> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# ESP32-C3 WROOM Module - 4MB (PCB Antenna)

**Type:** Product page · **SKU:** WRL-18034 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/esp32-c3-wroom-module-4mb-pcb-antenna.html ([markdown](https://core-electronics.com.au/esp32-c3-wroom-module-4mb-pcb-antenna.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The Espressif ESP32-C3 is the next version of the popular ESP32 Bluetooth® and WiFi enabled module. This module features a single core, [RISC-V](https://riscv.org/)-based processor with WiFi and Bluetooth LE 5.0 radios built into the SoC. The module features a PCB antenna and castellated plated pins for surface-mount soldering. This variation has 4 MB of on-board SPI flash and is the 85 °C temperature tolerant version.

The 32-bit core RISC-V microcontroller features a maximum clock speed of 160 MHz. With 22 configurable GPIOs, 400 KB of internal RAM and low-power-mode support, it can facilitate many different use-cases involving connected devices. The high-temperature support makes it ideal for industrial and lighting use-cases as well. The module is supported through Espressif’s open-source ESP-IDF making it easy to develop around.

WiFi and Bluetooth LE 5.0 with long-range (LR) support help building devices with great coverage and improved usability. ESP32-C3 continues to support Bluetooth LE SIG Mesh and Espressif WiFi Mesh. Furthermore, the solid RF performance of ESP32-C3 is sustained at a higher operating temperature.

Security is now a main feature of the ESP32 line. The ESP32-C3 ensures that the availability of features, such as the RSA-3072-based secure boot and the AES-128-XTS-based flash encryption, can be used to build connected devices securely. The innovative digital signature peripheral and the HMAC peripheral provide a secure device identity for applications. Hardware acceleration support for cryptographic algorithms ensures good performance for the secure communication both in a local network and with the Cloud.

#### Specifications 

- **MCU**
    
    
    - ESP32-C3 embedded, 32-bit RISC-V single-coreprocessor, up to 160 MHz
    - 384 KB ROM
    - 400 KB SRAM (16 KB for cache)
    - 8 KB SRAM in RTC
- **WiFi**
    
    
    - IEEE 802.11 b/g/n-compliant
    - Center frequency range of operating channel:2412~2484 MHz
    - Supports 20 MHz, 40 MHz bandwidth in 2.4 GHzband
    - 1T1R mode with data rate up to 150 Mbps
    - Wi-Fi Multimedia (WMM)
    - TX/RX A-MPDU, TX/RX A-MSDU
    - Immediate Block ACK
    - Fragmentation and defragmentation
    - Transmit opportunity (TXOP)
    - Automatic Beacon monitoring (hardware TSF)
    - 4 × virtual Wi-Fi interfaces
    - Simultaneous support for Infrastructure BSS inStation mode, SoftAP mode, Station + SoftAPmode, and promiscuous modeNote that when ESP32-C3 family scans in Stationmode, the SoftAP channel will change along withthe Station channel.
    - Antenna diversity
    - 802.11mc FTM
- **Bluetooth**
    
    
    - Bluetooth LE: Bluetooth 5, Bluetooth mesh
    - Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
    - Advertising extensions
    - Multiple advertisement sets
    - Channel selection algorithm #2
- **Hardware**
    
    
    - Interfaces:
        - GPIO
        - SPI
        - UART
        - I2C
        - I2S
        - remotecontrol peripheral
        - LED PWM controller
        - general DMA controller
        - TWAI® controller (compatible withISO 11898-1)
        - temperature sensor
        - SAR ADC
    - 40 MHz crystal oscillator
    - 4 MB SPI flash
    - Operating voltage/Power supply: 3.0~3.6 VDC
    - Operating ambient temperature: –40~85 °C (This is the 85 °C version module)
    - Dimensions: (18.0 × 20.0 × 3.2) mm

**Resources**

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/esp32-c3-wroom-02_datasheet_en_90609088aba.pdf)
- [ESP32-C3 Technical Reference Manual](https://core-electronics.com.au/attachments/localcontent/esp32-c3_technical_reference_manual_en_92725243376.pdf)
- [ESP-IDF Programming guide](https://docs.espressif.com/projects/esp-idf/en/latest/esp32c3/get-started/index.html)
- [GitHub Repo](https://github.com/espressif)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_662.jpg)