![]() ![]() The ULP coprocessor wakes up the core processor when required.In this mode, the Ultra Low Power (ULP) coprocessor remains active while the ESP32 core and other digital peripherals remain inactive.ULP- coprocessor and RTC (real-time clock) remain active during light sleep mode and power consumption is 0.8mA.During this mode, the central processing unit is paused by turning/powering off its clock.Sleep modes can switch between modem and active modes as per the predefined intervals, by following the associated sleep pattern.Power consumption in this mode varies from 3 to 20mA. In this mode, radio, Wi-Fi, Bluetooth will be disabled and everything else will remain active.Most of the power consumption occurs in this power mode which can vary between 160 -240mA and sometimes the maximum consumption could reach up to 790mA (when both Wi-Fi and Bluetooth are enabled or active at the same time).In active mode, all the modules and features of ESP32, like processing cores, Wi-Fi, Bluetooth, radio etc.Each mode is configurable and offers different power-saving capabilities: Meanwhile, the power supply won’t be consumed by any unnecessary peripheral or inbuilt modules like Wi-Fi and Bluetooth.ĮSP32 offers 5 power modes. When ESP32 is in sleep mode, a small amount of power is required to maintain the state of ESP32 in RAM (random access memory) and retain necessary data. But when you are using a battery, as a power source to ESP32, you need to manage the power consumption for longer battery life. When you are powering the ESP32 module from the live supply using an adaptor or a USB cable, there is nothing to worry about power consumption. ![]() Along with multiple wireless and processing features, ESP32 also provides us with a power-saving feature by offering sleep modes.
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