ESP32-C3 WROOM Module - 4MB (PCB Antenna)

£3.80 £3.17

The Espressif ESP32-C3 is the next version of the popular ESP32 Bluetooth® and WiFi enabled module. This module features a single core, RISC-V-based processor with WiFi and Bluetooth LE 5.0 radios built into the SoC. The module features a PCB antenna and castellated plated pins for surface-mount soldering. This variation has 4 MB of on-board SPI flash and is the 85 °C temperature tolerant version.

The 32-bit core RISC-V microcontroller features a maximum clock speed of 160 MHz. With 22 configurable GPIOs, 400 KB of internal RAM and low-power-mode support, it can facilitate many different use-cases involving connected devices. The high-temperature support makes it ideal for industrial and lighting use-cases as well. The module is supported through Espressif’s open-source ESP-IDF making it easy to develop around.

WiFi and Bluetooth LE 5.0 with long-range (LR) support help building devices with great coverage and improved usability. ESP32-C3 continues to support Bluetooth LE SIG Mesh and Espressif WiFi Mesh. Furthermore, the solid RF performance of ESP32-C3 is sustained at a higher operating temperature.

Security is now a main feature of the ESP32 line. The ESP32-C3 ensures that the availability of features, such as the RSA-3072-based secure boot and the AES-128-XTS-based flash encryption, can be used to build connected devices securely. The innovative digital signature peripheral and the HMAC peripheral provide a secure device identity for applications. Hardware acceleration support for cryptographic algorithms ensures good performance for the secure communication both in a local network and with the Cloud.


  • MCU

    • ESP32-C3 embedded, 32-bit RISC-V single-coreprocessor, up to 160 MHz
    • 384 KB ROM
    • 400 KB SRAM (16 KB for cache)
    • 8 KB SRAM in RTC
  • WiFi

    • IEEE 802.11 b/g/n-compliant
    • Center frequency range of operating channel:2412~2484 MHz
    • Supports 20 MHz, 40 MHz bandwidth in 2.4 GHzband
    • 1T1R mode with data rate up to 150 Mbps
    • Wi-Fi Multimedia (WMM)
    • Immediate Block ACK
    • Fragmentation and defragmentation
    • Transmit opportunity (TXOP)
    • Automatic Beacon monitoring (hardware TSF)
    • 4 × virtual Wi-Fi interfaces
    • Simultaneous support for Infrastructure BSS inStation mode, SoftAP mode, Station + SoftAPmode, and promiscuous modeNote that when ESP32-C3 family scans in Stationmode, the SoftAP channel will change along withthe Station channel.
    • Antenna diversity
    • 802.11mc FTM
  • Bluetooth

    • Bluetooth LE: Bluetooth 5, Bluetooth mesh
    • Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
    • Advertising extensions
    • Multiple advertisement sets
    • Channel selection algorithm #2
  • Hardware

    • Interfaces:
      • GPIO
      • SPI
      • UART
      • I2C
      • I2S
      • remotecontrol peripheral
      • LED PWM controller
      • general DMA controller
      • TWAI® controller (compatible withISO 11898-1)
      • temperature sensor
      • SAR ADC
    • 40 MHz crystal oscillator
    • 4 MB SPI flash
    • Operating voltage/Power supply: 3.0~3.6 VDC
    • Operating ambient temperature: –40~85 °C (This is the 85 °C version module)
    • Dimensions: (18.0 × 20.0 × 3.2) mm


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