The SPWF01SA.11 from STMicroelectronics is a Wi-Fi module with integrated antenna, 1.5MB of flash and Wi-Fi full stack. The intelligent Wi-Fi module represents a plug-and-play and standalone 802.11 b/g/n solution for easy integration of wireless internet connectivity features into existing or new products. Configured around a single-chip 802.11 transceiver with integrated PA and comprehensive power management subsystem and an STM32 microcontroller with an extensive GPIO suite, it also incorporates timing clocks and voltage regulators. It is integrated with full featured TCP/IP protocol stack with added web server and additional application service capabilities. For secure end to end communication with the cloud, an SSL/TLS stack is embedded in every module with no licensing charge. The SW package includes an AT command layer interface for user-friendly access to stack functionalities via the UART serial port. It is possible to upgrade module firmware via UART and Over The Air (FOTA).

• 2.4GHz IEEE 802.11 b/g/n transceiver, STM32 ARM Cortex-M3 with 64KB RAM
• WEP/WPA/WPA2 personal security
• System modes such as station, IBSS and miniAP, firmware update via UART and over the air (FOTA)
• TX power is 18.3dBm at 1Mbps DSSS, 13.7dBm at 54Mbps OFDM
• RX sensitivity is -96.0dBm at 1Mbps DSSS, -74.5dBm at 54Mbps OFDM
• 16 configurable GPIOs available, UART interface to host system, advanced low-power modes
• Simple AT command set host interface through UART
• Single voltage supply (3.3V typical), surface mount PCB module
• Industrial temperature range from -40°C to 85°C, FCC/CE/IC/SRRC certified
• Small form factor of 26.92mm x 15.24mm x 2.35mm