ESP32-C3FH4X—Low-Power, High-Integration MCU System-on-Chip (SoC)

09/09/2025

The ESP32-C3FH4X, launched by Espressif, is a low-power, high-performance MCU SoC integrating Wi-Fi and Bluetooth Low Energy (BLE 5.0), ideal for IoT applications.

Key Features

Processor:

  • Single-core 32-bit RISC-V processor, up to 160 MHz

  • Supports 8-bit, 16-bit, and 32-bit instruction sets

Memory:

  • 400 KB SRAM (data and instructions)

  • 384 KB ROM (boot and core functions)

  • 4 MB embedded Flash (FH4X denotes 4 MB Flash)

  • 8 KB RTC SRAM (available in low-power mode)

Clock:

  • Internal 17.5 MHz oscillator (software calibratable)

  • Supports external 40 MHz crystal

  • Internal low-speed RTC oscillator (32 kHz or 136 kHz)

Wi-Fi:

  • Supports IEEE 802.11 b/g/n (2.4 GHz)

  • Data rate up to 150 Mbps

  • Station, SoftAP, and Station + SoftAP modes

  • 1T1R (1 transmit, 1 receive)

Bluetooth:

  • Bluetooth Low Energy (BLE) 5.0

  • Supports BLE Mesh

  • Data rate up to 2 Mbps

Operating Temperature: -40 to 105°C

Receiver Sensitivity:

  • Wi-Fi: -97 dBm (802.11b, 1 Mbps)

  • BLE: -94 dBm (1 Mbps)

Power Consumption:

  • Wi-Fi active: ~300 mA (transmitting)

  • Deep-sleep: 5 μA

  • Modem-sleep: 15 mA (Wi-Fi on, CPU running)

Application Areas

  • Smart home

  • Industrial automation

  • Healthcare

  • Consumer electronics

  • Smart agriculture

  • POS systems

  • Service robots

  • Audio devices

  • General low-power IoT sensor hubs

  • General low-power IoT data loggers

Tip:
The difference between ESP32-C3FH4 and ESP32-C3FH4X requires software tool updates. Contact our business team for operational guidance documents.

Pin Layout

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For more details on the ESP32-C3FH4X or other chips, contact us! Our professional team provides comprehensive technical support and solutions to ensure smooth project advancement.