ESP8684-WROOM-03 is a general-purpose Wi-Fi and Bluetooth LE module. The rich set of peripherals and highperformance make this module an ideal choice for smart homes, industrial automation, health care, consumerelectronics, etc.ESP8684-WROOM-03 can be vertically soldered to a PCB board via wave soldering. The module has 8 availableGPIOs.ESP8684-WROOM-03 comes with a PCB antenna. The ESP8684H2 chip and the ESP8684H4 chip fall into the same category, namely ESP8684 chip series.ESP8684 integrates a rich set of peripherals including UART, I2C, LED PWM controller, general DMA controller,temperature sensor, and SAR ADC etc.

Features

CPU and On-Chip Memory

• ESP8684H2 or ESP8684H4 embedded, 32-bitRISC-V single-core processor, up to 120 MHz
• 576 KB ROM
• 272 KB SRAM (16 KB for cache)
• In-Package flash
• Access to flash accelerated by cache
• Supports flash in-Circuit Programming (ICP)

Wi-Fi

• IEEE 802.11 b/g/n-compliant
• 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
• 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

• GPIO, SPI, UART, I2C, LED PWM controller, general DMA controller, temperature sensor, SAR ADC, timers and watchdog

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