u-blox EVK-NINA-B3 Series, User Manual

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EVK-NINA-B3 - User Guide
UBX-17056481 - R03 Product description Page 16 of 31
Conn. Pin
No. Raspberry
Pi pin Description Schematic
net name nRF52
pin Alternate functions and notes
J14 1 3.3 V 3.3 V supply pin 3V3_PI - Not connected by default, see section 1.6
2 5 V 5 V supply pin 5V - Cannot be used as supply input. Supplied
by USB VBUS and protected from back
powering.
3 GPIO02 Digital I/O GPIO_5 P0.24
4 5 V 5 V supply pin 5V - Cannot be used as supply input. Supplied
by USB VBUS and protected from back
powering.
5 GPIO03 Digital I/O GPIO_4 P0.16
6 GND Ground GND GND
7 GPIO04 Digital I/O GPIO_3 P0.15
8 GPIO14 Digital I/O, UART TX/RX RASP_TXD P0.29 Connected to NINA UART_RXD pin by
default, see section 1.8.2
9 GND Ground GND GND
10 GPIO15 Digital I/O, UART RX/TX RASP_RXD P1.13 Connected to NINA UART_TXD pin by
default, see section 1.8.2
11 GPIO17 Digital I/O GPIO_2 P0.14
12 GPIO18 Digital I/O GPIO_1 P0.13
13 GPIO27 Digital I/O GPIO_52 P0.19 Connected to NINA through a solder bridge,
if the solder bridge is cut this pin will be left
floating
14 GND Ground GND GND
15 GPIO22 Digital I/O GPIO_51 P0.17 Connected to NINA through a solder bridge,
if the bridge is cut this pin will be left
floating
16 GPIO23 Digital I/O GPIO_50 P0.20 Connected to NINA through a solder bridge,
if the bridge is cut this pin will be left
floating
17 3.3 V 3.3 V supply pin 3V3_PI - Not connected by default, see section 1.6
18 GPIO24 Digital I/O GPIO_49 P0.22 Connected to NINA through a solder bridge,
if the bridge is cut this pin will be left
floating
19 GPIO10 Digital I/O GPIO_48 P0.21 Connected to NINA through a solder bridge,
if the bridge is cut this pin will be left
floating
20 GND Ground GND GND
21 GPIO09 Digital I/O GPIO_47 P0.23
Connected to NINA through a solder bridge,
if the bridge is cut this pin will be left
floating
22 GPIO25 Digital I/O GPIO_46 P0.12
23 GPIO11 Digital I/O GPIO_45 P0.07
24 GPIO08 Digital I/O GPIO_44 P0.27
25 GND Ground GND GND
26 GPIO07 Digital I/O GPIO_43 P0.06
27 ID_SD EEPROM config I2C data
signal GPIO_42 P0.26 Should only be used to read or simulate
HAT EEPROMs, see section 1.8.3
28 ID_SC EEPROM config I2C clock
signal GPIO_41 P1.14 Should only be used to read or simulate
HAT EEPROMs, see section 1.8.3
29 GPIO05 Digital I/O GPIO_40 P1.15
30 GND Ground GND GND
31 GPIO06 Digital I/O GPIO_39 P1.11