Serial-to-Wi-Fi Modules

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  • The SPWF01SA and the SPWF01SC 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 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, the modules also incorporate timing clocks and voltage regulators. Two different options exist based on the integrated Flash memory. The SPWF01Sx.1y orderable parts integrate 1.5 MB of Flash, while the SPWF01Sx.2y orderable parts integrate 512 kB of Flash.
    The module is available either configured with an embedded micro 2.45 GHz highly-efficient ISM band antenna (SPWF01SA), or with an u.fl connector for external antenna connection (SPWF01SC).
    With low power consumption and ultra-compact (2.7 x 1.5 cm) footprint, the modules are ideal for fixed and mobile wireless applications, as well as challenging battery-operated applications.
    The SPWF01Sx parts are released with an integrated full featured TCP/IP protocol stack with added web server and additional application service capabilities, such as REST API for accessing files on servers in the cloud and support for dynamic web pages with CGI/SSI functions to easily interact with the module and the host processor over the air.
    For secure end-to-end communication with the cloud, an SSL/TLS stack is embedded in every module with no licensing charge. See AN4683 for details.
    The SW package also includes an AT command layer interface for user-friendly access to the stack functionalities via the UART serial port. For details, see UM1695.
    It is always possible to upgrade the module firmware via UART and Over-The-Air (FOTA).
    Out of the 1 MB extended Flash available on the SPWF01Sx.1y module, 512 kB of the Flash is dedicated to FW upgrade and the other 512 kB is dedicated to host proprietary files, organized in a file system image, accessible through the integrated web server.
    FOTA is also possible with the SPWF01Sx.2y module, temporarily storing the FW in the external host Flash memory, if it exists.
    ST may update the FW provided with the modules at any time. ST recommends that users regularly check for documentation and the current FW version available at www.st.com/wifimodules.

    Key Features

    • 2.4 GHz IEEE 802.11 b/g/n transceiver
    • STM32 ARM Cortex-M3, with 64 kB RAM and 512 kB Flash memory
      • 1 MB extended Flash available on the SPWF01Sx.1y
    • Integrated TCP/IP protocol stack
      • 8 simultaneous TCP or UDP clients and 1 socket server
      • 1 TLS/SSL socket client supporting up to TLS 1.2, including common encryption algorithms: AES (128, 256), hash (MD5, SHA-1, SHA-256) and public key algorithms (RSA, ECC)
      • Web server supporting dynamic web pages
      • RESTful API to get and post web content
    • WEP/WPA/WPA2 personal security
    • System modes: Station, IBSS, and miniAP (supporting up to 5 stations)
    • miniAP easily provisioned (SSID, PWD)
    • Fast Wi-Fi reassociation after reset
    • Firmware update via UART and Over-The-Air (FOTA); extended Flash on board with the SPWF01Sx.1y
    • TX power
      • 18.3 dBm @ 1 Mbps DSSS
      • 13.7 dBm @ 54 Mbps OFDM
    • RX sensitivity
      • -96.0 dBm @ 1 Mbps DSSS
      • -74.5 dBm @ 54 Mbps OFDM
    • 16 configurable GPIOs available
    • UART interface to host system
    • Advanced low-power modes
      • Standby with RTC: 43 μA
      • Idle connected (DTIM=1): 3.9 mA
      • Sleep current: 2.2 mA
      • RX traffic: 105 mA typical
      • TX traffic: 243 mA typical @ 10 dBm
    • Simple AT command set host interface through UART
    • Small form factor: 26.92 x 15.24 x 2.35 mm
    • Single voltage supply (3.3 V typical)
    • Multiple antenna options:
      • Integrated antenna (SPWF01SA.xy versions)
      • Integrated u.fl connector (SPWF01SC.xy versions)
    • Industrial temperature range: -40 °C to 85 °C
    • FCC/CE/IC/SRRC certified
    • RoHS compliant
    • Surface mount PCB module

Sample & Buy

Part Number
Package
Packing Type
Flash Size (Mb) (typ)
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
SPWF01SC.11 RF MODULE Tray 1.5
NRND
- - 5A992C - Check Availability

Distributor availability ofSPWF01SC.11

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 1 1 Order Now
RUTRONIK EUROPE 720 1 Order Now

Distributor reported inventory date: 2019-10-28

Distributor Name

Farnell Element14

Stock

1

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

720

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-28

SPWF01SC.11

Package

RF MODULE

Packing Type

Tray

Unit Price (US$)

*

Distributor availability ofSPWF01SC.11

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 1 1 Order Now
RUTRONIK EUROPE 720 1 Order Now

Distributor reported inventory date: 2019-10-28

Distributor Name

Farnell Element14

Stock

1

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

720

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-28

Flash Size (Mb) (typ)

1.5

Marketing Status

NRND

Unit Price (US$)

-

Quantity

-

ECCN (US)

5A992C

Country of Origin

-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Evaluation Tools

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS10078
      Serial-to-Wi-Fi b/g/n intelligent modules
      9.0
      445.41 KB
      PDF
      DS10078

      Serial-to-Wi-Fi b/g/n intelligent modules

    • Description Version Size Action
      AN4696
      SPWF01Sx power management options
      1.0
      672.6 KB
      PDF
      AN4902
      The SPWF01Sx – dynamic web pages
      2.0
      2.49 MB
      PDF
      AN4683
      Transport layer security protocol for SPWF01Sx module
      3.0
      703.07 KB
      PDF
      AN4886
      Wi-Fi module integration design guidelines
      1.0
      840.67 KB
      PDF
      AN4696

      SPWF01Sx power management options

      AN4902

      The SPWF01Sx – dynamic web pages

      AN4683

      Transport layer security protocol for SPWF01Sx module

      AN4886

      Wi-Fi module integration design guidelines

    • Description Version Size Action
      UM1695
      Command set reference guide for "AT full stack" for SPWF01Sx series of Wi-Fi modules
      8.0
      846.24 KB
      PDF
      UM1695

      Command set reference guide for "AT full stack" for SPWF01Sx series of Wi-Fi modules

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SPWF01SC.11
NRND
RF MODULE Industrial Ecopack1

SPWF01SC.11

Package:

RF MODULE

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

RF MODULE

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.