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

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EVK-NINA-B3 - User Guide
UBX-17056481 - R03 Product description Page 13 of 31
Conn. Pin
No. Arduino
pin Description Schematic
net name nRF52
pin Alternate functions and notes
J1 1 N/C Not Connected - - Not connected
2 IOREF I/O reference voltage level.
Selectable by user to 1.7 – 3.6 V VDD_IO - See section 1.6
3 RESET Reset signal input. Active low logic RESET_N P0.18
4 3.3V 3.3 V DC regulated supply output 3V3 -
5 5V 5 V regulated supply output 5V - Cannot be used as supply input, use
VIN instead. Only supplied by USB
VBUS.
6 GND Ground GND GND
7 GND Ground GND GND
8 VIN External DC supply input, 5 – 12 VDC VIN -
J2 1 A0 Analog input GPIO_25 P0.04 Analog function capable GPIO
2 A1 Analog input GPIO_24 P0.30 Analog function capable GPIO
3 A2 Analog input GPIO_27 P0.05 Analog function capable GPIO
4 A3 Analog input SWITCH_2/
GPIO_18 P0.02 Analog function capable GPIO,
SWITCH_2 on NINA-B31.
This signal is pulled low when the
button SW2 is pressed
5 A4 Analog input UART_DSR/
GPIO_17 P0.28 Analog function capable GPIO,
UART_DSR signal on NINA-B31
6 A5 Analog input UART_DTR/
GPIO_16 P0.03 Analog function capable GPIO,
UART_DTR signal on NINA-B31
J3 1 D0/RX Digital I/O, UART RX UART_RXD/
GPIO_23 P0.29 UART_RXD signal on NINA-B31
2 D1/TX Digital I/O, UART TX UART_TXD/
GPIO_22 P1.13 UART_TXD signal on NINA-B31
3 D2 Digital I/O UART_CTS/
GPIO_21 P1.12 UART_CTS signal on NINA-B31
4 D3 Digital I/O UART_RTS/
GPIO_20 P0.31 UART_RTS signal on NINA-B31
5 D4 Digital I/O GPIO_1 P0.13
6 D5 Digital I/O GPIO_32 P0.11
7 D6 Digital I/O GPIO_28 P0.09 Signal not connected by defualt,
configured for NFC use
8 D7 Digital I/O GPIO_29 P0.10 Signal not connected by defualt,
configured for NFC use
J4 1 D8 Digital I/O GPIO_33 P1.09
2 D9 Digital I/O GPIO_46 P0.12
3 D10 Digital I/O GPIO_2 P0.14
4 D11 Digital I/O GPIO_3 P0.15
5 D12 Digital I/O GPIO_8 P1.00
6 D13 Digital I/O GPIO_45 P0.07
7 GND Ground GND
8 AREF Analog reference voltage level - - Not connected
9 SDA I2C data signal GPIO_4 P0.16
10 SCL I2C clock signal GPIO_5 P0.24
Table 8: Pinout of the Arduino UNO R3 compatible interface