Jetson Orin Nano Expansion Header J12 Pinout

By default, I2C and UART pins are assigned. All other pins (except power and ground) are assigned as GPIO. Pins labeled with other functions below are suggested functions.

Notes

I2C

Pins 3 and 5 are on I2C bus 7

For detection:

$ sudo i2cdetect -y -r 7

Pins 27 and 28 are on I2C bus 1. For detection:

$ sudo i2cdetect -y -r 1

On I2C bus 1, there are existing devices on 0x40, 0x25. These are denoted as UU by i2cdetect

4-26-2023 – Preliminary

• Same layout as Xavier NX
• There are two GPIO bases 316 & 348. All pins are based from 348
• First number is the GPIO number within a GPIO controller
• Second ( gpioXXXX ) is the global Linux GPIO number
• Pin 15 – When configured as PWM:
  • PWM chip sysfs directory: /sys/devices/3280000.pwm
  • PWM ID within PWM chip: 0
• Pin 33 – When configured as PWM:
  • PWM chip sysfs directory: /sys/devices/32c0000.pwm
  • PWM ID within PWM chip: 0