EVK-NINA-B4 - User guide
UBX-19054587 - R04
Board configuration
Page 16 of 40
C1 - Public
Connector
Pin no.
Schematic net
Description
J7
1
3V3
Regulated 3.3 V net. This net is supplied by the board and will always be
powered as long as a power source is connected.
2
3V3_PI
Connects to
the Raspberry Pi header’s (J14) 3V3 pins. If a Raspberry Pi is
connected, this net must be unconnected to prevent back currents. If a HAT is
connected, this net can be shorted to the EVK 3.3 V supply to power the HAT.
3
VBAT_DIODE
To protect the battery from current back surges, connect the battery to the
NINA module via a protection diode using this pin.
4
VDD_NINA
Connects to J22 pin 3, from where it can be connected to the module supply
pin or somewhere else.
5
VBAT
B terminal
6
VDD_NINA
Connects to J22 pin 3, from where it can be connected to the module supply
pin or somewhere else.
7
3V3
Regulated 3.3 V net. This net is supplied by the board and will always be
powered as long as a power source is connected.
8
VDD_NINA
Connects to J22 pin 3, from where it can be connected to the module supply
pin or somewhere else.
9
3V3
Regulated 3.3 V net. This net is supplied by the board and will always be
powered as long as a power source is connected.
10
VDD_MCU
Supply net for the board functions not directly connected to the NINA module;
Interface MCU, USB hub, UART to USB converter etc.
11
GND
Ground net
12
GND
Ground net
J22
1
VCC
NINA module voltage supply that connects to the module VCC pin. Shorted to
the VCC_IO net via 0
Ω
resistor R4 by default.
2
VCC_IO
Connects to the NINA module VCC_IO pin. Shorted to the VCC net via 0
Ω
resistor R4 by default.
3
VDD_NINA
Connects to J7 pins 4, 6 and 8. Short J22 pins 1 and 3 allow the EVK to power
the NINA module.
4
VDD_IO
Supply net for level shifters, LEDs and peripherals connected directly to the
NINA module. Short J22 pins 2 and 4 use the NINA module I/O voltage as
supply.
5
GND
Ground net
6
GND
Ground net
Table 2: Pinout of jumper headers J7 and J22 used to configure the board power nets
