The ESP32-C3-WROOM-02 and ESP32-C3-WROOM-02U are general-purpose Wi-Fi and low-power Bluetooth LE modules with powerful peripheral interfaces for smart home, industrial automation, healthcare, consumer electronics, etc. The ESP32-C3-WROOM-02 and ESP32-C3-WROOM-02U modules are equipped with external SPI flash. Both ESP32-C3-WROOM-02 and ESP32-C3-WROOM-02U modules are configured with external SPI flash, ESP32-C3-WROOM-02 with PCB on-board antenna, and ESP32-C3-WROOM-02U with connector to connect to external antenna. ESP32-C3-WROOM-02U are available in -40 ∼ 85 °C and -40 ∼ 105 °C variants, both using the ESP32-C3 chip. The ESP32-C3 chip is powered by a RISC-V 32-bit single-core processor. The ESP32-C3 integrates a wide range of peripherals including UART, I2C, I2S, remote control peripheral, LED PWM controller, general-purpose DMA controller, TWAI® controller, USB serial/JTAG controller, temperature sensor, and analogue/transmitter. controllers, temperature sensors, and analogue/digital converters, as well as single-, dual-, and quad-wire SPI interfaces.
