Usb; Headers - Arduino Nano 33 IoT Product Reference Manual

5.1 USB

Pin Function Type
1 VUSB Power
2 D- Differential USB differential data -
3 D+ Differential USB differential data +
4 ID Analog
5 GND Power
1. The board can support USB host mode only if powered via the V
pin is shorted.

5.2 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
Power
12 VUSB
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
12 / 18
Description
Power Supply Input. If board is powered via VUSB from header this is an Output
(1)
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
Arduino® Nano 33 IoT / Rev. 01 - 06/12/2021
Arduino® Nano 33 IoT
pin and if the jumper close to the VUSB
USB