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ESP8266 Serial-to-WiFi Bridge Module, UEXT Interface US$5.95

MOD-WIFI-ESP8266
ESP8266 Serial-to-WiFi Bridge Module, UEXT Interface


MOD-WIFI-ESP8266 is an add-on module featuring the ESP8266 WiFi SoC with a W25Q16B SPI Flash memory IC. It can connect to a host system via its UEXT connector. The board has a PCB trace antenna.

Solder jumpers allow you to do some I/O configuration (refer to the schematic for details).

UEXT Connector

The UEXT connector provides a solderless way to connect this module to a system with a microcontroller. There are dozens of microcontroller systems and development boards that can connect to this module via UEXT. Click on the architectures below for lists of compatible boards:

Espressif ESP8266 Features

The ESP8266 is very highly integrated SoC that includes an Xtensa LX106 core processor, RAM, and RF front-end allowing a WiFi TCP/IP stack to be implemented on board with just a few components. Since it found its way to the English-speaking world in the fall of 2014 it has attracted a lot of attention. Its features include:
  • 802.11 b/g/n
  • Wi-Fi Direct (P2P), soft-AP
  • Integrated TCP/IP protocol stack
  • Integrated RF switch, balun, LNA, 24dBm 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 less than 10ľA
  • 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 less than 2ms
  • Standby power consumption of less than 1.0mW (DTIM3)
  • 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

ESP8266 Development Board Resources

Note: Because this module is designed for inclusion in a larger device, it does not have FCC or CE certification of its own.


This product was added to our catalog on Friday 05 December, 2014.

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