ATWINC3400
IEEE 802.11 b/g/n WiFi + Bluetooth 4.0 module with integrated TCP/IP stack, AT command interface, and compact surface-mount package.
Product Overview
Description
The ATWINC3400 is a fully integrated WiFi and Bluetooth module providing IEEE 802.11 b/g/n WiFi connectivity along with Bluetooth 4.0/BLE support. The module includes a complete TCP/IP network stack and security protocols.
Featuring an AT command interface, the module can be controlled by any host microcontroller via UART, SPI, or I2C interfaces. This eliminates the need for complex WiFi driver development.
The compact 26.5mm x 13.5mm surface-mount module includes integrated antenna, crystal, and all RF circuitry, minimizing external components and accelerating time-to-market.
Product Series
ATWINC
Primary Application
IoT devices
Key Features
- Dual WiFi + Bluetooth
- Integrated TCP/IP stack
- AT command interface
- WPA/WPA2 security
- Compact module size
- FCC/CE certified
Specifications
| WiFi Standard | 802.11 b/g/n |
|---|---|
| Bluetooth | 4.0 / BLE |
| Frequency | 2.4GHz |
| Data Rate | 72.2 Mbps (WiFi) |
| Host Interface | UART, SPI, I2C |
| Security | WPA/WPA2, TLS/SSL |
| Antenna | Integrated PCB antenna |
| Package | Surface-mount module |
| Temperature Range | -40°C to +85°C |
| Architecture | WiFi/BT Module |
Applications
IoT devices
Electronic system design
Smart home products
Electronic system design
Industrial sensors
Sensor signal conditioning
Medical devices
Medical electronics
Wearable technology
Electronic system design
FAE Expert Insights
"The ATWINC3400 is my top recommendation for adding WiFi to embedded designs. The AT command interface means any microcontroller can control it without complex WiFi drivers. The integrated antenna and certification save months of development time. I've used it in IoT sensors, smart home devices, and industrial monitors with excellent results. The dual Bluetooth capability is a bonus for BLE sensor connectivity."
AT command interface eliminates WiFi driver development; pre-certified module
— Jennifer Park, BeiLuo
Frequently Asked Questions
What host interfaces does ATWINC3400 support?
The ATWINC3400 supports UART (default), SPI, and I2C host interfaces. UART is the simplest with AT commands. SPI offers higher throughput for data-intensive applications. I2C is available for systems with limited I/O. The interface is selected by strapping pins during power-up.
Use UART for simple control; use SPI for high data throughput applications.