Renesas RA6M5

Renesas RA6M5

Capture and process voice in the noisiest environments with the cost-effective RA6M5 MCU. Powered by TalkTo, this reference design brings far-field Voice UI with Sensory TrulyHandsfree™ customizable wake word and commands sets that run locally, with no internet connection required.


High-performance 2-mic, far-field voice-control for endpoint products

Cost-effective, optimized design for incorporating voice UI into appliances

Customizable wake word and command set from Sensory

Localized command control (no internet connection needed)

Audio Front-end Features

DSP Concepts’ TalkTo provides reliable far-field performance in noisy environments

  • • 2-mic array with beamformer
  • • State-of-the-art noise cancellation with Adaptive Interference Canceller (AIC)
    • ○ No reference signal needed
    • ○ Eliminates 30dB of external noise sources such as background music

Sensory TrulyHandsfree Localized command control

Software Integrations

Software Integrations - Audio Weaver Designer
Audio Weaver Designer
Drag-and-drop graphical tool to customize and tune audio processing models in real-time with 500+ modules
Software Integrations - Audio Weaver Core
Audio Weaver Core
Embedded audio processing engine for Cortex-M33

Hardware Specifications


  • R7FA6M5BH3CFC MCU with Arm® Cortex®-M33 @ 200MHz


  • 2 MB Code Flash
  • 512 kB SRAM

Audio I/O

  • SPI/ I2C multimaster interface
  • Onboard 0.5 W stereo speakers
  • 3.5 mm TRS stereo audio output jack
  • Analog audio output destination selectable by jumper position

Board Connectors

  • 2.1 mm power supply barrel jack (5 V)
  • USB-A port for power output
  • Serial port with console/TTL UART output
  • J-Link ARM 10-pin connector
  • Quad serial-parallel interface
  • Push buttons installed for reset, boot, and volume control

Board Expansion Options 

  • Pmod™ Types 1/1A, 2/2A, 3/3A, and 5/5A
  • 16MB QSPI flash memory expansion


Included with the demo kit

  • Available from All About Circuits, in partnership with Renesas
  • DK-RA6M5 VUI Discovery Kit with RA6M5 MCU and pre-flashed demo firmware
  • Voice UI Quickstart Bundle: Everything you need to know to design voice-enabled IoT products, including design guidelines, microphone placement, and tools to get started
  • USB device cable (type-A male to micro-B male), USB host cable (type-A female to micro-B male), Ethernet patch cable
  • Noise simulation speaker
Renesas RA6M5 MCU Diagram

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