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 and it has a 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. Interface:SDIO 2.0, SPI, UART32-pin QFN packageIntegrated RF switch, balun, 24dBm PA, DCXO, and PMUIntegrated RISC processor, on-chip memory and external memory interfacesIntegrated MAC/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 Specification:802.11 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 units19.5dBm output power in 802.11b modePower down leakage current of Integrated 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 Standby power consumption of