ST STM32MP257F-EV1 User Manual page 13

6.5.2 Power source selection
It is possible to configure the STM32MP257F-EV1 Evaluation board with the JP4 header to use any of the two
sources described in
Reference
JP4
1. The default setting is in bold
In all the above power source configurations, the 5V LED (LD11) must be lit when the Evaluation board is
correctly powered by the 5V supply.
6.5.3 5 V power supply
The STM32MP257F-EV1 Evaluation board is designed to be powered by a 5V power source. It is recommended
to use a power supply able to source 15 W such as:
• VBUS 5 V connected to the CN21 connector through a USB Type-C
. The USB_PWR_CC1 and USB_PWR_CC2 lines are connected to PC3 and PC4 of the ST-LINK MCU
respectively to check what is connected to CN21 and control features enabling:
– Legacy cable
– Personal computer
– 5 V DC power source at 3 A
Depending on the current needed on the devices connected to the USB port, and the board itself, power
limitations can prevent the system from working as expected. The user must ensure that the
STM32MP257F-EV1 Evaluation board is supplied with the correct power source depending on the current
needed. It is recommended to use a USB Type-C
• Power supply source from Wall charger connected to CN20:
– It is recommended to supply the boards with a 5 to 12 V/15 W min source.
UM3359 - Rev 2
Table 4 for the 5V DC power supply.
Table 4. 5 V selection configuration jumper (JP4)
(1)
Jumper
[2-3]
[1-2]
Hardware layout and configuration
Function
5 to 12 V/3 A is supplied by a power jack (CN20).
5 V is supplied by the USB Type-C
(CN21).
®
to USB Type-C
® ®
to USB Type-C cable.
UM3359
®
connector of the ST-LINK
®
cable
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