ESP32-C3FH4 - High Temperature 4MB Flash Wi-Fi BLE Microcontroller Chip


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Manufacturer: Espressif Systems

Delivery: Ships within 8 to 12 weeks
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Product Information

Product Description

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The ESP32-C3FH4 SOC is the high temperature, 4 MB flash version of the next generation replacement for the ESP8266EX SOC. This cost effective solution adds advanced security and BLE 5.0 with long range support, while maintaining the low cost of the original ESP8266.

Using the RISC-V core in the ESP32-C3FH4 allows for improved performance while providing the ability to match the low cost of the original ESP8266E.

Updated security features, USB 2.0, power management and BLE5.0 are some of the features available in the ESP32-C3FH4. The ESP-C3 family of modules provides the lowest cost, fully certified solution, of all the Espressif modules.

Trouble shooting is improved with on-chip debug module (DM), compliant with RISC-V debug specification v0.13. Also, an external debugger is supported using the industry-standard JTAG/USB port. The debugger provides direct system bus access (SBA) to memory and peripherals along with up to 8 trigger breakpoints/watchpoints.

ESP32-C3 Chip Comparison Guide


  • SMD IC ESP32-C3
  • RISC-V single-core MCU
  • 4 MB flash inside, 384 KB ROM, 400 KB SRAM (16 KB for cache), 8 KB SRAM in RTC
  • 2.4G Wi-Fi & BLE 5.0 combo
  • QFN 32-pin
  • 5*5 mm

Documents and Drivers


ESP32-C3FH4 Datasheet



LED PWM, Full Speed USB Serial/JTAG, General DMA, TWAI®


  • 4MB Flash
  • 384 KB of ROM
  • 400 KB of on­chip SRAM
  • RTC memory: 8 KB of SRAM
  • 4 Kbit of eFuse



Temperature Range

-40°C to +105°C (-40°F to +221°F)


2 × 54-bit general-purpose timer

Watchdog Timer


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