ESP32-C3FH4X
Overview
The ESP32-C3FH4X is a single-core, 32-bit RISC-V based microcontroller designed to provide a cost-effective path for secure 2.4 GHz Wi-Fi and Bluetooth 5 (LE) connectivity. It features 4MB of integrated flash and a robust hardware security suite including cryptographic acceleration and secure boot within a compact 32-VFQFN package. This SoC is optimized for low-power IoT applications that require a balance of processing power, wireless range, and data protection.
Why Choose This Part
The integration of 4MB flash directly into the 5x5mm package reduces PCB footprint and simplifies high-frequency layout requirements. Its RISC-V architecture provides a modern open-standard pipeline with FPU and DSP instructions for efficient edge processing. Engineers benefit from a high sensitivity of -97dBm and built-in antenna diversity support for reliable wireless performance in congested environments.
Applications
Key Specifications
Getting Started
Development is primarily supported through the Espressif IoT Development Framework (ESP-IDF) or the Arduino Core for ESP32. Hardware prototyping can be accelerated using the ESP32-C3-DevKitM-1, while firmware can be flashed and debugged via the built-in USB Serial/JTAG interface. The SoC supports JTAG for standard debugging and offers comprehensive documentation for its cryptographic hardware peripherals.
Dev Boards
Development boards and breakout modules featuring the ESP32-C3FH4X or compatible chips — ready to use for prototyping.
ESP32-C3 Family
| Part Number | Difference | Stock |
|---|---|---|
| ESP32-C3FH4 | ext. antenna | 9,153 |



