Esp32-s2 higher deep sleep consumption then Esp32?
Posted: Wed Jul 14, 2021 4:46 am
by JonaB111
Hello, as i want to build a battery powered application, with a long deep sleep time, i want to use an esp32-s2. However in the Datasheet it states, that it has a 4 times higher deep sleep current(20ua), than the "normal" esp32(5ua). Then on the internet i find a chart, where it states both consume only 5ua(See Attachements). What is right and if the Esp32-s2 has a 4 times higher Deep Sleep current: why?
Re: Esp32-s2 higher deep sleep consumption then Esp32?
Posted: Thu Jul 15, 2021 4:31 pm
by ESP_igrr
Hi JonaB111,
JonaB111 wrote: ↑Wed Jul 14, 2021 4:46 am
Hello, as i want to build a battery powered application, with a long deep sleep time, i want to use an esp32-s2. However in the Datasheet it states, that it has a 4 times higher deep sleep current(20ua), than the "normal" esp32(5ua). Then on the internet i find a chart, where it states both consume only 5ua(See Attachements). What is right and if the Esp32-s2 has a 4 times higher Deep Sleep current: why?
The information you found is correct, indeed ESP32-S2 chips available now have higher deep sleep current than the ESP32.
In the future there may be a new revision of ESP32-S2 silicon that improves the deep sleep current consumption, but it's not determined yet whether/when it will be made. For the time being, 20uA is the number you can expect.
Re: Esp32-s2 higher deep sleep consumption then Esp32?
Posted: Mon Dec 27, 2021 3:35 pm
by davidbeccue
So if I want to build an application that does ADC conversions 256 times per second (using ULP I'm assuming), and then store that long term in SRAM, which processor should I use for lowest power consumption?