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


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Manufacturer: Espressif Systems

Delivery: Ships within 8-12 weeks
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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. Designing solutions are easy and very cost effective using this chip. 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.

This chip has ultra-low-power and highly-integrated MCU-based SoC solution that supports 2.4 GHz Wi-Fi and Bluetooth® Low Energy (Bluetooth LE). 

Additional capabilities are the following.

  • Complete Wi-Fi subsystem that complies with IEEE 802.11b/g/n protocol
  • Supports Station mode, SoftAP mode, SoftAP + Station mode, and promiscuous mode
  • 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
  • Rich set of peripheral interfaces and GPIOs, ideal for various scenarios and complex applications

Reliable security features are ensured by the following.

  • 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

ESP32-C3 Chip Comparison Guide


  • 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

Documents and Drivers


ESP32-C3 Datasheet


Chip Package

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



Temperature Range

-40°C to +105°C (-40°F to +221°F)


2 × 54-bit general-purpose timer

Watchdog Timer


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