ESP8266
Ultra-Low Cost Wi-Fi Microcontroller with TCP/IP Stack
Product Overview
The ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
Ultra-Low Cost Solution
Complete Wi-Fi Networking
Proven in Millions of Devices
Simple Integration
Technical Specifications
Comprehensive technical details for ESP8266
Processing & Memory
| CPU | Tensilica L106 32-bit processor |
| CPU Frequency | 80 MHz, up to 160 MHz |
| SRAM | 160 KB |
| Flash | Up to 16 MB external flash |
| ROM | 64 KB boot ROM |
Wi-Fi Connectivity
| Wi-Fi Standard | 802.11 b/g/n (Wi-Fi 4) |
| Frequency | 2.4 GHz |
| Modes | Station, SoftAP, Station+SoftAP |
| Security | WPA/WPA2/WPA2-Enterprise/WPS |
| Range | 100+ meters (open space) |
Peripherals & Interfaces
| GPIO | 17 GPIO pins |
| ADC | 1 × 10-bit ADC |
| PWM | 4 × PWM outputs |
| SPI | 2 × SPI |
| I2C | 1 × I2C (software) |
| UART | 1.5 × UART |
Power & Operating Conditions
| Operating Voltage | 2.5V ~ 3.6V |
| Active Current | ~70 mA (average) |
| Deep Sleep | 20 μA |
| Operating Temperature | -40°C ~ +125°C |
| Package | QFN32 (5×5 mm) |
Key Features & Benefits
Why ESP8266 remains the popular choice for simple IoT projects
Ultra-Low Cost
The most cost-effective Wi-Fi solution in the market, making IoT accessible for high-volume applications and budget-conscious projects.
Simple Wi-Fi Integration
Complete Wi-Fi networking solution with TCP/IP stack, allowing easy integration into existing products with minimal changes.
Proven & Reliable
Used in millions of devices worldwide with extensive community support, proven reliability, and mature development ecosystem.
Target Applications
Perfect for applications requiring simple, cost-effective Wi-Fi connectivity
Smart Home Devices
Smart plugs, light switches, and simple home automation devices requiring basic Wi-Fi control.
Sensor Networks
Temperature, humidity, and environmental sensors with Wi-Fi data transmission capabilities.
Industrial Monitoring
Simple industrial sensors and monitoring devices for equipment status and data logging.
Wi-Fi Connectivity Add-on
Adding Wi-Fi capability to existing products as a low-cost connectivity module.
Development Resources
Tools and resources for ESP8266 development
Arduino IDE Support
Easy development with Arduino IDE and extensive library ecosystem for rapid prototyping.
Arduino GuideESP8266 SDK
Native ESP8266 SDK for advanced development with full control over hardware features.
SDK DocumentationDevelopment Boards
NodeMCU, Wemos D1, and other popular development boards for easy prototyping.
Board OptionsOrdering Information
Available ESP8266 variants and modules
| Part Number | Flash | Package Type | Features | Status |
|---|---|---|---|---|
| ESP8266EX | External | QFN32 | Base chip, requires external components | In Stock |
| ESP-WROOM-02 | 2MB/4MB | SMD Module | Integrated antenna, FCC certified | In Stock |
| ESP-12E/F | 4MB | SMD Module | Popular development module | In Stock |
| ESP-01 | 1MB | DIP Module | Compact breadboard-friendly | In Stock |
Ready to Start Your ESP8266 Project?
Contact our team for product selection guidance, competitive pricing, and technical support for your ESP8266 application.