Gpio with a level of 1.8v

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hi,

I need a gpio with a level of 1.8v to provide a voltage standard for my level shifter. Does anyone know which gpio’s voltage is 1.8v?

Thanks for your reply

2

I could be wrong, but I think on the Nano dev kit they are all 3.3V without any jumper to select 1.8V (the other Jetsons tend to have a selectable jumper which is by default 3.3V).

3

Hi linuxdev,

Do you know if there a way to change it‘s voltage value?

thanks

4

Not without a level shifter. Level shifters are fairly simple to work with and inexpensive. Basically you would provide it a 1.8V power source, a 3.3V power source, and connect one data side to the GPIO, but the other data side to whatever your hardware is.

5

Hi linuxdev,

It’s a little hard for me. Jetson Nano will be placed on a moving car model, there is no 1.8v power source on the model. But I use SPI, and there is only one slaver board. So i think pin CS could be used as voltage standard for the level shifter.

Thanks for your reply

7

please check Jetson Nano Pinmux for the IO block voltage of 1.8V pins.