ESP32-C3-WROOM-02 and ESP32-C3-WROOM-02U are two general-purpose Wi-Fi and Bluetooth LE module. The rich set of peripherals and high performance make the two modules an ideal choice for smart homes, industrial automation, health care, consumer electronics, etc.
ESP32-C3-WROOM-02 and ESP32-C3-WROOM-02U both feature a 4 MB external SPI flash. ESP32-C3-WROOM-02 comes with a on-board PCB antenna. ESP32-C3-WROOM-02U comes with a connector for an external antenna. ESP32-C3-WROOM-02 and ESP32-C3-WROOM-02U have two variants:
• 85 °C version operating at –40 ~ 85 °C
• 105 °C version operating at –40 ~ 105 °C
The two variants only differ in ambient operating temperature. In this datasheet unless otherwise stated, ESP32-C3-WROOM-02 refers to the ESP32-C3-WROOM-02 module in 85 °C and 105 °C versions, and ESP32-C3-WROOM-02U refers to the ESP32-C3-WROOM-02U module in 85 °C and 105 °C versions.
At the core of the two modules is ESP32-C3*, which has a 32-bit RISC-V single-core processor. ESP32-C3 integrates a rich set of peripherals, ranging from UART, I2C, I2S, remote control peripheral, LED PWM controller, general DMA controller, TWAI® controller, USB Serial/JTAG controller, temperature sensor, and ADC. It also includes SPI, Dual SPI and Quad SPI interfaces.
Key Benefits
- 2.4 GHz Wi-Fi & Bluetooth® 5 (LE) module
- ESP32-C3 embedded, 32-bit RISC-V single-core processor, up to 160 MHz
- Bluetooth 5, Bluetooth mesh
- Support IEEE 802.11 b/g/n standards
- Wi-Fi Multimedia (WMM)
- 40 MHz crystal oscillator
- On-board PCB antenna (ESP32-C3-WROOM-02)
- External antenna via a connector (ESP32-C3-WROOM-02U)
- Operating ambient temperature –40 ~ 105 °C
- Green certification RoHS/REACH
