3 ms·
Now that you're asking- I don't really have an answer what exactly remains powered on. I have seen reports of people achieving sub-10uA sleep currents, so my re
by fest 9y ago
Now that you're asking- I don't really have an answer what exactly remains powered on. I have seen reports of people achieving sub-10uA sleep currents, so my result could be improved by a factor of 2 (LDO I put on board has Iq of ~40uA).
I haven't looked really deep at what power modes are available for each power/clock domain- at the moment I just have the ESP waking up from RTC timer every 15 minutes and it can also be woken up manually with GPIO. It's entirely possible that I have left some peripherals at non-optimal state.
- MrBuddyCasino 9y agoI see. I haven't explored the low-power states yet, the datasheet says 5µA is possible using hibernation and timer-controlled periodic wakeup. Was curious if those numbers are achievable.
- michaelt 9y agoOn the ESP8266 I was able to get down to 16.3 µA deep sleep current. A lot of easy-to-use modules come with a USB-serial converter and a 5v-to-3.3v converter. These will draw a few microamps even when there's no USB connected - and depending on the precise hardware, some will draw far more than that. You should plan on buying a few different modules and de-soldering a few components if you want to achieve the absolute minimum current consumption :)