ESP-12S Internal 12kΩm Pullup on chip enable?
Posted: Mon Dec 09, 2019 6:19 amHi All,
I have been looking into making a low powered IoT door/window for my heating system at home with the hope of expanding its uses for other things down the line. With that end I wanted to use the ESP-12S as it boasted ~20uA deep sleep current.
I have put together a crude breadboardand when the device is asleep there is a close to 250uA draw. I am driving the enable pin low after putting it into this low power mode. Whilst I know this isn't a lot in the grand scheme of things I was really trying to get this device to use as little power as possible.
I have got a standalone module and removed the CAN and if a grab a multi-meter and measure between chip enable and VCC I detect a 12kΩm resistor.
The module I am using is a ESP-12S from AI Thinker. According to the datasheet though there should be no pull-up on the enable line.
https://wiki.ai-thinker.com/_media/esp8 ... cation.pdf
Does anyone know anything about this? There is so much conflicting information.
Many thanks
-Chris
I have been looking into making a low powered IoT door/window for my heating system at home with the hope of expanding its uses for other things down the line. With that end I wanted to use the ESP-12S as it boasted ~20uA deep sleep current.
I have put together a crude breadboardand when the device is asleep there is a close to 250uA draw. I am driving the enable pin low after putting it into this low power mode. Whilst I know this isn't a lot in the grand scheme of things I was really trying to get this device to use as little power as possible.
I have got a standalone module and removed the CAN and if a grab a multi-meter and measure between chip enable and VCC I detect a 12kΩm resistor.
The module I am using is a ESP-12S from AI Thinker. According to the datasheet though there should be no pull-up on the enable line.
https://wiki.ai-thinker.com/_media/esp8 ... cation.pdf
Does anyone know anything about this? There is so much conflicting information.
Many thanks
-Chris