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

• ARM7, ARM9, ARM Cortex
• AVR, Arduino
• MSP430, CC430
• PIC18, PIC32, Pinguino
• TMS320

Espressif ESP8266 Features

• 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 10µA
• 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

• MOD-WIFI-ESP8266 Schematic
• MOD-WIFI-ESP8266 Design Files for Eagle
• ESP8266 Documentation (refers specifically to a reference design)
• Espressif Systems ESP8266 Datasheet
• ESP8266 Community Forum
• ESP8266 Community Wiki
• Espressif Forum with software and SDK downloads, AT command set, etc.
• Espressif GitHub Page (may not be as up to date as the forum)

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