ESP8684-WROOM-03 is a general-purpose Wi-Fi and Bluetooth LE module. The rich set of peripherals and high performance make this module an ideal choice for smart homes, industrial automation, health care, consumer electronics, etc. ESP8684-WROOM-03 can be vertically soldered to a PCB board via wave soldering. The module has 8 available GPIOs. 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-bit RISC-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
