Data Sheet

3. Functional Description

3.5. Wi-Fi

ESP8266EX implements TCP/IP, the full 802.11 b/g/n/e/i WLAN MAC protocol and Wi-Fi

Direct speciﬁcation. It supports not only basic service set (BSS) operations under the

distributed control function (DCF) but also P2P group operation compliant with the latest

Wi-Fi P2P protocol. Low level protocol functions are handled automatically by ESP8266EX.

• RTS/CTS

•

acknowledgement

• fragmentation and defragmentation

• aggregation

•

frame encapsulation (802.11h/RFC 1042)

• automatic beacon monitoring / scanning, and

• P2P Wi-Fi direct

Like P2P discovery procedure, passive or active scanning is performed autonomously once

initiated by the appropriate command. Power management is handled with minimum

interaction with host to minimize active duty period.

3.6. Power Management

ESP8266EX is designed with advanced power management technologies and intended for

mobile devices, wearable electronics and the Internet of Things applications.

The low-power architecture operates in 3 modes: active mode, sleep mode and Deep-

sleep mode. ESP8266EX consumes about 20 μA of power in Deep-sleep mode (with RTC

clock still running) and less than 1.0 mA (DTIM=3) or less than 0.6 mA (DTIM=10) to stay

connected to the access point.

Espressif

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