Datasheet

1 Module Overview
02 comes with a PCB antenna. ESP32-C3-WROOM-02U comes with a U.FL connector for an external IPEX
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
ESP32-C3 4 MB
18.0 × 20.0 × 3.2
ESP32-C3-WROOM-02U 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 Family Datasheet .
1.3 Applications
• Smart Home
– Light control
– Smart button
– Smart plug
– Indoor positioning
• Industrial Automation
– Industrial robot
– Mesh network
– Human machine interface (HMI)
– Industrial field bus
• Health Care
– Health monitor
– Baby monitor
• Consumer Electronics
– Smart watch and bracelet
– Over-the-top (OTT) devices
– Wi-Fi and bluetooth speaker
– Logger toys and proximity sensing toys
• Smart Agriculture
– Smart greenhouse
– Smart irrigation
– Agriculture robot
• Retail and Catering
– POS machines
Espressif Systems 4
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ESP32-C3-WROOM-02 & WROOM-02U Datasheet v0.7