NXP Semiconductors MCX-N9 EVK Series - MCX-N9 XX-EVK Functional Description; Power supplies

NXP Semiconductors
UM12036
MCX-N9XX-EVK Board User Manual
1.8 LEDs
Table 5 describes the MCX-N9XX-EVK light-emitting diodes (LEDs) that correspond to the target MCU. The
board also has some MCU-Link-specific LEDs, which are described in Section 3.11. The LEDs are shown in
Figure 3.
Part
identifier
LED color LED name / function Description
D22 Red/green/blue RGB LED User application LEDs. Each of these LEDs can be controlled
through a user application.
D24 RED Wi-Fi LED Indicates WLAN status of IW416 Wi-Fi/Bluetooth module
D25 RED Bluetooth LED Indicates Bluetooth status of IW416 Wi-Fi/Bluetooth module
D7 Green 5 V PWR ON Indicates 5 V system power on status. When the board is
powered up, D7 turns ON.
D21 Red Reset LED Indicates system reset activity. When board reset is initiated,
for example, by pressing the SW1 reset button, the D21 LED
turns ON.
Table 5. MCX-N9XX-EVK LEDs
Figure 6 shows the circuit diagram of the RGB LEDs described in Table 5.
Figure 6. RGB LED circuit diagram
The RGB LEDs are powered by the P3V3 rail. However, these LEDs are not included in current measurements
by the MCULink Energy Monitor circuit. These LEDs are controlled by transistors, Q8 and Q9, which allow the
LEDs to operate while being controlled by GPIOs that are powered at a voltage less than P3V3.
2 MCX-N9XX-EVK functional description
This section describes the features and functions of the MCX-N9XX-EVK board. You can use the functionality
described in this section as a reference while designing your own target board.
Note: For more details on the MCX-N9XX MCU, see MCX N94x, N54x Product Family Data Sheet and MCX
Nx4x Reference Manual.
2.1 Power supplies
The MCX-N9XX-EVK board is powered with a P5V0 (5 V) power supply using one of the following source
options:
• VREG_IN_USB0 supply from full-speed (FS) USB connector (J28)
• VREG_IN_USB1 supply from high-speed (HS) USB connector (J27)
• P5V_HDR_IN supply from 5 V regulator populated at 3-pin jumper (J23) (Not populated by default)
• P5V0 supply from Arduino Shield compatible header, J3 (pin 10)
• P5V_MCU_LINK_USB supply from MCU-Link USB micro-B connector (J5)
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User manual Rev. 1 — 20 January 2024
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