Features
- Arm Cortex-M33 system CPU running up to 160MHz
- Arm Cortex-M0+ Bluetooth LE subsystem CPU running at 16MHz
- 704KB SRAM (Wi-Fi subsystem) + 64KB retention memory + 256KB ROM + 2KB OTP
- Wi-Fi 6 (802.11a/b/g/n/ac/ax), dual-band 2.4GHz & 5GHz, 1×1, 20MHz channels, MCS9 115Mbps, OFDMA, TWT
- Bluetooth Low Energy 5.1, multi-connection, −93dBm sensitivity, programmable TX power
- Wi-Fi security: WPA/WPA2 Enterprise/Personal, WPA2-SI, WPA3 SAE, OWE
- Coexistence support for Wi-Fi + BLE operations
- External OQSPI flash with encrypted XiP support
- External QSPI PSRAM option
- Integrated secure asset storage and OTP regions
- Security: secure asset storage, secure boot, secure debug, TRNG, TLS/DTLS HW acceleration, device lifecycle management
- Encryption: AES, DES/3DES, CHACHA, SHA1/224/256, RSA, DH, ECC
- 2× UART, 2× SPI, 2× I²C, I²S, PDM/digital mic, SDIO host/slave, eMMC/SD support
- Up to 22 Wi-Fi GPIOs
- 8× 32-bit PWM/timers, multiplexed GPIO assignment
- 12-bit ADC × 4 channels (Wi-Fi subsystem)
- Ultra-low-power operation with multiple sleep modes; BLE sleep 1.8µA, Wi-Fi deep sleep down to sub-µA levels (mode-dependent)
- Integrated DC-DC converters and LDOs for RF, digital, and analog domains
- Clock sources: 40MHz crystal, 32.768kHz RTC crystal, integrated 32kHz RC oscillator
- BGA93 package
- Integrated matching circuits, U.FL/antenna pad interface options
- Operating voltage: 1.8V to 3.6V (rail-dependent)
- Operating temperature range: -40°C to +85°C
Description
The RA6W2 is a highly integrated ultra-low-power Wi-Fi MCU that combines an Arm® Cortex®-M33 processor with a dual-band 802.11a/b/g/n/ac/ax Wi-Fi® 6 subsystem and Bluetooth® Low Energy (LE) 5.1, alongside on-chip memory, advanced security, flexible peripheral interfaces, and integrated power management. This high level of integration enables a standalone single-chip solution for complex IoT designs requiring both Wi-Fi and Bluetooth LE connectivity. Extremely low-power operation is achieved by dynamically disabling unused functional domains, allowing near-zero power consumption during idle periods and significantly extending battery life in duty-cycled applications.
Built from the ground up for IoT, the RA6W2 incorporates secure boot, hardware crypto acceleration, and rich connectivity options including UART, SPI, I²C, I²S, PDM, SDIO, and Octal-SPI (OQSPI). With its combination of dual-radio connectivity, strong security, and energy-efficient processing, the RA6W2 is well-suited for smart home devices, home appliances, sensors, wearables, gateways, and other battery-powered or always-on connected products.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | Arm Cortex-M33 |
| Program Memory (KB) | 0 |
| RAM (KB) | 704 |
| Carrier Type | Reel |
| Supply Voltage (V) | 1.8 - 3.6 |
| I/O Ports | 22 |
| 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) | 5 |
| SPI (ch) | 2 |
| I2C (#) | 2 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 0 |
| Wireless | Wi-Fi6 2.4/5GHz + BLE 5.1 |
| 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(128/192/256), ChaCha20, ECC/RSA-4K, HMAC, SHA224/SHA256, TRNG, DLM |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| VFBGA | 3.9 x 6.4 x 0.78 | 93 | 0.424 |
Product Comparison
 |  |  |  | |
| RA6W2 | RRQ61051 | RA6W1 | RRQ61001 | |
| Pkg. Type | VFBGA | Module | FCQFN, WLCSP | Module |
| Data Flash (KB) | 0 | 8000 | 0 | 8000 |
| Wireless Standard | Wi-Fi 6 2.4/5GHz + BLE 5.1 | Wi-Fi 4 (802.11b/g/n), Wi-Fi 6 (802.11ax) | Wi-Fi 4 2.4GHz, Wi-Fi 6 2.4/5GHz, Wi-Fi 6 2.4GHz | Wi-Fi 6 (802.11ax) |
| Band | 2.4GHz + 5GHz | 2.4GHz, 2.4GHz + 5GHz | 2.4GHz, 2.4GHz + 5GHz | 2.4GHz + 5GHz |
Application Block Diagrams
 | Mode 3 AC EV Charger Wallbox Scalable Mode 3 AC EV charging platform for residential and public charging applications. |
 | Mid-Range Thermostat Mid-range thermostat with Wi‑Fi, integrated sensors, and smart home connectivity for enhanced comfort and efficiency. |
 | Oxygen Concentrator Controller with Smart Connectivity Smart oxygen concentrator control with RTOS-ready MCU, touch UI, and Bluetooth connectivity. |
 | Smart HMI System with Voice & Display Interfaces Smart HMI system with 32-bit MCU supports GUI, voice I/O, IoT connectivity, and fast development tools. |
 | Portable Thermal Printer A smart portable thermal printer with Wi-Fi, Bluetooth, and NFC connectivity. |
 | Smart Home Controller with Multiple PHYs All-in-one smart home gateway with multi-standard PHYs, intuitive control, and future-proof design. |
Additional Applications
- Smart Home Appliances
- Smart Home Devices
- Home Automation Systems
- Wearables and Fitness Devices
- Access Control Systems
- Smart Sensors and IoT Monitoring Nodes
- Connected Agriculture Equipment
- IP Cameras and Smart Surveillance
- Smart Medical and Health Monitoring Devices
- Industrial Sensors and Factory Automation Devices