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NXP Semiconductors
UM11758
UJA1169A evaluation boards
Figure 24. UJA119A-EVB/S32K144EVB supply and data line interconnections
A 12 V power supply must be connected to header J2 or to jack J6 on the UJA1169A-
). It supplies the BAT pin of the SBC via a polarity protection
diode.
The 3.3 V or 5 V output from the SBC is routed to the microcontroller board via jumper
J7, where it supplies the main MCU.
The SPI signals are routed directly between the SBC and the main MCU via header J4
and its counterpart J2.
The RSTN signal on the SBC is connected to the reset input on the main MCU. When
terminals 2 and 3 of header J104 are connected with a jumper, pushbutton SW5 on the
MCU board allows the RSTN signal to be pulled LOW manually. This function could be
used, for example, when restoring the MTPNV register factory preset values.
The USB MCU is powered via the USB interface. The signals between main MCU and
USB MCU are passed through level shifters that serve as a bridge between the two
supply domains.
6.3 Installing the FlexGUI on a PC
Double-click on file
NXP_UJA1169Ax_GUI-1.0.0.msi
to begin the installation.
6.4 Using the FlexGUI
6.4.1 Starting the FlexGUI application
FlexGUI can be started via the Windows Start menu or the shortcut symbol on the
desktop (
UM11758
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User manual
Rev. 1 — 19 April 2022
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