Running VDD3P3_CPU at 1.8 Volt (ESP32-D2WD)

[Kishan]

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

[Lvxinyue]

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.