WiFi Dual-Band MCU Module

WF3235SFA is a 802.11a/b/g/n, 2.4GHz and 5GHz Dual-Band, IPv4 & IPv6, 256KB of RAM (or 1MB of executable flash/256KB of RAM) Low Energy MCU module based on CC3235S(or CC3235SF) SoC. The module offers a unique combination of lower power, integration of all external components including Dual-band chip antenna at a very affordable cost.

Created for IoT, the WF3235SFA module is a wireless module that integrates two physically separated on-chip MCUs, a CM4 application processor and a network processor.

WF3235SFA introduces new capabilities that further simplify the connectivity of things to the Internet. The main features of WF3235SFA include:

•      802.11 a/b/g/n: 2.4 GHz and 5 GHz support

•      2.4 GHz Coexistence with Bluetooth® low energy radio

•      Integrated Dual-band chip antenna or UFL connector for external antenna

•      More concurrent secure sockets, up to 16

•      Unique device identifier with ability to generate certificate signing request (CSR)

•      Online certificate status protocol (OCSP)

•      Wi-Fi Alliance® certified for IoT low power capabilities

•      Hostless mode for offloading template packet transmissions

•      Improved fast scan.

•      Application processor— Arm® Cortex®-M4 MCU with a user-dedicated 256KB of RAM and an optional 1MB

of executable flash.

•      Network processor to run all Wi-Fi and Internet logical layers. This ROM-based subsystem completely

offloads the host MCU and includes an 802.11 a/b/g/n dual-band 2.4-GHz and 5-GHz radio, baseband, and

MAC with a powerful hardware cryptography engine.

•      32Mbit SPI serial flash

Key Features

- 802.11a/b/g/n: 2.4 GHz and 5 GHz

- FIPS 140-2 Level 1 validated IC inside

- Multilayered security features help developers protect identities, data, and software IP

- Low-power modes for battery-powered applications

- Coexistence with 2.4-GHz radios

- Industrial temperature: –40°C to +85°C

- Antenna: Integrated Dual-band chip antenna or UFL connector

- 1.27-mm pitch QFM package for easy assembly and low-cost PCB design

- Transferrable Wi-Fi Alliance® certification

- Application microcontroller subsystem:

- Arm® Cortex®-M4 core at 80 MHz

- User-dedicated memory:

- 256KB of RAM

- 1MB of executable flash 

- Rich set of peripherals and timers:

- McASP supports two I2S channels

- SD, SPI, I2C, UART

- 8-bit synchronous imager interface

- 4-channel 12-bit ADCs

- 4 general-purpose timers (GPT) with 16-bit PWM mode

- Watchdog timer

- Up to 27 GPIO pins

- Debug interfaces: JTAG, cJTAG, SWD

- Wi-Fi network processor subsystem:

- Wi-Fi® core:

- 802.11 a/b/g/n 2.4 GHz and 5 GHz

- Modes:

- Access point (AP)

- Station (STA)

- Wi-Fi Direct® (only supported on 2.4GHz)

- Security:

- WEP

- WPA™/ WPA2™ PSK

- WPA2 Enterprise

- WPA3™ Personal

- Internet and application protocols:

- HTTPs server, mDNS, DNS-SD, DHCP

- IPv4 and IPv6 TCP/IP stack

- 16 BSD sockets (fully secured TLS v1.2 and SSL 3.0)

- Built-in power management subsystem:

- Configurable low-power profiles (always on, intermittently connected, tag)

- Advanced low-power modes

- Integrated DC/DC regulators

- Multilayered security features:

- Separate execution environments

- Networking security

- Device identity and key

- Hardware accelerator cryptographic engines (AES, DES, SHA/MD5, CRC)

- File system security (encryption, authentication, access control)

- Initial secure programming

- Software tamper detection

- Secure boot

- Certificate signing request (CSR)

- Unique per device key pair

- Application throughput

- UDP: 16 Mbps

- TCP: 13 Mbps

- Power-Management Subsystem:

- Integrated DC/DC converters support a wide range of supply voltage:

- Single wide-voltage supply  

VBAT: 2.3 V to 3.6 V

- Advanced low-power modes:

- Shutdown: 1 μA, Hibernate: 5.5 μA

- Low-power deep sleep (LPDS):120 μA

- Idle connected (MCU in LPDS):710 μA

- RX traffic (MCU active): 59 mA

- TX traffic (MCU active): 223 mA

- Wi-Fi TX power

- 2.4 GHz: 16 dBm at 1 DSSS

- 5 GHz: 15.1 dBm at 6 OFDM

- Wi-Fi RX sensitivity

- 2.4 GHz: –94.5 dBm at 1 DSSS

- 5 GHz: –89 dBm at 6 OFDM

- Additional integrated components

- 40.0-MHz crystal

- 32.768-kHz crystal (RTC)

- 32Mbit SPI serial flash

- RF filters, diplexer and passive components

- Footprint-compatible QFM package

- 1.27-mm pitch, 63-pin, 23mm × 20.5mm

- Module supports the TI SimpleLink Developer's Ecosystem

Applications

For Internet of Things applications, such as:

- Medical and Healthcare

- Multiparameter Patient Monitor

- Electrocardiogram (ECG)

- Electronic Hospital Bed & Bed Control

- Telehealth Systems

- Building and Home Automation:

- HVAC Systems & Thermostat

- Video Surveillance, Video Doorbells, and Low-Power Camera

- Building Security Systems and E-locks

- Appliances

- Asset Tracking

- Factory Automation

- Grid Infrastructure

Download

WF3235SFA_Datasheet_EN_V1.0.pdf