ESMexpress connector
    • Six of these ports also support USB 1.1 (UHCI implementation)
  • EHCI implementation
  • Data rates up to 480Mbit/s
  • One 10/100/1000Base-T Ethernet channel via ESMexpress connector
  • Ethernet controller is connected by one x1 PCIe link
  • Two LED signals for LAN link, activity status and connection speed
PCI Express
  • One x1 link to connect local 1000Base-T Ethernet controller
  • One x1 link via ESMexpress connector
  • Second x1 link on ESMexpress connector instead of Ethernet
  • Data rate 250MB/s in each direction (2.5 Gbit/s per lane)
  • 1 line from PIC via ESMexpress connector
  • Usable for LED
HD audio
Via ESMexpress connector
Board Management Controller
  • Input voltage supervision
  • Power sequencing
  • Board monitoring
  • Watchdog
  • Accessible via SMBus
  • Real-time clock (with GoldCap or battery backup on the carrier board)
  • Wake-on-LAN
  • SMBus interface
Electrical Specifications
Supply voltage/power consumption:
  • +12V (9..16V), power consumption 5..7W (full load)
  • +5V standby voltage
Mechanical Specifications
  • Dimensions: 95mm x 125mm
  • ESMexpress PCB mounted between a frame and a cover
  • Weight: 224g (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: -300m to + 3,000m
  • Shock: 15g/11ms (EN 60068-2-27)
  • Bump: 10g/16ms (EN 60068-2-29)
  • Vibration (sinusoidal): 1g/10..150Hz (EN 60068-2-6)
  • Conformal coating on request
464,343h @ 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
Award BIOS
Software Support