STMicroelectronics SPWF04Sx WiFi module

The SPWF04SA and the SPWF04SC are ready-to-use Wi-Fi modules conceived for Internet of Things (IoT) applications.The modules integrate a Cortex-M4-based STM32 microcontroller and a powerful Wi-Fi transceiver, compliant with IEEE 802.11 b/g/n standard for the 2.4 GHz band.The modules are cloud compatible thanks to the complete protocol package, which includes application and security layers. They can operate in serial-to-Wi-Fi and standalone mode, with customer applications developed in the subsystem based on the MicroPython environment.

Key features

• 2.4 GHz IEEE 802.11 b/g/n low power transceiver
• STM32 Cortex®-M4 with 2 MB Integrated Flash memory
• Security: WPS, WEP, WPA2, WPA-Enterprise
• Over The Air firmware update

Additional features

• 2.4 GHz IEEE 802.11 b/g/n low power transceiver
• STM32 Cortex®-M4 with 2 MB Integrated Flash memory
• Certified RF (FCC, IC, CE)
• UART/SPI-to-WiFi or standalone supported with MicroPython script language
• TLS for End-to-End security integrated in all modules
• Security: WPS, WEP, WPA2, WPA-Enterprise
• HTTPS, MQTT, SMTP, WebSockets, IPv6 protocols and to easily connect applications to the cloud
• Over The Air firmware update
• System Modes: mini-AP mode,  IBSS and Station
• Size: 26.92 x 15.24 x 2.35 mm
• Advanced low-power modes
• Standby with RTC: 43 µA
• Sleep = 3 mA
• Idle connected (DTIM=1) = 5 mA
• RX traffic 105 mA typical
• TX traffic 260 mA typical @ 10 dBm
• Single voltage supply (3.3 V typical)
• Industrial temperature range: -40° C to 85° C

Applications

• Smart appliances
• Industrial control and data acquisition
• Home automation and security systems
• Wireless sensors
• Cable replacement
• Medical equipment
• Machine-to-machine communication