Running VDD3P3_CPU at 1.8 Volt (ESP32-D2WD)

Kishan
Posts: 1
Joined: Wed Jan 16, 2019 6:39 pm

Running VDD3P3_CPU at 1.8 Volt (ESP32-D2WD)

Postby Kishan » Wed Jan 16, 2019 6:48 pm

Hello,

Is it possible to run VDD3P3_CPU at 1.8 volt while all other supplies are at 2.7 Volt?

If so, is it safe to assume that all IOs will operate at 1.8 volt?

Thank you very much in advace for help.

Kishan
Last edited by Kishan on Thu Jan 17, 2019 8:32 pm, edited 1 time in total.

ESP_Lvxinyue
Posts: 33
Joined: Fri Dec 25, 2015 6:13 am

Re: Running VDD3P3_CPU at 1.8 Volt (ESP32-D2WD)

Postby ESP_Lvxinyue » Thu Jan 24, 2019 4:00 am

Kishan wrote:
Wed Jan 16, 2019 6:48 pm
Hello,

Is it possible to run VDD3P3_CPU at 1.8 volt while all other supplies are at 2.7 Volt?

If so, is it safe to assume that all IOs will operate at 1.8 volt?

Thank you very much in advace for help.

Kishan
Hi,

Is it possible to run VDD3P3_CPU at 1.8 volt while all other supplies are at 2.7 Volt?

Yes.

If so, is it safe to assume that all IOs will operate at 1.8 volt?

Not all IOs, but those in the VDD3P3_CPU power domain. You can refer to the IO_MUX sheet in the ESP32 datasheet: https://www.espressif.com/sites/default ... eet_en.pdf.

Thanks.

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