u-blox EVK-NINA-B50, User Manual

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EVK-NINA-B50 - User guide
UBX-23007761 - R02 Board configuration Page 15 of 37
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Default power configuration, 3.3 V
Figure 9 shows the default “out -of-the- box” power configuration for the evaluation board. In this
configuration, all board peripherals are powered up and the NINA module is directly supplied by the
board. Everything runs at 3.3 V.
Figure 9: Jumper positions for default power configuration
Connector Add jumper to pins Description
J7 7, 8 Selects the board regulated 3.3 V net as source for the VDD_NINA net.
9, 10 Powers up the Interface MCU, USB hub, and UART to USB converter with 3.3 V.
J22 1, 3 Powers up the NINA module. The NINA VCC and VCC_IO pins are connected to the
selected source for the VDD_NINA net.
2, 4 Powers up the peripherals directly connected to NINA such as LEDs and external
memory with the NINA supply voltage.
Table 3: Jumper positions for default power configuration
J7
B
O
ARD
NINA
3V3
3 4
2
1
J22
V
C
C
_IO
V
C
C
7
8
9
10
NINA module power board I/O power
J22: 2-4 J22: 1-3
PC communication
MCU
DC/DC
EVB powered
J7: 9-10 J7: 7-8