OS-free CPU module

This is a CPU module on which only boot program is implemented. Any operating system (OS) which is corresponding to the boot program can be started.



  • ARM Processor
    Because of having ARM processor (Cortex-A9 MPCore,866MHz), high-speed control is possible.

  • Built-in boot program
    It provides boot measures as per the standard usage of the boot program, boot Flash memory / SD card / network. Moreover, environmental variable set up is performed through RS-232C as per the terminal.

    Double data rate mode 3 realizes high-speed data transfer and low power consumption.

    Data can be easily stored on non-volatile devices.

  • Ample I/O of e-RT3/FA-M3 is accessible
    The initialization process to access IO of e-RT3/FA-M3 is done by boot program. With developing OS drivers, user can access IO modules.

  • 10BASE-T/100BASE-TX/1000BASE-T Ethernet
    By mounting 2ch Ethernet, debug environment and application environment can be separated.

  • SD card interface (2 slot)
    SDHC memory card can be used. It has two SD card slots (SD1 and SD2). SD1 is used for system startup and always mounted. SD2 is removable.

  • PCI Interface
    By using PCI bus, high-speed data communication with utility module is possible to execute.

  • MODE Switch
    The start mode can be switched with the MODE switch at power-on and reset start.

  • Battery backup
    The internal battery can provide the power supply to RTC and SRAM when the power is cut off.
    The internal battery can be easily exchanged from the outside. A battery voltage reduction is notified with the BAT LED.


Item Specifications
CPU Cortex-A9 MPCore(Dual 866MHz)
Boot-loader U-boot 2019.04
Endian type Little endian
Memory FLASH ROM 256 MB
I/F Ethernet 10 BASE-T / 100 BASE-TX / 1000 BASE-T (2ch)
RS-232C 9.6kbps to 115.2kbps dedicated connector*1
SD SDHC memory card
PCI For utility module(32bit)
JTAG Dedicated connector
RAS function Power Discontinuity Detection Detects input power discontinuity, notification to application
WDT Monitoring application software operation status
SD card abnormality detection Mounted the overcurrent secured circuit
FAIL Signal output At abnormality detection, controls FAIL setting of power-supply module to notify exteriorly.
RTC Year, month, day, hour, minute and second and the day of the week (battery backup)
Surrounding air temperature range Operating : 0 to 55℃*2*2
Storage : -20 to 75℃
Surrounding humidity range Operating : 10 to 90%RH (non-condensing)
Storage : 10 to 90%RH (non-condensing)
Surrounding atmosphere No corrosive gas and thick dust
LED for status display RDY,RUN,ALM,ERR,SD1,SD2,COM,BAT,U1,U2,U3,OS,8,4,2,1
Rotary switch Launch mode select switch
Set Switch Launch mode set switch
Cooling type Air cooling without blower
Mounting position Slot 1 to 4 in main unit
Biggest mounting module count 4 module / 1 unit
Current consumption 1200mA
Outer dimensions 28.9(W)×100(H)×83.2(D)mm
Masses 200g(SD card is not included)

*1 : KM72-2N conversion cable (sold separately) is necessary
*2 : You must select a SD memory card that can operate in the ambient temperature between 0 ℃ and 85 ℃.

Ubuntu image for F3RP70

You can boot Ubuntu Linux by writing to the bootable SD card.

Type name Specifications

The 4GB to 32GB SDHC memory card can be used with the F3RP70.

Use a card with a large number of endurance writes such as SLC or MLC.


About Support

Dedicated driver

The dedicated driver is provided as a product of Yokogawa Electric Corporation.

  • Warranty
    No warranty. We only check the operation with the provided package.
  • Support
    No support. You will be responsible for how to use, and identifying problem causes when they occur.

Ubuntu Linux

These softwares are not products of Yokogawa Electric Corporation.
We are redistributing under each software license.

  • About license
    Follow the license of each software. Please confirm it respectively.
    Many softwares follow the GPL and LGPL. Depending on the usage, your application may need to comply with the GPL, in which case you will be obliged to publish the source code.

  • About warranty
    Follow the license of each software. Please confirm it respectively.
    No guarantee by Yokogawa Electric Corporation.

  • Aboutsupport
    No support. You will be responsible for how to use, and identify problem causes when they occur.

Please confirm before purchase

Please confirm the following contents before purchasing this product.

  • This module has only a boot loader (U-Boot). (OS is not included)
  • Any OS can be started, but it is not supported for all OS.
  • OSS (Open Source Software) is out of scoep of Yokogawa's warranty and support.




AI development is not that difficult! This tutorial video shows you how to develop AI application on e-RT3 F3RP70 by running AI sample program available on Partner Portal.

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