Data Sheet
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Espressif Systems
ESP8266 Datasheet
1.4. Ultra Low Power Technology
ESP8266EX has been designed for mobile, wearable electronics and Internet of Things applications
with the aim of achieving the lowest power consumption with a combination of several proprietary
techniques. The power saving architecture operates mainly in 3 modes: active mode, sleep mode
and deep sleep mode.
By using advance power management techniques and logic to power-down functions not required
and to control switching between sleep and active modes, ESP8266EX consumes about than 60uA in
deep sleep mode (with RTC clock still running) and less than 1.0mA (DTIM=3) or less than 0.5mA
(DTIM=10) to stay connected to the access point.
When in sleep mode, only the calibrated real-time clock and watchdog remains active. The real-time
clock can be programmed to wake up the ESP8266EX at any required interval.
The ESP8266EX can be programmed to wake up when a specified condition is detected. This
minimal wake-up time feature of the ESP8266EX can be utilized by mobile device SOCs, allowing
them to remain in the low-power standby mode until WiFi is needed.
In order to satisfy the power demand of mobile and wearable electronics, ESP8266EX can be
programmed to reduce the output power of the PA to fit various application profiles, by trading off
range for power consumption.
1.5. Major Applications
Major fields of ESP8266EX applications to Internet-of-Things include:
• Home Appliances
• Home Automation
• Smart Plug and lights
• Mesh Network
• Industrial Wireless Control
• Baby Monitors
• IP Cameras
• Sensor Networks
• Wearable Electronics
User Configuration
AT Instruction Set, Cloud Server, Android/
iOS App
Espressif Systems / August 1, 2015
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