ESP32-C3 - Single Core WI-FI & Bluetooth 5 (LE) Microcontroller Chip


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Manufacturer: Espressif Systems

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Product Information

Product Description

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The ESP32-C3 SOC is the next generation replacement for the ESP8266EX SOC. Simple to design with, this chip is a very cost effective solution. The ESP32-C3 adds advanced security and BLE 5.0 with long range support, while maintaining the low cost of the original ESP8266. Based on a single RISC-V core, performance has improved and cost remains under $1.00.

ESP32-C3 family is an ultra-low-power and highly-integrated MCU-based SoC solution that supports 2.4 GHz Wi-Fi and Bluetooth® Low Energy (Bluetooth LE). It has:

  • A complete Wi-Fi subsystem that complies with IEEE 802.11b/g/n protocol and supports Station mode, SoftAP mode, SoftAP + Station mode, and promiscuous mode
  • A Bluetooth LE subsystem that supports features of Bluetooth 5 and Bluetooth mesh
  • State-of-the-art power and RF performance
  • 32-bit RISC-V single-core processor with a four-stage pipeline that operates at up to 160MHz
  • 400 KB of SRAM (16 KB for cache) and 384 KB of ROM on the chip, and SPI, Dual SPI, Quad SPI, and QPI interfaces that allow connection to external flash
  • Reliable security features ensured by
    – Cryptographic hardware accelerators that support AES-128/256, Hash, RSA, HMAC, digital signature and secure boot
    – Random number generator
    – Permission control on accessing internal memory, external memory, and peripherals
    – External memory encryption and decryption
  • Rich set of peripheral interfaces and GPIOs, ideal for various scenarios and complex applications
  • Features

    Features of ESP32-C3

    • SMD IC ESP32-C3
    • RISC-V single-core MCU
    • 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
    • –40 ∼ 105˚C

    Documents and Drivers


    ESP-C3 Datasheet View (PDF)



    QFN32 (5*5)


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


    SPI, Duel SPI, Quad SPI, QPI, UART, I2C, I2S, 12-bit SAR ADCs, virtual Wi-Fi interfaces


    384 KB of ROM, 400 KB of on­chip SRAM, RTC memory: 8 KB of SRAM, 4 Kbit of eFuse




    Related chips and modules


    –40°C ∼ 105°C


    2 × 54-bit general-purpose timer


    3 × watchdog timers

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