1.1 Features

CPU and On-Chip Memory

• ESP8684H2X or ESP8684H4X embedded,

32-bit RISC-V single-core processor, up to 120

MHz

• 576 KB ROM

• 272 KB SRAM (16 KB for cache)

• In-Package flash (see details in Table 1 Series

Comparison)

• Access to flash accelerated by cache

• Supports flash in-Circuit Programming (ICP)

Wi-Fi

• 802.11 b/g/n

• Center frequency range of operating channel:

2412 ~ 2484 MHz

• Supports 20 MHz bandwidth in 2.4 GHz band

• 1T1R mode with data rate up to 72.2 Mbps

• Wi-Fi Multimedia (WMM)

• TX/RX A-MPDU, TX/RX A-MSDU

• Immediate Block ACK

• Fragmentation and defragmentation

• Transmit opportunity (TXOP)

• Automatic Beacon monitoring (hardware TSF)

• 3 × virtual Wi-Fi interfaces

• Simultaneous support for Infrastructure BSS in

Station mode, SoftAP mode, Station + SoftAP

mode, and promiscuous mode

Note that when ESP8684 series scans in

Station mode, the SoftAP channel will change

along with the Station channel

Bluetooth®

• Bluetooth LE: Bluetooth 5.3 certified

• High power mode (20 dBm)

• Speed: 125 kbps, 500 kbps, 1 Mbps, 2 Mbps

• Advertising extensions

• Multiple advertisement sets

• Channel selection algorithm #2

• Internal co-existence mechanism between Wi-Fi

and Bluetooth to share the same antenna

Peripherals

• Up to 5 GPIOs

• GPIO, SPI, UART, I2C, LED PWM controller,

general DMA controller, temperature sensor,

SAR ADC, timers and watchdog

Note:

* Please refer to ESP8684 Series Datasheet for

detailed information about the module peripherals.

Integrated Components on Module

• 26 MHz crystal oscillator

Antenna Options

• On-board PCB antenna

Operating Conditions

• Operating voltage/Power supply: 3.0 ~ 3.6 V

• Operating ambient temperature: –40 ~ 105 °C