ESP32-C3-WROOM-02U
Overview
The ESP32-C3-WROOM-02U is a compact Wi-Fi and Bluetooth LE 5.0 module powered by a 32-bit RISC-V single-core processor. It features an external antenna connector (U.FL) for improved range and flexibility in metal-shielded or enclosure-constrained designs. With 4MB of flash and a core running up to 160MHz, it provides a cost-effective path for secure IoT connectivity.
Why Choose This Part
This module offers an external U.FL connector for optimized RF performance and a RISC-V core that balances performance with power efficiency. It provides 400kB of SRAM and 4MB of flash in a small 18mm x 14.3mm SMD package, making it suitable for space-constrained designs that require robust 2.4GHz wireless protocols.
Applications
Key Specifications
Getting Started
Development is primarily done using the Espressif IoT Development Framework (ESP-IDF) or the Arduino IDE. Engineers can prototype quickly using the ESP32-C3-DevKitM-1, and debugging is supported via the built-in JTAG and USB serial interface. Ensure a 3.0V to 3.6V power supply capable of handling peaks during RF transmission.
Dev Boards
Development boards and breakout modules featuring the ESP32-C3-WROOM-02U or compatible chips — ready to use for prototyping.
ESP32-C3 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Memory | Package | Interfaces | Frequency | Sensitivity | Antenna Type | Stock |
|---|---|---|---|---|---|---|---|
| ESP32-C3-WROOM-02U (this part) | 4MB | SMD-19 | ADC, GPIO, I2C, I2.. | 2.4GHz | -98dBm | Antenna Not Includ.. | 6,383 |
| ESP32-C3-WROOM-02U-N4 | 4MB | SMD-19 | ADC, GPIO, I2C, I2.. | 2.4GHz | -98dBm | Antenna Not Includ.. | 1,055 |
| ESP32-C3-WROOM-02-H4 | 4MB | SMD-32 | GPIO, I2C, I2S, SP.. | 2.4GHz | -105dBm | PCB Trace | 1,489 |
| ESP32-C3-DEVKITC-02U | — | — | — | 2.4GHz | — | — | 123 |
| ESP32-C3-DEVKITM-1-N4X | — | — | — | 2.4GHz | — | — | 934 |
| ESP32-C3-MINI-1 | 4MB | SMD-53 | ADC, GPIO, I2C, I2.. | 2.412GHz | -104dBm | PCB Trace | 3,117 |
| ESP32-C3-MINI-1U | 4MB | SMD-61 | ADC, GPIO, I2C, I2.. | 2.4GHz | -104dBm | Antenna Not Included | 3,117 |
| ESP32-C3-WROOM-02-N4 | 4MB | SMD-19 | GPIO, I2C, I2S, SP.. | 2.4GHz | -105dBm | PCB Trace | 2,289 |
| ESP32-C3-AWS-ExpressLink-DevKit | — | — | — | 2.4GHz | — | — | 2 |
| ESP32-C3-WROOM-02 | 4MB | SMD-19 | GPIO, I2C, I2S, SP.. | 2.4GHz | -105dBm | PCB Trace | 6,393 |
| ESP32-C3-LYRA | — | — | — | 2.4GHz | — | PCB Trace Antenna(.. | — |
Also Consider
Espressif Systems
- Identical RISC-V core and memory footprint but features an integrated PCB trace antenna for lower system cost.
