Usb; Headers; Debug - Arduino Nano 33 BLE Sense Product Reference Manual

9.1 USB

Pin Function Type
1 VUSB Power
2 D- Differential
3 D+ Differential
4 ID Analog
5 GND Power

9.2 Headers

The board exposes two 15 pin connectors which can either be assembled with pin headers or soldered through castellated vias.
Pin Function Type
1 D13 Digital
2 +3V3 Power Out
3 AREF Analog
4 A0/DAC0 Analog
5 A1 Analog
6 A2 Analog
7 A3 Analog
8 A4/SDA Analog
9 A5/SCL Analog
10 A6 Analog
11 A7 Analog
12 VUSB Power In/Out
13 RST Digital In
14 GND Power
15 VIN Power In
16 TX Digital
17 RX Digital
18 RST Digital
19 GND Power
20 D2 Digital
21 D3/PWM Digital
22 D4 Digital
23 D5/PWM Digital
24 D6/PWM Digital
25 D7 Digital
26 D8 Digital
27 D9/PWM Digital
28 D10/PWM Digital
29 D11/MOSI Digital
30 D12/MISO Digital

9.3 Debug

On the bottom side of the board, under the communication module, debug signals are arranged as 3x2 test pads with 100 mil pitch with pin 4 removed. Pin 1 is depicted in
Figure 3 – Connector Positions
Pin Function Type
1 +3V3 Power Out
2 SWD Digital
3 SWCLK Digital In
5 GND Power
6 RST Digital In
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Description
Power Supply Input. If board is powered via VUSB from header this is an Output (1)
USB differential data -
USB differential data +
Selects Host/Device functionality
Power Ground
Description
GPIO
Internally generated power output to external devices
Analog Reference; can be used as GPIO
ADC in/DAC out; can be used as GPIO
ADC in; can be used as GPIO
ADC in; can be used as GPIO
ADC in; can be used as GPIO
ADC in; I2C SDA; Can be used as GPIO (1)
ADC in; I2C SCL; Can be used as GPIO (1)
ADC in; can be used as GPIO
ADC in; can be used as GPIO
Normally NC; can be connected to VUSB pin of the USB connector by shorting a jumper
Active low reset input (duplicate of pin 18)
Power Ground
Vin Power input
USART TX; can be used as GPIO
USART RX; can be used as GPIO
Active low reset input (duplicate of pin 13)
Power Ground
GPIO
GPIO; can be used as PWM
GPIO
GPIO; can be used as PWM
GPIO, can be used as PWM
GPIO
GPIO
GPIO; can be used as PWM
GPIO; can be used as PWM
SPI MOSI; can be used as GPIO
SPI MISO; can be used as GPIO
Description
Internally generated power output to be used as voltage reference
nRF52480 Single Wire Debug Data
nRF52480 Single Wire Debug Clock
Power Ground
Active low reset input
Arduino® Nano 33 BLE Sense / Rev. 01 - 03/12/2021
Arduino® Nano 33 BLE Sense