ESP8684 datasheet(41/60 Pages) ESPRESSIF

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4 Functional Description

4.3.2.1 Wi-Fi Radio and Baseband

The ESP8684 series Wi-Fi radio and baseband support the following features:

• 802.11b/g/n

• 802.11n MCS0-7 that supports 20 MHz bandwidth

• 802.11n 0.4 µs guard interval

• Data rate up to 72.2 Mbps

• RX STBC (single spatial stream)

• Adjustable transmitting power

• Antenna diversity

ESP8684 series supports antenna diversity with an external RF switch. This switch is controlled by one

or more GPIOs, and used to select the best antenna to minimize the effects of channel imperfections.

4.3.2.2

Wi-Fi MAC

ESP8684 series implements the full 802.11b/g/n Wi-Fi MAC protocol. It supports the Basic Service Set (BSS)

STA and SoftAP operations under the Distributed Control Function (DCF). Power management is handled

automatically with minimal host interaction to minimize the active duty period.

The ESP8684 series Wi-Fi MAC applies the following low-level protocol functions automatically:

• Three virtual Wi-Fi interfaces

• Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode

• RTS protection, CTS protection, Immediate Block ACK

• Fragmentation and defragmentation

• TX/RX A-MPDU, TX/RX A-MSDU

• Transmit opportunity (TXOP)

• Wi-Fi multimedia (WMM)

• CCMP, TKIP, WEP, BIP, WPA2-PSK/WPA2-Enterprise, and WPA3-PSK/WPA3-Enterprise

• Automatic beacon monitoring (hardware TSF)

4.3.2.3 Networking Features

Espressif provides libraries for TCP/IP networking and other networking protocols over Wi-Fi. TLS 1.2 (default)

and 1.3 are also supported.

4.3.3 Bluetooth LE

This subsection describes the chip’s Bluetooth capabilities, which facilitate wireless communication for

low-power, short-range applications.

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ESP8684 Series Datasheet v2.0

ESP8684 Datasheet(PDF) 41 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.