This is WiFi serial transceiver module, based on ESP8266 SoC.

 

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.

 

    SDIO 2.0, SPI, UART

    32-pin QFN package

    Integrated RF switch, balun, 24dBm PA, DCXO, and PMU

    Integrated RISC processor, on-chip memory and external memory interfaces

    Integrated MAC/baseband processors

    Quality of Service management

    I2S interface for high fidelity audio applications

    On-chip low-dropout linear regulators for all internal supplies

    Proprietary spurious-free clock generation architecture

    Integrated WEP, TKIP, AES, and WAPI engines

 

    802.11 b/g/n

    Wi-Fi Direct (P2P), soft-AP

    Integrated TCP/IP protocol stack

    Integrated TR switch, balun, LNA, power amplifier and matching network

    Integrated PLLs, regulators, DCXO and power management units

    +19.5dBm output power in 802.11b mode

    Power down leakage current of <10uA

    Integrated low power 32-bit CPU could be used as application processor

    SDIO 1.1/2.0, SPI, UART

    STBC, 1×1 MIMO, 2×1 MIMO

    A-MPDU & A-MSDU aggregation & 0.4ms guard interval

    Wake up and transmit packets in < 2ms

    Standby power consumption of < 1.0mW (DTIM3)