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

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

Hardware Specifications

  • Processor
    • R7FA6M5BH3CFC MCU with Arm® Cortex®-M33 @ 200MHz
  • Memory
    • 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, bootm, 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 Renasas
  • 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

Ready to get started?

Schedule time to speak with one of our audio experts.