ESP32-C3FH4X in ESP32 Family
The ESP32-C3FH4X is a cost-optimized, low-power microcontroller sub-family produced by Espressif Systems. Built on a single-core 32-bit RISC-V architecture, it integrates 2.4 GHz Wi-Fi and Bluetooth 5 (LE) connectivity. It is designed as a secure, pin-compatible alternative to the ESP8266, featuring 400 KB of SRAM and 4 MB of integrated flash memory. These SoCs are widely used in IoT applications where a balance of processing power, wireless connectivity, and hardware-level security is essential.
Variants in This Sub-Family
The ESP32-C3FH4X variants are primarily defined by their SiP (System-in-Package) configuration. While the core RISC-V architecture remains constant across the series, specific variants may differ in package dimensions (such as QFN24 vs QFN32) and operating temperature ratings ranging from standard to industrial grades. The 'H4' designation specifically denotes the inclusion of 4 MB internal flash memory, distinguishing it from variants requiring external SPI flash.
