Datasheet

1 Module Overview
– 85 °C version module: –40 ~ 85 °C
– 105 °C version module: –40 ~ 105 °C
Certification
• RF certification: FCC/CE/SRRC
• Green certification: RoHS/REACH
Test
• HTOL/HTSL/uHAST/TCT/ESD/Latch-up
1.2 Description
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.
The ordering information for the two modules is as follows:
Table 1: Ordering Information
Module Chip embedded Flash Module dimensions (mm)
ESP32-C3-WROOM-02 (ANT)
ESP32-C3 4 MB
18.0 × 20.0 × 3.2
ESP32-C3-WROOM-02U (CONN) 18.0 × 14.3 × 3.2
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.
Note:
* For more information on ESP32-C3, please refer to ESP32-C3 Series Datasheet.
Espressif Systems 3
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ESP32-C3-WROOM-02 & WROOM-02U Datasheet v1.0