SPWF04 Wi-Fi Module

802.11bgn System on Module

The SPWF04SA and the SPWF04SC intelligent Wi-Fi modules represent a plug-and play and standalone 802.11 b/g/n solution for easy integration of wireless Internet connectivity features into existing or new connectivity products.

The SPWF04Sx parts are released with an integrated full featured TCP/IP protocol stack with added application service capabilities and an integrated micropython scripting engine to enable custom application development within the module. 1 MB of the internal Flash is dedicated to store the user file system while an HW interface is provided to allow the usage of an external memory to extend the file system storage capabilities with no size limit. For secure end-to-end communication with the cloud, an SSL/TLS stack is embedded in every module with no licensing charge.

Key Features:

2.4 GHz IEEE 802.11 b/g/n low power transceiver
High performance STM32F439
- ARM Cortex-M4 @ 180MHz
- 256KB SRAM and 1MBytes high speed Flash memory for user storage extendable via SD/MMC interface + Embedded Flash Bootloader with FOTA support
Integrated TCP/IP Stack protocol stack
- 8 Simultaneous TCP or UDP Socket clients, 2 Socket server (supporting up to 8 client each)
- 2 TLS/SSL Socket client supporting up to TLS 1.2
- Cryptographic acceleration: hardware acceleration for AES 128, 192, 256, Triple DES, HASH (MD5, SHA-1, SHA-2), HMAC and TRNG.
- Web Server supporting dynamic web pages
- RESTful API to get & post web content
Application subsystem
- Embedded real-time microPython environment for customer applications and on-board development
- microPhyton API library for easy access to Wi-Fi subsystem capabilities and device peripherals (i.e. UART, SD/MMC, SPI, I2C)
WPA2 Personal, WPA2 Enterprise Security and WPS push button for station
System Modes: Station, IBSS, and miniAP
UART/SPI interface to host system, 16 configurable GPIOs available
Small form factor: 26.92 x 15.24 x 2.35mm
Multiple antenna options:
- Integrated antenna (SPWF04SA.xy)
- Integrated U.FL connector (SPWF04SC.xy)
Industrial temperature range: –40°C to 85°C
FCC/CE/IC/SRRC certified