Espressif ESP8684 WROOM 02C H4 ESP32 C2 Module
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Espressif ESP8684 WROOM 02C H4 ESP32 C2 Module
The ESP8684-WROOM-02C is a general-purpose Wi-Fi and Bluetooth Low Energy (Bluetooth LE) module, featuring powerful functionality and a variety of peripheral interfaces. It is suitable for applications in smart homes, industrial automation, healthcare, consumer electronics, and more. The ESP8684-WROOM-02C uses a PCB onboard antenna.
Features
CPU and On-Chip Memory
- Integrated ESP8684H2 or ESP8684H4 chip with a RISC-V 32-bit single-core microprocessor, up to 120 MHz clock speed
- 576 KB ROM
- 272 KB SRAM (16 KB reserved for cache)
- Built-in flash (refer to Tables 1 and 2 for details)
- Flash controller with a cache mechanism
- Supports in-circuit programming (ICP) for flash
Wi-Fi
- Supports 802.11 b/g/n
- Operating channel center frequency range: 2412 ~ 2484 MHz
- 20 MHz bandwidth support in the 2.4 GHz band
- 1T1R mode with data rates up to 72.2 Mbps
- Wireless Multimedia (WMM)
- Frame aggregation (TX/RX A-MPDU, TX/RX A-MSDU)
- Immediate Block ACK
- Fragmentation and defragmentation
- Transmit opportunity (TXOP)
- Beacon auto-detection (hardware TSF)
- 3 virtual Wi-Fi interfaces
- Supports infrastructure network (Infrastructure BSS) with Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode
Note: In Station mode, when scanning, the SoftAP channel will change simultaneously.
Bluetooth®
- Bluetooth Low Energy (Bluetooth LE): Certified to Bluetooth 5.3
- High power mode (20 dBm)
- Supports data rates of 125 kbps, 500 kbps, 1 Mbps, and 2 Mbps
- Advertising Extensions
- Multiple Advertisement Sets
- Channel Selection Algorithm #2
- Wi-Fi and Bluetooth coexist using a shared antenna
Peripherals
- GPIO, SPI, UART, I2C, LED PWM controller, general DMA controller, temperature sensor, SAR analog-to-digital converter, timers, and watchdog
Module Integrated Components
- 26 MHz integrated crystal oscillator
Antenna Options
- Onboard PCB antenna (ESP8684-WROOM-02C)
- Connector for external antenna (ESP8684-WROOM-02UC)
Operating Conditions
- Operating voltage/power supply voltage: 3.0 ~ 3.6 V
- Operating temperature: –40 ~ 105 °C
Certifications
- Environmental Certifications: RoHS/REACH
Testing
- HTOL/HTSL/uHAST/TCT/ESD/Latch-up
Effective Date: March 27, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
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- Return for Refund: Within 15 days of receipt (unopened).
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- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
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