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atomic14 / esp32-s3-pinouts

ESP32-S3 Pinout Quick Guide
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Are there pins that should be isolated (if not used) during sleep, to minimize current consumption? #2

Open peteDDD opened 9 months ago

peteDDD commented 9 months ago

Again, really great, and needed reference.

On the original ESP32, GPIO_12 was normally isolated during sleep to save power.

// Isolate GPIO12 pin from external circuits. This is needed for modules // which have an external pull-up resistor on GPIO12 (such as ESP32-WROVER) // to minimize current consumption. rtc_gpio_isolate(GPIO_NUM_12);

Have you found any pins that should be similarly isolated on the ESP32-S3?

cgreening commented 9 months ago

Thanks!

As far as I can see, there's nothing mentioned in the data sheet

peteDDD commented 9 months ago

I wonder if such was "mentioned" in the ESP32 data sheet or was this just something folks found along the way.

cgreening commented 9 months ago

Hmm there's this: https://docs.espressif.com/projects/esp-idf/en/v4.4/esp32s3/api-reference/system/sleep_modes.html#configuring-ios

Maybe it's referring to some of the strapping pins that have default pull up/down

peteDDD commented 9 months ago

I will play with/research this some more and let you know what I learn. Cheers.