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ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz
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ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz

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ESP32-C3-WROOM-02-H4 module, RISC-V 32-bit single-core processor @160MHz, 4MB Flash. Supports 2.4GHz Wi-Fi and BLE 5.0. Onboard PCB antenna. Low power design. Ideal for IoT devices, smart home, sensor networks, LED control


ESP32-C3-WROOM-02-H4 Module Application features:

◆ Module Model
ESP32-C3-WROOM-02-H4

◆ Core
RISC-V 32-bit single-core processor

◆ Clock Speed
Up to 160MHz

◆ Memory

Flash: 4MB (H4 version)

SRAM: 400KB

◆ Wireless Connectivity

Wi-Fi: 2.4GHz (802.11 b/g/n)

Bluetooth: BLE 5.0

◆ Antenna
Onboard PCB antenna

◆ Interfaces & Peripherals

22 GPIO pins

SPI / I2C / I2S / UART / ADC / PWM

Temperature sensor

Hardware encryption accelerator

Watchdog timer

◆ Security Features

Secure boot

Flash encryption

Hardware random number generator

◆ Development Environments

Arduino IDE

ESP-IDF

MicroPython

PlatformIO

ESP32-C3-WROOM-02-H4 Module Typical Applications

IoT sensor nodes

Smart home devices

Bluetooth beacons

LED strip control

Industrial automation

Low power portable devices

ESP32-C3-WROOM-02-H4 Module  Key Advantages

Original genuine ESP32-C3 chip

RISC-V open source architecture

Low power (5μA in deep sleep)

2.4GHz Wi-Fi + BLE 5.0

Strong security (hardware encryption)

High cost-performance ratio


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ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHzESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz ESP32-C3-WROOM-02-H4 Module Dual Core WiFi RISC-V Original 2.4GHz

FAQ

1. What is ESP32-C3-WROOM-02-H4?
The ESP32-C3-WROOM-02-H4 is a general-purpose Wi-Fi + Bluetooth® LE module from Espressif. It is built around the ESP32-C3 chip, featuring a 32-bit RISC-V single-core processor running at up to 160 MHz. The module comes in an SMD package, measuring 18mm × 20mm × 3.2mm.

2. What are the key specifications of ESP32-C3-WROOM-02-H4?
Key specifications include:

  • Processor: 32-bit RISC-V single-core, up to 160 MHz

  • Memory: 4MB Flash, 400KB SRAM, 384KB ROM

  • Wireless: 2.4GHz Wi-Fi (802.11 b/g/n) + Bluetooth 5.0 (LE)

  • Output Power: 20.5dBm

  • Receive Sensitivity: -105dBm

  • Data Rate: Up to 150Mbps

  • Supply Voltage: 3V ~ 3.6V

3. What package does ESP32-C3-WROOM-02-H4 use?
It uses a 32-SMD module package, measuring 18mm × 20mm × 3.2mm. Moisture Sensitivity Level is MSL 3 (168 hours).

4. What applications is ESP32-C3-WROOM-02-H4 suitable for?
This module is widely used in smart home, industrial automation, healthcare, and consumer electronics. Common applications include smart lighting, sensor networks, smart locks, environmental monitoring, and wearable devices.

5. What development tools support ESP32-C3-WROOM-02-H4?
Development can be done using Espressif's official ESP-IDF (IoT Development Framework). ESP-IDF is the official development framework for ESP32-C3 series chips, supporting Windows, Linux, and macOS platforms. The module is also supported by Arduino IDE and MicroPython.

6. What is the operating temperature range of ESP32-C3-WROOM-02-H4?
The operating temperature range is -40°C to +105°C (ambient temperature TA). Compared to the standard temperature version (-40°C to +85°C), the H4 version extends the high-temperature range, making it suitable for more demanding high-temperature environments.

7. What is the memory capacity of ESP32-C3-WROOM-02-H4?
4MB SPI Flash + 400KB SRAM + 384KB ROM. The 400KB SRAM includes 16KB for cache. The Flash is external SPI Flash.

8. What antenna type does ESP32-C3-WROOM-02-H4 use?
It uses an on-board PCB antenna (PCB trace antenna). For external antenna requirements, the ESP32-C3-WROOM-02U variant (with an external antenna connector) is available in the same series.

9. What peripheral interfaces does ESP32-C3-WROOM-02-H4 support?
It supports a rich set of serial interfaces, including GPIO, I2C, I2S, SPI, JTAG, UART, USB. It features 15 GPIO pins.

10. What is the difference between ESP32-C3-WROOM-02-H4 and ESP32-C3-WROOM-02-N4?
The main difference lies in the operating temperature range:

  • ESP32-C3-WROOM-02-N4: -40°C to +85°C (standard temperature version)

  • ESP32-C3-WROOM-02-H4: -40°C to +105°C (high-temperature extended version)

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ESP32-C3-WROOM-02-H
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