Features
- Arm® Cortex®-M33: 160MHz
- 704KB SRAM
- Wi-Fi 6, 802.11a/b/g/n/ac/ax 2.4/5 GHz, 1x1, 20MHz, MCS9 115Mbps, OFDMA, TWT
- WPA/WPA2- Enterprise/Personal, WPA2 SI, WPA3 SAE, and OWE
- O/QSPI Flash controller (XiP)
- QSPI PSRAM controller
- 2x SPI, 3x UART, 2x I2C, SDIO 3.0 (Device)
- 12-bit ADC, I2S, PDM, PWM
- TRNG
- Upto 28x GPIO
- Encryption: AES, DES/3DES, CHACHA, SHA1/224/256, RSA, DH, ECC
- Package: FCQFN: 66-pin, 5.6mm × 6.4mm, 0.4mm pitch, WLCSP: 70-pin 3.47mm x 4.06mm, 0.424mm pitch
- Operating temperature range: -40°C to 85°C
Description
The RA6W1 is a highly integrated ultra-low power Wi-Fi MCU integrating an Arm® Cortex®-M33 system processor with a dual-band 802.11a/b/g/n/ax Wi-Fi subsystem, on-chip memory, flexible peripheral interfaces, and power management features. This provides a standalone single-chip solution that can support complex low-power IoT solutions that require Wi-Fi network connectivity. Extremely low-power operation is accomplished by dynamically disabling elements of the MCU that are not in use, thus allowing a near zero level of power consumption when not actively transmitting or receiving data. Such low-power operation can extend the battery life up to a year or more, depending on the application. Built from the ground up for the Internet of Things (IoT), the RA6W1 is ideal for door locks, thermostats, sensors, pet trackers, asset trackers, sprinkler systems, connected lighting, smart home, home appliances, video doorbells, wearables, and other IoT devices.
To learn more, visit Wi‑Fi MCUs.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | Arm Cortex-M33 |
| Program Memory (KB) | 0 |
| RAM (KB) | 704 |
| Carrier Type | Reel, Tape & Reel |
| Supply Voltage (V) | 1.62 - 3.6 |
| I/O Ports | 28 |
| DRAM I/F | No |
| Temp. Range (°C) | Ta = -40 to +85 |
| Operating Freq (Max) (MHz) | 160 |
| Ethernet speed | No |
| EtherCat (ch) (#) | 0 |
| USB FS (host ch/device ch) | ( 0 / 0 ) |
| USB HS (host ch/device ch) | ( 0 / 0 ) |
| USB SS (host ch/device ch) | ( 0 / 0 ) |
| SCI or UART (ch) | 3 |
| SPI (ch) | 2 |
| I2C (#) | 2 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 0 |
| Wireless | Wi-Fi4 2.4GHz, Wi-Fi6 2.4/5GHz, Wi-Fi6 2.4GHz |
| SDHI (ch) | 0 |
| High Resolution Output Timer | No |
| PWM Output (pin#) | 8 |
| 32-Bit Timer (ch) | 1 |
| 16-Bit Timer (ch) (#) | 0 |
| Standby operable timer | Yes |
| Asynchronous General Purpose Timer / Interval Timer (ch) | 0 |
| 16-Bit A/D Converter (ch) | 0 |
| 14-Bit A/D Converter (ch) | 0 |
| 12-Bit A/D Converter (ch) | 4 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 0 |
| 12-Bit D/A Converter (ch) | 0 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 0 |
| Image Codec | No |
| Segment LCD Controller | No |
| Security & Encryption | Unique ID, AES, CHA-CHA20, ECC, RSA-4K, HMAC, SHA224/256), TRNG, DLM |
Product Comparison
 |  |  | |
| RA6W1 | RRQ61051 | RRQ61001 | |
| Pkg. Type | FCQFN, WLCSP | Module | Module |
| Pkg. Dimensions (mm) | 3.471 x 4.065 x 0.495, 5.6 x 6.4 x 0.78 | 15.0 x 20.0 x 3.0 | 15.0 x 20.0 x 3.0 |
| Data Flash (KB) | 0 | 8000 | 8000 |
| Wireless Standard | Wi-Fi 4 2.4GHz, Wi-Fi 6 2.4/5GHz, Wi-Fi 6 2.4GHz | Wi-Fi 4 (802.11b/g/n), Wi-Fi 6 (802.11ax) | Wi-Fi 6 (802.11ax) |
| Band | 2.4GHz, 2.4GHz + 5GHz | 2.4GHz, 2.4GHz + 5GHz | 2.4GHz + 5GHz |
Application Block Diagrams
 | Wi-Fi-Enabled Smart Dimmer Switch Wi-Fi smart dimmer switch design with two-wire, no-neutral installation, broad load compatibility, and efficient lighting control. |
 | Mode 3 AC EV Charger Wallbox Scalable Mode 3 AC EV charging platform for residential and public charging applications. |
 | Humanoid Battery Management System Integrated humanoid robot BMS enabling safe, real-time power management, protection, and battery-state control. |
 | Mid-Range Thermostat Mid-range thermostat with Wi‑Fi, integrated sensors, and smart home connectivity for enhanced comfort and efficiency. |
 | Scalable Medium-Graphics HMI Platform Scalable medium-graphics HMI design combines display, touch, and voice interaction across integrated and connected architecture variants. |
 | Automatic Pet Door & Tracking System Smart pet door with tag system for automatic entry and lost-pet tracking via proximity detection. |
 | Ki Wireless Power Transceiver System (Tx) High‑efficiency Ki wireless power transceiver combining inductive power transfer and NFC for reliable, compact, cable‑free appliance charging. |
 | Ki Wireless Power Receiver System (Rx) High‑efficiency Ki receiver converting wireless power with integrated NFC to enable reliable, compact, cable‑free appliance operation. |
 | Universal Bluetooth Low Energy Angle of Arrival Locator for Asset Tracking The ATLAS system enables real-time, high-precision tracking of thousands of assets with flexible power and connectivity. |
 | Smart Thermostat IoT-enabled smart thermostat offers remote monitoring, and energy efficiency, and supports rapid prototyping tools. |
 | Smart Compost Maker Smart compost maker design featuring Wi-Fi, motor drive, and touch control for fast and efficient prototyping. |
 | Matter-Ready Sensor Module with Wi-Fi & Bluetooth Matter-ready multi-sensor with Wi-Fi offers interoperability, battery/solar power, and supports multiple sensors. |
 | Smart All-in-One Pressure Cooking Pot Smart pressure cooker offers step-by-step guidance, Wi-Fi updates, precise cooking, and energy efficiency. |
 | Infusion Pump The infusion pump ensures controlled drug delivery with high stability, accuracy, and long-lasting battery life. |
 | Cloud-Connected Video Doorbell Video doorbell with Wi‑Fi control, image processing, and efficient power delivery for enhanced home security. |
Additional Applications
- Smart Home Appliances
- Smart Home
- Home Automation
- Wearables
- Access Control
- Smart Sensors
- Connected Agriculture
- IP Camera
- Smart Medical
- Industrial Sensors
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Support Communities
- RA6W1 - Zephyr support
... Your support (at least as I understand it from your website) is currently limited to support in e2-Studio and a special FSP for the RA6W1. My question: Is support for the RA6W1 planned for Zephyr? I haven’t been able to find anything about this so far. Best Regards ...
Mar 26, 2026 - RA6W1-RRQ61001
How can I estimate the average current consumption of the RRQ61001 module waking at say a 1s interval from sleep to send a short packet of data to the AP, say about 300bytes? Basically I roughly need to know how quicky it can wake, transmit and then return to sleep.
Feb 11, 2026 - RA6W1 - AT commands with Host MCU
Hi Renesas Team,I have just received my EK-RA6W1 and I want to test AT commands feature with a Host MCU.I want to know the necessary HW connections and which firmware I should use for this. I am considering the RA8 and RA6 MCUs for the Host MCU ...
Dec 24, 2025
Knowledge Base
- How can the current heap memory usage on RA6W1 be checked?
Last Updated: 10/15/2026 Question: How can the current heap memory usage on RA6W1 be checked? Answer: The current heap memory usage can be monitored using the os heap CLI command or the FreeRTOS APIs xPortGetFreeHeapSize() and xPortGetMinimumEverFreeHeapSize(). These methods report the current available heap memory and ...
Oct 15, 2026 - What is the default CPU clock speed of the RA6W1?
Last Updated: 10/01/2026 Question: What is the default CPU clock speed of the RA6W1? Answer: The RA6Wx/RRQ610x1 platform uses a 40 MHz external crystal oscillator (XTAL) as the primary clock source. The actual CPU clock frequency is derived internally and configured by the software ...
Oct 1, 2026 - What is the user space of retention memory in the RA6W1 SDK?
Last Updated: 10/01/2026 Question: What is the user space of retention memory in the RA6W1 SDK? Answer: The RA6W1 SDK provides a maximum 10,096 bytes of user data space in the Retention Memory (RTM) for storing application data that must be preserved during Sleep Mode ...
Oct 1, 2026
Support Communities
