7.10 Buttons and LEDs
The B2 black button located on the top side is the reset of the STM32U585AII6Q microcontroller. Refer to
Figure 3.
The B3 blue button located on the top side is available to be used as a user button. Refer to Figure 3.
The LD6 and LD7 green LEDs located on the top side are available for the user. To light a LED, a HIGH logic
state must be written in the corresponding GPIO. Table 23 gives the assignment of the control ports to the LED
indicators.
Table 23. Button and LED control ports
I/O Reference Color Name Comment
NRST B2 Black RST System reset
- B1 Black BT_RST
Bluetooth
®
module reset
PC13 B3 Blue USER User button
- LD3 Bicolor (red and green) COM Blinking when flashing or debugging
- LD4 Red STLK_OVC
Red when the current is upper than
500 mA
PH7 LD7 Green LD7 User LED lights up when PH7 is set to 0.
PH6 LD6 Red LD6 User LED lights up when PH6 is set to 0.
- LD5 Green PWR Available 5 V
PE13 LD2 Blue ARD
ARDUINO
®
LED lights up when PE13 is
set to 1.
- LD1 Green 5V_USB Available VBUS_C
UM2839
Buttons and LEDs
UM2839 - Rev 4
page 31/54
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