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ESP32-C3 – The new RISC-V Combo WiFi + BT

The ESP32-C3 is the new RISC-V combo WiFi+BT secure module by Espressif.

Security is now required in the IoT, but many applications are simple and they don’t need dual core MCUs. The previous ESP32 was already a security-focused device and this trend has been reinforced with the ESP32-S2 WiFi-only module, but so far no single-core combo modules were available from Espressif.

The ESP32-C3 fills the gap between the widely successful but unsecure ESP8266 and the high-end dual core ESP32. This new module is aimed at simple and secure IoT applications where cost is a main driver. The open RISC-V architecture and the BLE5 with long-range and coded PHY support makes the ESP32-C3 one of the most promising combo modules on the market.

The ESP32-C3 is available as a certified module with PCB antenna – ESP32-C3-MINI-1 and ESP32-C3-WROOM – and evaluation boards are available for both modules.

Are you thinking about an IoT project? Contact us: Our FAE team is always ready to support and help you select the best solutions.


  • WiFi (IEEE 802.11 b/g/n-compliant)
  • BLE 5 (mesh, Long range, PHY w/ 2Mbps support)
  • 32 bit RISC-V
    • Single core, up to 160MHz
  • Security
    • Flash encryption
    • Secure boot
    • Hardware cryptographic accelerators
  • Wide set of peripherals
    • 12 bit SAR ADC, temperature sensor
    • I2C, SPI, UART, TWAI, I2S
    • PWM 6 channel
    • DMA



  • General IoT applications
    • Home automation, voice controlled
    • Sensors
    • Thermostats
  • Bluetooth/WiFi medical equipment
    • Baby monitor, Health monitor
  • Wearable
    • Smart watch, fitness trackers
  • Smart agriculture


  • Combo WiFi+BLE5 with long range and mesh support
  • Extremely competitive price
  • Wide open source resources and documentation


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