ESP32-C3FH4X

RF Transceiver ICS Overview

The ESP32-C3FH4X is a low-power, highly integrated MCU-based system-on-chip (SoC) from Espressif Systems. It features a RISC-V single-core processor operating at up to 160 MHz and supports 2.4 GHz Wi-Fi (802.11b/g/n) and Bluetooth Low Energy (BLE). The device integrates 384 kB ROM, 408 kB SRAM, and supports external flash up to 4 MB. Key electrical parameters include a supply voltage range of 2.3 V to 3.6 V, maximum transmit power of 20 dBm, and receiver sensitivity of -97 dBm. Data rates reach 150 Mbps with 20 MHz or 40 MHz channel bandwidths in 1T1R mode.

RF Transceiver ICS Feature Summary

• Integrates a RISC-V 32-bit single-core processor for efficient control processing
• Supports simultaneous 2.4 GHz Wi-Fi and Bluetooth Low Energy connectivity
• Includes hardware acceleration for Wi-Fi protocols including WMM and frame aggregation
• Offers multiple serial interfaces including SPI, I2C, UART, and USB

RF Transceiver ICS Applications

• Smart home IoT devices requiring Wi-Fi and BLE connectivity
• Wearable electronics with strict power consumption constraints
• Industrial sensor nodes utilizing serial communication interfaces
• Low-cost wireless microcontroller modules for consumer electronics

RF Transceiver ICS Procurement Notes

Verify the specific package variant and storage configuration when ordering, as the ESP32-C3 series includes various sub-models with different memory capacities and pin configurations. Confirm that the selected component matches the required interface standards and operating temperature range for the target application environment. Ensure compliance with RoHS3 specifications if mandated by regional regulations. Cross-reference the manufacturer's latest datasheet to confirm current production status and any recent design changes or PCNs affecting the part number.

RF Transceiver ICS Selection Notes

Select this component for applications requiring integrated dual-mode wireless connectivity within a compact QFN-32 footprint. Consider the 160 MHz clock speed and available GPIO count for complex peripheral management. Evaluate the power consumption profiles during transmission and reception against battery life requirements. Ensure the host system can support the necessary voltage regulation within the 2.3 V to 3.6 V range. Verify that the antenna design accommodates the 2.4 GHz frequency band without interference.

RF Transceiver ICS Part Context

The ESP32-C3FH4X belongs to the ESP32-C3 family, which focuses on cost-effective and energy-efficient wireless solutions. It utilizes the RISC-V architecture, distinguishing it from previous Xtensa-based models in the ESP32 lineup. This series is designed to replace older generation chips in IoT deployments where lower power and smaller form factors are critical. The FH4X designation indicates specific internal memory and RF characteristics within the broader C3 product line.

RF Transceiver ICS Replacement Considerations

Direct substitutes within the same family include the ESP32-C3FH4, which shares similar core specifications but may differ in specific memory configurations or packaging details. Users should verify compatibility with existing PCB layouts and firmware libraries when switching between these variants. No other cross-family replacements are officially confirmed in the provided documentation.