| Product Specification

Microchip Technology RNWF02 Early Access Development Kit

The RNWF02 Module is a low-power 2.4 GHz IEEE 802.11b/g/n compliant, fully RF-certified wireless module designed for IoT applications.


ProductDevelopment Kit
For Evaluation OfRNWF02
Network FeaturesTCP, UDP, DHCP, ARP, HTTP, MQTT, IPv6 TLS 1.2/1.3 and DNS
Compliance2.4 GHz IEEE® 802.11b/g/n Single Spatial Stream of 20 MHz Channel Bandwidth
Operating Voltage3.0-3.6V (3.3V Typical)
Operating Temperature-40°C to 85°C
ApplicationsSmart Factories/Control Devices, Security Systems, CCTV, Smart Homes/Lighting, Smart Locks, Computing, Protocol Bridging, IoT Sensor Tag, Remote Control, Wearable Smart Devices, Industrial Control


The Microchip Technology RNWF02 Early Access Development Kit is designed to simplify adding Wi-Fi connectivity to devices for the Internet of Things (IoT). It integrates with a host microcontroller (MCU) and allows communication with the cloud through simple ASCII commands. This development kit is targeted at rapid prototyping by minimizing complexities. It boasts a low-power, fully certified Wi-Fi module and an onboard antenna, eliminating the need for separate RF expertise or components. Security features like WPA3 and TLS are built-in, and the kit offers global regulatory certifications.

Overall, the RNWF02 Early Access Development Kit aims to reduce development time and risk for projects incorporating Wi-Fi connectivity. The development kit is best used for applications including smart factories, security systems, CCTV, smart homes, smart locks, computing, protocol bridging, remote control, and wearable smart devices.

R9A02G021 Low-Power Microcontroller Development Kit Features  

Compliance and Connectivity

The RNWF02 module offers a variety of features to ensure seamless connectivity and compliance with various standards. It supports a single spatial stream with a 20 MHz channel bandwidth and includes TCP/IP-based protocols such as SSL and MQTT. The development kit also supports STA mode and Soft AP functionality in various network configurations, providing flexibility for different network setups.

Security and Management

Security is a major concern for IoT devices, and the RNWF02 module takes this seriously. It features a protected management frame handled in hardware, WPA3 support, and secure boot with hardware root of trust. These features help to protect against unauthorized access and ensure the integrity of the firmware. Additionally, OTA firmware updates are supported, ensuring the device stays updated and secure over its lifetime.

Power and Interface Options

The RNWF02 module is designed for efficient operation and ease of integration. An integrated power amplifier and switch, alongside power management capabilities, optimize its power consumption. The module offers a UART host interface and can be purchased with or without an integrated Microchip Trust&Go secure device.

Network and Security Offloading

The on-chip network stack offloads significant processing tasks from the MCU, covering protocols like TCP, UDP, DHCP, and more. This frees up the MCU's resources for other tasks and improves overall system performance. It also features hardware accelerators for enhanced security and connectivity performance.

Advanced Energy and Security Features

Finally, the RNWF02 module includes advanced energy-saving features like connected sleep and extreme deep sleep modes. The latter consumes less than 1 µA, making it ideal for battery-powered applications. Additionally, the module is equipped with robust security features, including various encryption and authentication engines, supporting numerous algorithms and key sizes.


The RNWF02 development kit is ideal for various applications, including control devices, CCTV, smart homes or lighting, smart locks, computing, Wi-Fi dongles, protocol bridging, IoT, remote control, wearable smart devices, smart factories, security systems, and more. It is designed to meet various international certification standards, ensuring compliance with FCC, ISED, UKCA, and CE radio regulations.



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