ESP8684-MINI-1-H4 WiFi Electronic Chip Module, RISC-V Architecture, Bluetooth 5.0 Dual-Mode, 4MB Flash, IoT Development Board
This high-performance WiFi SoC module is built on the Espressif ESP8684 chip, featuring an advanced RISC-V 32-bit single-core processor with a clock speed up to 120MHz, designed specifically for resource-constrained IoT devices. The module integrates dual wireless connectivity: Wi-Fi (802.1b/g/n) and Bluetooth 5.0 (Bluetooth LE), supporting 2.4GHz bands for fast, stable transmission. With onboard 4MB SPI Flash, it provides ample space for complex firmware and OTA remote updates. Measuring just 13.2mm x 16.6mm, the module uses a PCB-integrated antenna to save valuable internal space in end products. It offers rich peripheral interfaces (GPIO, UART, I2C, SPI, etc.), operates across a wide temperature range of -40°C to 105°C, and is ideal for smart home sensors, industrial control, wearables, and low-power Bluetooth beacons. As a premium wireless communication module, it delivers exceptional value and development flexibility.
In Stock (50units
Product Overview
This compactWiFi electronic chip moduleDesigned for IoT edge computing, it perfectly balances high performance with low power consumption. Powered by the ESP8684 RISC-V processor...
The processor not only supports standard Wi-Fi connectivity but also features Bluetooth 5.0 Mesh networking capabilities, making it an ideal choice for building a smart home hub. The module integrates RF components internally.
Switches, baluns, power amplifiers, and power management units greatly simplify peripheral circuit design. Its unique PCB-embedded antennas are impedance-matched for optimal performance, eliminating the need for additional components.
The antenna connector enables excellent wireless coverage. For developers, thisWiFi electronic chip moduleFully compatible with ESP-IDF and Arduino development environments, with rich
GPIO resources support multiple communication protocols such as UART, I2C, and SPI, enabling seamless integration with various sensors and actuators. Whether for smart plugs, temperature and humidity sensors, or...
Industrial data collection terminals provide stable and reliable wireless connectivity solutions.
Key Features
RISC-V Architecture's Low-Power Advantage: Compared to traditional ARM architectures, thisWiFi electronic chip moduleThe adopted RISC-V core maintains the 120MHz clock frequency while significantly
Significantly reduces power consumption, extending battery life for battery-powered devices.
Dual-mode concurrent connection capability: Supports coexistence of Wi-Fi and Bluetooth 5.0, enabling devices to simultaneously connect to cloud servers and local Bluetooth peripherals (e.g., phone-based provisioning) for enhanced
Flexible interaction experience.
Large-capacity storage supports OTA: Features 4MB onboard Flash storage—double that of similar 2MB modules—providing ample space for complex business logic and future over-the-air firmware updates.
(OTA) has ample headroom reserved.
Minimalist peripheral circuit designThe highly integrated SoC design reduces the number of external components, lowers BOM costs and PCB routing complexity, and accelerates product development from prototype to market.
Mass production launch timeline.
Wide-temperature industrial-grade reliabilityOperating temperature range: -40°C to 105°C, ensuringWiFi electronic chip moduleOperates reliably in extreme environments, meeting industrial control and...
Rugged requirements for outdoor equipment.
Rich API extensibility: Provides up to 18 programmable GPIO pins with support for ADC, PWM, touch sensors, and more to meet diverse hardware development needs.
Technical Specifications Table
Parameter Items | Specifications | Notes |
|---|---|---|
Core Chip | ESP8684 (RISC-V 32-bit) | Single-core, up to 160 MHz |
Wireless Protocol | Wi-Fi 802.11b/g/n + BLE 5.0 | Supports Mesh Networking |
Flash storage | 4 MB | OTA updates supported |
SRAM Capacity | 272 KB (with 16KB Cache) | High-Speed Data Cache |
Operating Voltage | 3.0V - 3.6V (typical 3.3V) | Wide voltage input |
Operating Temperature | -40°C ~ +105°C | Industrial-grade wide temperature |
Module Size | 13.2mm × 16.6mm × 2.4mm | Ultra-compact package |
Antenna Type | PCB-mounted antenna | Typical Gain: 2dBi |
Transmit Power | Wi-Fi: 19.5dBm / BLE: 2 dBm | High-Power Mode |
Interface Type | GPIO, UART, I2C, SPI, PWM, ADC | Expand peripheral interface options |
Frequently Asked Questions (FAQ)
Q1: This Wi-FiElectronic Chip ModuleWhat is the difference from the ESP32 series?
A: ESP8684 is a cost-effective derivative of the ESP32-C series, featuring an advanced RISC-V architecture with lower power consumption and better cost efficiency. Although its clock speed is slightly lower
(120MHz vs 240MHz), which is sufficient for most smart home and sensor applications while retaining the core dual-mode Wi-Fi + Bluetooth functionality—ideal for those seeking peak performance.
The top choice for value.
Q2: Which development environments does this module support?
Fully compatible with Espressif's official ESP-IDF framework, and supports mainstream open-source platforms like Arduino IDE and MicroPython. Rich community resources and comprehensive documentation available.
Complete, enabling engineers to start developing quickly.
Q3: What is the signal coverage range of PCB-mounted antennas?
A: In open environments, Wi-Fi transmission reaches 100 meters and Bluetooth reaches 50 meters. If your application involves metal shielding or special structural requirements, we recommend selecting...
External connection for ESP8684-MINI-1U models with IPEX interfaceAntenna。
Q4: Is 4MB Flash overkill for typical applications?
Not overkill. As IoT features grow more complex and firmware sizes increase, 4MB provides not only more room for current development but also critical headroom for future growth.
OTA feature updates and security patches to prevent upgrade failures due to insufficient storage after product launch.
Q5: Is the minimum system circuit of the module complex?
A: Very simple. Beyond essential power filtering capacitors and the reset circuit, almost no other external components are required. The datasheet includes a complete reference schematic.
Ready for mass production design.
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