# ESP32-C3-WROOM-02-N4 Module (PCB antenna)

**Type:** Product page · **SKU:** DFR0810 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/esp32-c3-wroom-02-n4-module-pcb-antenna.html ([markdown](https://core-electronics.com.au/esp32-c3-wroom-02-n4-module-pcb-antenna.html.md))

ESP32-C3-WROOM-02 is a universal Wi-Fi and low-power Bluetooth LE module. The rich set of peripherals and small size make the two modules an ideal choice...

## Pricing

- **Price:** $8.40 (inc GST) — $7.64 AUD, exc GST
- **Quantity discounts:** 6+ $7.25 (exc GST) · 12+ $6.95 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## Description

**Introduction**ESP32-C3-WROOM-02 is a universal [Wi-Fi](https://www.dfrobot.com/category-80.html) and low-power Bluetooth LE module. The rich set of peripherals and small size make the two modules an ideal choice for smart homes, industrial automation, health care, consumer electronics, etc.

ESP32-C3-WROOM-02-N4 is equipped with ESP32-C3\* chip and equipped with 4 MB embedded flash, belonging to esp32-C3 series chip. ESP32-C3 series of chips have a 32-bit RISC-V single-core processor. They integrate 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.

**Pin Layout**

![ESP32-C3-WROOM-02-N4 Module (PCB antenna)](https://core-electronics.com.au/attachments/localcontent/1_6089782c7ec.png)

**Pin Description**

| **Name** | **No.** | **Type** | **Function** |
|---|---|---|---|
| 3V3 | 1 | P | Power supply |
| EN | 2 | I | High: on, enables the chip. |
| Low: off, the chip powers off. |
| Note: Do not leave the EN pin floating. |
| IO4 | 3 | I/O/T | GPIO4,ADC1\_CH4,FSPIHD,MTMS |
| IO5 | 4 | I/O/T | GPIO5,ADC2\_CH0,FSPIWP,MTDI |
| IO6 | 5 | I/O/T | GPIO6,FSPICLK,MTCK |
| IO7 | 6 | I/O/T | GPIO7,FSPID,MTDO |
| IO8 | 7 | I/O/T | GPIO8 |
| IO9 | 8 | I/O/T | GPIO9 |
| GND | 9,19 | P | Ground |
| IO10 | 10 | I/O/T | GPIO10,FSPICS0 |
| RXD | 11 | I/O/T | GPIO20,U0RXD |
| TXD | 12 | I/O/T | GPIO21,U0TXD |
| IO18 | 13 | I/O/T | GPIO18,USB\_D- |
| IO19 | 14 | I/O/T | GPIO19,USB\_D+ |
| IO3 | 15 | I/O/T | GPIO3,ADC1\_CH3 |
| IO2 | 16 | I/O/T | GPIO2,ADC1\_CH2,FSPIQ |
| IO1 | 17 | I/O/T | GPIO1,ADC1\_CH1,XTAL\_32K\_N |
| IO0 | 18 | I/O/T | GPIO0,ADC1\_CH0,XTAL\_32K\_P |

  **Specification**9. ESP32-C3 embedded, 32-bit RISC-V single-core processor, up to 160 MHz
10. 384 KB ROM
11. 400 KB SRAM
12. 8 KB RTC SRAM
13. 40 MHz crystal oscillator
14. 4 MB SPI flash
15. Operating Voltage/Power Supply: 3.0~3.6V
16. Operating Temperature Range: –40~85°C
  **Documents**18. [Datasheet](https://core-electronics.com.au/attachments/localcontent/esp32-c3-wroom-02_datasheet_en_90609088aba.pdf)
  **Parts List**20. ESP32-C3-WROOM-02-N4 Module(PCB antenna) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_1853.jpg)