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ESP32-C3FH4X

ESP32-C3FH4X

Espressif Systems
RF System on a Chip - SoC ESP32-C3FH4X is an low-power and highly-integrated MCU-based solution that supports 2.4 GHz Wi-Fi and Bluetooth Low Energy (Bluetooth LE)
Active3,191 in stock

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

Smart Home Nodes
Ideal for Wi-Fi connected light switches, plugs, and environmental sensors using its integrated 20dBm RF output.
Secure IoT Gateways
Utilizes hardware-accelerated AES-128/256 and RSA for encrypted communication in sensitive commercial environments.
Industrial Sensor Bridges
Supports TWAI (CAN 2.0) and SPI interfaces to bridge industrial fieldbus data to cloud platforms via Wi-Fi.
Battery-Powered Wearables
Leverages a 5uA deep-sleep current and Bluetooth LE 5.0 for long-lasting connected consumer devices.

Key Specifications

GPIO 22
Type TxRx + MCU
Protocol 802.11b/g/n, Bluetooth v5.0
Memory Size 384kB ROM, 408kB SRAM
Sensitivity -97dBm
Mounting Type Surface Mount
Package / Case 32-VFQFN Exposed Pad
Power - Output 20dBm
Data Rate (Max) 150Mbps
Voltage - Supply 2.3V ~ 3.6V
Serial Interfaces ADC, GPIO, I2C, I2S, PWM, SDIO, SPI, TWAI, UART
RF Family/Standard Bluetooth, WiFi
Current - Receiving 84mA ~ 87mA
Operating Temperature -40degC ~ 105degC (TA)
Current - Transmitting 276mA ~ 335mA
Supplier Device Package 32-QFN (5x5)

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-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 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 934 in stock
The ESP32-C3-AWS-EXPRESSLINK-DEVKIT evaluation board from Espressif Systems is designed for a wide range of RF, RFID, a
Digi-Key Mouser 2 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
Part of Espressif ESP32 SoCs family » ESP32-C3

ESP32-C3 Family

Part NumberDifferenceStock
ESP32-C3FH4 ext. antenna 9,153

Also Consider

ESP32-S3-WROOM-1 Espressif Systems - Choose this for more demanding applications requiring dual-core performance and additional GPIO pins for complex peripherals.
ESP32-C3-WROOM-02 Espressif Systems - A pre-certified module version of the C3 for faster time-to-market without requiring custom RF circuit design.
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