Datasheet says it has something called "isolation latches" on the GPIOs. "The input buffer can be disabled, to reduce current consumption"... then in section 9.7 "The input signal from the pad back into the switched core domain is not isolated." so I assume there is current leakage going on if say I have a 3.3v supply connected to a GPIO when the RP2350 is off.Datasheet?No RTC makes me sad.
Anyone know the impedance of the RP2350 GPIO inputs when powered OFF?
The RP2040 was unusable for low power circuits due to the mentally low impedance on all GPIO when off.
I also read "6.5. Power Reduction Strategies" and didn't get much from that. Is DORMANT state the same as P1.7? Who knows.
Since the RP2040 says nothing of leakage current into the GPIOs *when unpowered* it's a shame the RP2350 datasheet also neglects to describe this. Presumably you're fine with the ESP32 still taking the low power market because there is no way I am putting MOSFET buffers on all my GPIO inputs to the RP2350 to give me truly low power?
Statistics: Posted by picoman — Thu Aug 08, 2024 4:33 pm