Data Sheet

8 | P a g e Espressif Systems Oct 12, 2013
ESP8266 802.11bgn Smart Device
5 Ultra Low Power Technology
ESP8266 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 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, ESP8266 consumes less than
12uA in sleep mode and less than 1.0mW (DTIM=3) or less than 0.5mW (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 ESP8266 at any required interval.
The ESP8266 can be programmed to wake up when a specified condition is detected. This
minimal wake-up time feature of the ESP8266 can be utilized by mobile device SOCs, allowing
them to remain in the low-power standby mode until Wi-Fi is needed.
In order to satisfy the power demand of mobile and wearable electronics, ESP8266 can be
programmed to reduce the output power of the PA to fit various application profiles, by trading
off range for power consumption.
5.1 Highest Level of Integration
By integrating the costliest components such as power management unit, TR switch, RF balun,
high power PA capable of delivering +25dBm (peak), ESP8266 ensures that the BOM cost is the
lowest possible, and ease of integration into any system.
With ESP8266, the only external BOM are resistors, capacitors, and crystal.