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.

ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area.

FeaturesSDIO 2.0, SPI, UART32-pin QFN packageIntegrated RF switch, balun, 24dBm PA, DCXO, and PMUIntegrated RISC processor, on-chip memory and external memory interfacesIntegrated /baseband processorsQuality of Service managementI2S interface for high fidelity audio applicationsOn-chip low-dropout linear regulators for all internal suppliesProprietary spurious-free clock generation architectureIntegrated WEP, TKIP, AES, and WAPI engines

SolutionsSupports APSD for optimal VoIP applicationsPatented spurious noise cancellation algorithm for integration in SOC applicationsSupports Bluetooth co-existence interfaceSelf-calibrated RF to ensure optimal performance under all operating conditionsZero factory tuningNo external RF components

Specifications802.11 b/g/nWi-Fi Direct (P2P), soft-APIntegrated TCP/IP protocol stackIntegrated TR switch, balun, LNA, power amplifier and matching networkIntegrated PLLs, regulators, DCXO and power management units+19.5dBm output power in 802.11b modePower down leakage current of <10uAIntegrated low power 32-bit CPU could be used as application processorSDIO 1.1/2.0, SPI, UARTSTBC, 1×1 MIMO, 2×1 MIMOA-MPDU & A-MSDU aggregation & 0.4ms guard intervalWake up and transmit packets in < 2msStandby power consumption of < 1.0mW (DTIM3)Help your development more easy.ESP8266 Serial WIFI Module Communite Forum>> Detail about ESP82661. High quality & low price2. LWIP agreement3. Support 3 modes: AP, STA, AP+STA4. Perfect and simple AT commands