Get Started with the KITFS84AUTEVM

This page will assist you in learning about your KITFS84AUTEVM board.

2. Get to know the hardware

2.1 Board features

  • VBAT power supply connectors (Jack and Phoenix)
  • VPRE output capability up to 1.0 A (external MOSFET)
  • VBUCK1 up to 3.6 Apeak
  • VBUCK3 up to 3.6 Apeak
  • VBOOST 5.0 V or 5.74 V, up to 400mA
  • LDO1 and LDO2, from 1.1 V to 5.0 V, up to 400 mA
  • Ignition key switch
  • FS0B external safety pin
  • Embedded USB connection for easy connection to software GUI (access to SPI bus, IOs, RSTB, FS0B, INTB, Debug, MUX_OUT, regulators)
  • LEDs that indicate signal or regulator status
  • Support OTP fuse capabilities
  • USB connection for register access, OTP emulation and programming

2.2 Board description

The KITFS84AUTEVM provides flexibility to play with all the features of the device and make measurements on the main part of the application. The KL25Z MCU installed on the board, combined with the FlexGUI software, allows access to the registers in read and write mode. All regulators are accessible through connectors. Non-user signal, like DC/DC switcher node is mapped on test points. Digital signals (SPI, RSTB, etc.) are accessible through connectors. Pin WAKE1 has a switch to control them (ignition) them. A VBAT switch is available to power the device on or off.

This board can be operated in emulation mode or in OTP mode. In emulation mode, as long as the power is supplied, the board configuration stays valid. The OTP mode uses the fused configuration. The device can be fused three times. In OTP mode, the device always starts with the fused configuration, except if the user wants to overwrite OTP configuration using emulation mode. This board is able to fuse the OTP without any extra tools or board.

2.3 Board components

Overview of the KITFS84AUTEVM evaluation board

  1. VBAT Jack connector
  2. VBAT three position switch
  3. VBAT Phoenix connector
  4. LDO1/LDO2 power supplies
  5. VPRE power supply
  6. BUCK1 power supply
  7. USB connector (for FlexGUI control)
  8. Debug connectivity
  9. Programming
  10. Wake1 switch
  11. OTP burning voltage switch
  12. VBOOST and BUCK3 power supply
  13. DEBUG voltage source
  14. FIN frequency selection

Table 1. Evaluation board component descriptions

2.4 Additional board support

Refer to UM11502, KITFS84AUTEVM evaluation board user manual for additional details on the featured components.

3. Configure the hardware


To configure the hardware and workstation, complete the following procedure:

  1. Install jumpers for the configuration.

    Table 2. Jumper configuration

  2. Configure switches for the configuration

    Table 3. Switch configuration

  3. Connect the Windows PC USB port to the KITFS84AUTEVM development board using the provided USB 2.0 cable.
    Set the DC power supply to 12 V and current limit to 1.0 A. With power turned off, attach the DC power supply positive and negative output to KITFS84AUTEVM VBAT Phoenix connector (J1).
  4. Turn on the power supply.
  5. Close SW2.

Note: At this step, the product is in debug mode and all regulators are turned off. The user can then power up with OTP configuration or configure the mirror registers before power up. Power up is effective as soon as J3 jumper is removed.

3.1 Additional board support

Refer to UM11502, KITFS84AUTEVM evaluation board user manual for additional details on the hardware configuration.

4. Install software

This development kit uses FlexGUI software. FlexGUI software is based on Java JRE.

Preparing the Windows PC workstation consists of three steps.

  • Install the appropriate Java SE runtime environment (JRE)
  • Install Windows 7 FlexGUI driver
  • Install FlexGUI software package

4.1 Install the Java JRE

  1. Download Java JRE, available at (8u162 or newer)
  2. Open the installer and follow the installation instructions
  3. Following the successful installation, restart the computer

4.2 Install Windows 7 FlexGUI driver

On Windows 7 PCs, a virtual COM port installation is required. Install the Windows 7 FlexGUI driver using the following procedure.

Note: On Windows 10, it is not necessary to install virtual com port as Windows 10 uses a generic COM port driver.

  1. Connect the kit to the computer.
  2. On the Windows PC, open the Device Manager.
  3. In the Device Manager window, right-click on SECON FLEX GUI SLAVE and then select Properties. GS-KITFS84AUTEVM-IMG3
  4. In the SECON FLEX GUI SLAVE Properties window, click Update Driver. GS-KITFS84AUTEVM-IMG4
  5. In the Update Software Driver window, select Browse my computer for driver software. GS-KITFS84AUTEVM-IMG5
  6. Select Let me pick from a list of device drivers on my computer, and then click Next. GS-KITFS84AUTEVM-IMG6
  7. Select Ports (COM & LPT) from the list, and then click Next. GS-KITFS84AUTEVM-IMG7
  8. Click Have Disk. GS-KITFS84AUTEVM-IMG8
  9. Click Browse. GS-KITFS84AUTEVM-IMG9
  10. In the Locate File window, locate and select fsl_ucwxp and then click Open. GS-KITFS84AUTEVM-IMG10
  11. In the Install from Disk window, click OK. GS-KITFS84AUTEVM-IMG11
  12. If prompted, in the Windows Security window, click Select this driver software anyway. GS-KITFS84AUTEVM-IMG12
  13. Close the window when the installation is complete. GS-KITFS84AUTEVM-IMG13
  14. In the Virtual Com Port Properties window, verify that the device is working properly, and then click Close. GS-KITFS84AUTEVM-IMG14

The Virtual Com Port appears in the Device Manager window.


4.3 Install FlexGUI software package

The FlexGUI software installation only requires extracting the zip file in a desired location.

  1. If necessary, install the Java JRE and Windows 7 FlexGUI driver.
  2. Download the latest FlexGUI (32-bit or 64-bit) version, available at
  3. Extract all the files to a desired location on your PC.
    FlexGUI is started by running the batch file, \bin\flexgui-app-spm.bat.

4.4 Additional board support

Refer to UM11502, KITFS84AUTEVM evaluation board user manual for additional software details.

4.5 Ready to use

Start embedded application development.

5. Learn more

5.1 Product summary page

The product summary page for FS8400 is available at

5.2 Tool summary page

The tool summary page for KITFS84AUTEVM board is at

The page provides overview information, technical and functional specifications, ordering information, documentation and software. The Get Started guide provides quick-reference information applicable to using the KITFS84AUTEVM board, including the downloadable assets.

5.3 References

In addition to our FS8400 safety system basis chip for S32 microcontrollers, you may also want to visit:

Product pages:

Application pages:

Freedom pages:

Hardware pages:

Software pages:

5.4 Buy the board

KITFS84AUTEVM: Evaluation board for FS84 QFN48EP Safety System Basis Chip for S32 Microcontrollers