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NXP Semiconductors
UM11379
UJA116xA evaluation boards
Figure 25. UJA116xA-EVB/S32K144EVB supply and data line interconnections
A 12 V power supply needs to be connected to header J2 or to jack J6 on the UJA116xA-
). It supplies the BAT pin of the SBC via a polarity protection
diode.
The 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 SBC and 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 via
0 Ω bridge R11. 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
flexgui-app-ivn-uja116x-1.0.0.exe
to begin the installation. The
FlexGUI application starts automatically after a successful 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 (
UM11379
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© NXP B.V. 2021. All rights reserved.
User manual
Rev. 1 — 23 April 2021
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