Seskion SPI Simulyzer

Hardware and software


The SPI-Simulyzer is an interface box with which on the one hand data can be read out quickly and easily, and on the other hand simulation data can be used to actively intervene in the process.

  • Simplified development of sensor technology
  • Visualization / analysis tools in the SPI software
  • Test and simulation function

Professional data simulation

Facts about the SPI-Simulyzer

In addition to the standard version, Seskion also offers modified versions as well as advanced hardware and software solutions for special measurement requirements.

    Standard Windows Gui application (optional): The protocol-specific Gui application offers a wide range of settings from the definition of signals, baud rates and error detection to trigger events. The visualization of the SPI bus communication facilitates troubleshooting and can also be easily saved. The SPI data is recorded with time stamps, whereby both import and export of data is possible.

  • API-ANSI-C (included in the box)
  • LabVIEW Lib (optional)


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InterfacesUSB 2.0 and connections for control unit and sensor
Power supplyvia USB or external plug Power supply unit
Compatible systemsWindows-7 +10, Microsoft .NET Framework 2.0, Linux (only API, no GUI)
Recording optionsDigital recording of the SPI, interfaces with 48 Mega-Samples per second
Data export.csv-file (Excel) and .tdms-file (NI)
SPI Baud ratesas control device up to 16 MBit/s, as sensor up to 8 MBit/s
ModesOut-Frame or In-Frame SPI


2.1001   SPI-Simulyzer USB-Box V2.1, 1-channel, single-ended interfaces, 1.2V..5.5V, for analysis + simulation with DLL

2.1101   SPI-Simulyzer USB-Box V2.0, 1-channel, LVDS-Interfaces for analysis + simulation with DLL

Optional hardware additions

2.2001   Optional CAN Interface – SPI Simulyzer

2.2002   Optional 2nd SPI channel analysis + sensor simulation

Software licenses

2.3001   Windows Software Package SPI Simulyzer Analysis + Sensor Simulation (Simulyzer-Box or PC-ID bound license)

2.3002   Software license for SPI sensor model; per PC workstation and per sensor model.  (Simulyzer-Box or PC-ID bound license)


2.4001   SPI-Simulyzer distribution board for controller and 3 interfaces with 3x ribbon cable

2.4002   SPI-Simulyzer distribution board -universal- for ECU and 1 interface

2.4003   SPI-Simulyzer distribution board for ECU and 1 interface with ribbon cable

2.4101   SPI-Simulyzer LVDS-single ended Pod with 2m cable

9.0001   Optional warranty extension of the Simulyzer box to 3 years

9.0003   Transport case “EXPLORER CASES” for PSI5-, DSI3-, SPI- or SENT-Simulyzer

9.0011   LabView-2016 Library, 32- or 64-bit. PC-ID or Box-SN bound license

9.0012   LabView-2016 Library, 32- or 64-bit. Company license

Serial Peripheral Interface

The Serial Peripheral Interface (SPI) is a common bus system in automotive sensor technology. ECU and peripheral sensors are connected to each other according to the master-slave principle. Each station is connected to the Serial Clock (SCLK), MISO and MOSI lines. The master synchronizes the communication via the serial clock.

  • Cascade or star connection of the master-slave connection

  • Setting at which signal edge data is output or read in
  • Selection whether MSB or LSB is transmitted first

HiL-Simulation for Airbag ECU

To generate a complete HIL simulation for an airbag control unit, the internal acceleration sensor signals of the control unit (SPI) and the peripheral acceleration and pressure sensor signals (PSI5) must be connected. Also the ignition timing can be measured and analyzed by using the SQUIB box. Furthermore, a PC system connected to the simulators via a USB port/network is used for data processing.

Often up to 6 or more PSI5-Simulyzer are operated together with several SPI-Simulyzer. For coordination there is a superordinate configuration, which determines which Simulyzer is used, which signal traces are used by which Simulyzer and which detailed configurations are to be used with the bus parameters. By using the superordinate configuration, the operation of the API is very simple. A continuous control of the sensor signals can also be made.

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