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STMicroelectronics SPWF01SC.11
- Part No.:
- SPWF01SC.11
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver Modules and Modems
- Package:
- Module
- Datasheet:
-
SPWF01SC.11.pdf
- Description:
- RF TXRX MODULE WIFI U.FL SMD
- Quantity:
- Payment:
- Shipping:
Inventory:2,393
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Product details
Overview
SPWF01SC.11 from STMicroelectronics is a certified 802.11b/g/n Wi-Fi module with integrated TCP/IP stack, AT command interface, and embedded HTTP server/client functionality. It supports infrastructure and soft-AP modes, operates at 2.4 GHz, delivers up to +18 dBm RF output power, and integrates GPIO, ADC, DAC, and PWM peripherals for host-agnostic control. It is deployed in industrial IoT gateways requiring secure OTA firmware updates and captive portal web interfaces.
For engineers reviewing the SPWF01SC.11 datasheet, SPWF01SC.11 pinout, SPWF01SC.11 application, or SPWF01SC.11 equivalent, key selection criteria include its UART-based AT full-stack firmware (v3.5+), TLS 1.2 certificate management via AT+S.TLSCERT, support for HTTP GET/POST/DFS updates, and hardware revision-specific command availability (e.g., AT+S.HTTPDFSERASE only on .11 variants).
Technical Context
The SPWF01SC.11 implements a complete Wi-Fi subsystem including IEEE 802.11n MAC/PHY, WPA/WPA2-PSK security engine, and dual-mode operation (station + soft-AP). Its firmware embeds a real-time TCP/IP stack with socket API abstraction (AT+S.SOCKON/AT+S.SOCKR), DNS resolution, DHCP client, and HTTPD server supporting static file system updates over UART or HTTP.
It features dedicated hardware resources: 32-bit ARM Cortex-M3 host processor, 2 MB external SPI Flash for firmware and HTTP filesystem, 128 KB SRAM, and configurable GPIOs (GPIO1/PWM, GPIO8/ADC, GPIO15/DAC). Power management includes CFUN-defined states (Active, Power Save, Sleep, Standby) with beacon wakeup and listen interval control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wi-Fi Standard | IEEE 802.11b/g/n (2.4 GHz ISM band); enables interoperability with legacy and modern APs without external RF tuning. |
| RF Output Power | +18 dBm maximum; ensures robust link budget for industrial environments with metal enclosures or moderate distance. |
| Firmware Stack | "AT full stack" v3.5+; provides production-ready TCP/IP, TLS 1.2, HTTP(S) client/server, and file system abstraction via UART AT commands. |
| Memory Resources | 2 MB SPI Flash (firmware + HTTPD FS), 128 KB SRAM; supports dynamic file creation (AT+S.FSC), append (AT+S.FSA), and OTA update of both code and web assets. |
| Peripheral Interfaces | UART (console & data), GPIO (12 pins), ADC (10-bit on GPIO8), DAC (on GPIO15), PWM (on GPIO1); enables sensor interfacing and actuator control without host MCU involvement. |
| Security Features | TLS 1.2 certificate provisioning (AT+S.TLSCERT), domain validation (AT+S.TLSDOMAIN), and WPA2-PSK authentication; meets baseline requirements for cloud-connected devices. |
| Power Modes | CFUN 0–4 states with configurable sleep_enabled/wifi_powersave/standby_enabled; allows sub-100 µA deep-sleep current when idle. |
Pinout & Package
SPWF01SC.11 is housed in a compact 17.5 mm × 22.5 mm × 2.5 mm LGA package with 42 solder pads. Pin functions are defined per ST's SPWF01Sx Hardware User Manual (UM1694), Rev 7, Section 4.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_3V3 | Power supply input | 3.3 V ±5 % main supply; requires local 10 µF + 100 nF decoupling; powers RF, digital, and I/O sections. |
| GND | Ground reference | Common return for all analog/digital circuits; must be low-impedance plane connected to module ground pad. |
| UART1_TX | Host-to-module serial transmit | CMOS-level output (3.3 V logic); connects to host MCU RX; default baud rate 115200, 8N1, no flow control. |
| UART1_RX | Host-to-module serial receive | CMOS-level input (3.3 V tolerant); connects to host MCU TX; accepts AT commands and configuration data. |
| GPIO0 | Hardware factory reset enable | Pulled high at power-up to trigger non-volatile config reset; used during FW recovery sequences. |
| GPIO1 | PWM output | Configurable frequency/duty cycle (AT+S.PWM); drives LEDs, fans, or dimmable loads directly. |
| GPIO8 | ADC input | 10-bit SAR ADC channel; reads analog sensors (e.g., temperature, voltage) with AT+S.ADC command. |
| GPIO15 | DAC output | Configurable 8-bit DAC (AT+S.DAC); generates analog control signals for actuators or calibration references. |
Key Features
| Feature | Design Value |
|---|---|
| AT Full Stack Firmware | Self-contained TCP/IP + TLS + HTTP(S) stack accessible via UART; eliminates need for host-side protocol stacks or RTOS integration. |
| OTA Firmware Update | Secure in-field upgrade via AT+S.FWUPDATE using HTTP GET; validates integrity before flashing and supports rollback on failure. |
| Embedded Web Server | HTTPD server (AT+S.HTTPD) with configurable static file system; serves captive portals, device setup UIs, or sensor dashboards without external web host. |
| Soft AP Mode | Configurable mini-AP (AT+S.WIFI=1 + AT+S.SOCKD) enabling direct smartphone/tablet commissioning and local configuration. |
| Certificate Management | Runtime SSL/TLS certificate loading (AT+S.TLSCERT), cleanup (AT+S.TLSCERT2), and domain binding (AT+S.TLSDOMAIN); enforces hostname verification for secure cloud connections. |
Applications
| Industrial Sensor Gateway | Smart Building Controller |
|---|---|
|
Use Scenario: Wireless bridge collecting Modbus RTU sensor data from HVAC units and forwarding to cloud MQTT broker via TLS-secured HTTP POST. IC Role / Device Role / Timing Role: Wi-Fi network interface and protocol translator; handles socket management, TLS handshake, and retry logic autonomously. Use Value: Reduces host MCU firmware complexity by offloading TCP retransmission, certificate validation, and HTTP header generation. |
Use Scenario: Occupancy-controlled lighting system where motion detection triggers local PWM dimming (GPIO1) and uploads event logs via HTTPS to facility management platform. IC Role / Device Role / Timing Role: Dual-role connectivity module acting as soft-AP for initial BLE-to-Wi-Fi handoff and station for cloud reporting. Use Value: Enables zero-touch provisioning via smartphone browser and maintains uptime during AP roaming using AT+S.ROAM-triggered reassociation. |
| Medical Device Telemetry | Asset Tracking Beacon |
|
Use Scenario: Portable ECG monitor transmitting encrypted waveform data to HIPAA-compliant cloud storage using TLS 1.2 and AT+S.HTTPPOST with custom headers. IC Role / Device Role / Timing Role: Secure data conduit with certificate pinning (AT+S.TLSDOMAIN) and time-stamped logging (AT+S.SETTIME synced to NTP via AT+S.PING + manual offset). Use Value: Meets regulatory audit requirements by ensuring end-to-end encryption and verifiable timestamping without host CPU involvement. |
Use Scenario: Battery-powered pallet tracker sending GPS coordinates every 15 minutes via HTTP GET to logistics API, entering deep sleep (CFUN=3) between transmissions. IC Role / Device Role / Timing Role: Low-power connectivity engine managing Wi-Fi association, socket open/close, and sleep/wakeup timing independently. Use Value: Achieves >2-year battery life using hardware-managed sleep states and beacon-interval optimization (AT+S.SCFG=wifi_beacon_interval,200). |
Availability
SPWF01SC.11 is available at Aetrix Electronics and suitable for industrial IoT gateways, smart building controllers, medical telemetry systems, and asset tracking devices requiring stable component supply, long-term lifecycle support, and certified Wi-Fi compliance.
Supply support for SPWF01SC.11 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, sensors, power ICs, and wireless solutions for industrial, automotive, and consumer markets.
The SPWF01Sx series belongs to ST's certified Wi-Fi module product line, engineered specifically for resource-constrained embedded systems needing turnkey wireless connectivity with minimal host processing overhead.
FAQ
What firmware version does SPWF01SC.11 ship with, and how is it updated?
SPWF01SC.11 ships with "AT full stack" firmware version 3.5 or later, as confirmed in UM1695 Rev 8. Updates are performed via AT+S.FWUPDATE using HTTP GET to a secured server, with automatic checksum validation and flash write protection. The module retains previous firmware until successful verification, enabling safe rollback.
Does SPWF01SC.11 support WPA3 or 5 GHz Wi-Fi bands?
No. SPWF01SC.11 supports only IEEE 802.11b/g/n in the 2.4 GHz band and WPA/WPA2-PSK security. It does not implement WPA3 or 5 GHz (802.11a/ac/ax) PHY/MAC layers. Its certification scope is limited to 2.4 GHz operation with WPA2-PSK and TLS 1.2.
Can the embedded HTTP server serve dynamic content or only static files?
The HTTP server (AT+S.HTTPD) serves only static files stored in the external SPI Flash filesystem. Dynamic content generation requires host MCU intervention via CGI-like mechanisms (AT+S.HTTPREQ) or external web services; the module itself does not execute scripts or parse templates.
How is TLS certificate validation enforced during HTTPS communication?
TLS certificate validation requires explicit domain binding using AT+S.TLSDOMAIN to match the target server's CN or SAN exactly. Certificates loaded via AT+S.TLSCERT are validated against this domain during handshake; mismatch causes connection rejection. No certificate pinning or custom CA trust store configuration is supported.
SPWF01SC.11 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- RF Family/Standard:
- WiFi
- Protocol:
- 802.11b/g/n
- Modulation:
- DSSS, OFDM
- Frequency:
- 2.4GHz
- Data Rate:
- 65Mbps
- Power - Output:
- 18.3dBm
- Sensitivity:
- -96dBm
- Serial Interfaces:
- UART
- Antenna Type:
- Antenna Not Included, U.FL
- Utilized IC / Part:
- -
- Memory Size:
- 1.5MB Flash, 64kB RAM
- Voltage - Supply:
- 3.3V
- Current - Receiving:
- 105mA
- Current - Transmitting:
- 210mA ~ 344mA
- Mounting Type:
- Surface Mount
- Operating Temperature:
- -40°C ~ 85°C
SPWF01SC.11 FAQ
1.How can I place an order for SPWF01SC.11 through Aetrix?
Please submit a Request for Quotation (RFQ) for SPWF01SC.11 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SPWF01SC.11 reliable?
The price and inventory of SPWF01SC.11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPWF01SC.11 is usually 5 days.
3.What payment methods are accepted for SPWF01SC.11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPWF01SC.11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPWF01SC.11?
SPWF01SC.11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPWF01SC.11 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SPWF01SC.11?
For technical support, including SPWF01SC.11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPWF01SC.11 requirements.
6.How does Aetrix verify that SPWF01SC.11 is sourced from the original manufacturer or authorized distributors?
All SPWF01SC.11 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SPWF01SC.11 meets industry standards.
7.What is the process for return or replacement of SPWF01SC.11?
All SPWF01SC.11 units undergo pre-shipment inspection (PSI). If there is an issue with SPWF01SC.11, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SPWF01SC.11 part is unused and in its original packaging.
Return procedure for SPWF01SC.11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SPWF01SC.11 Tags
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ESP32-C3FH4
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ESP32-S2FH4
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ESP32-S2FN4R2
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ESP32-C3-MINI-1U-H4
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ESP32-C3-WROOM-02U-N4
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ESP32-H2-MINI-1-N4
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