ESP32-C3-WROOM-02U-N4

Overview

The ESP32-C3-WROOM-02U-N4 is a compact, single-core RISC-V Wi-Fi and Bluetooth 5 (LE) module designed for cost-effective IoT applications. It features 4MB of embedded SPI flash and an U.FL connector for applications requiring an external antenna to optimize signal range or clear metal enclosures. The module operates at 160 MHz and provides a modern open-source architecture with a rich set of peripherals including SPI, I2C, and TWAI.

Why Choose This Part

This module provides a seamless migration path to the RISC-V architecture while maintaining compatibility with the well-established ESP-IDF ecosystem. Its 20.5dBm peak output power and -98dBm sensitivity ensure robust wireless performance, and the U.FL connector offers flexibility for external antenna placement in space-constrained designs.

Applications

Getting Started

Developers can use the Espressif IoT Development Framework (ESP-IDF) or the Arduino IDE with the ESP32 board manager installed. The module features an integrated USB Serial/JTAG controller, simplifying debugging and firmware flashing without requiring external USB-to-UART bridge ICs. For prototyping, the ESP32-C3-DevKitM-1 serves as an ideal hardware platform.

Dev Boards

Development boards and breakout modules featuring the ESP32-C3-WROOM-02U-N4 or compatible chips — ready to use for prototyping.

ESP32-C3-DEVKITC-02U Espressif Systems

The ESP32-C3-DEVKITC-02U transceiver evaluation board by Espressif Systems is a development tool designed for RF, RFID,

Digi-Key 123 in stock

ESP32-C3-DevKit-Lipo Olimex LTD

ESP32-C3 ESP32-C Bluetooth® 5.x (BLE) Transceiver 2.4GHz Evaluation Board

Digi-Key 108 in stock

ESP32-C3-DEVKITM-1-N4X Espressif Systems

Multiprotocol Development Tools ESP32-C3-DevKitM-1 is an entry-level development board equipped with ESP32-C3-MINI-1 or

Digi-Key Mouser 957 in stock

ESP32-C3-DevKitM-1 Espressif

Lower-cost Espressif dev kit with BLE and Wi-Fi capabilities if Wi-Fi 6 or 802.15.4 are not required.

Digi-Key 213 in stock

ESP32-C3-AWS-ExpressLink-DevKit Espressif Systems

Development Boards & Kits - Wireless The ESP32-C3-AWS-ExpressLink-DevKit is a development board that hosts Espressif s A

Mouser 72 in stock

ESP32-C3-WROOM Family

Comparing specs that differ across variants. The current part is highlighted.

Also Consider

ESP32-C3-WROOM-02-N4 Espressif Systems - Identical module but features an integrated PCB trace antenna for designs not requiring an external antenna connector.

ESP32-WROOM-32E-N4 Espressif Systems - Provides a dual-core Xtensa architecture with higher processing power and legacy Bluetooth Classic support if needed.