From ESP32S2 TRM i understand that external SRAM can be powered with 1.8V (or 3.3V; def) independant of voltage supply of internal Flash. I couldn't find that information for Pico-D4.
I read that internal Flash is powered 3.3V - can external SRAM be powered with 1.8V ?
thx TJ
Pico-D4 / VDD_SIO=1.
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