Item specifics
Description
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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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)
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)