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 14 GPIOs
– 2 strapping GPIOs
• GPIO, SPI, UART, I2C, LED PWM controller,
general DMA controller, SAR ADC, temperature
sensor, general-purpose timers, system timers,
and watchdog timers
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
Certification
• Bluetooth certification: BQB
• Green certification: RoHS/REACH
Test
• HTOL/HTSL/uHAST/TCT/ESD/Latch-up