This solution features an efficient MCU-MPU heterogeneous architecture combining the NuMicro® M55M1 and NuMicro® MA35D1 for a fully offline edge AI HMI. The M55M1 handles local wake-word detection and NLU inference, extracting multiple semantic parameters from a single natural command without cloud connectivity, while the MA35D1 updates the GUI accordingly.

Linked via a lightweight UART interface to minimize routing and protocol overhead, this design showcases Nuvoton's Endpoint AI capabilities and serves as a premier reference for smart appliance HMI development.

• Feature
  

  -	Natural Language Understanding (NLU) with Multilingual Support
  -	Supports SD Card Read/Write
  -	Free Language Models for M55M1 Mini Board (VoiceAI)
  -	Supports 1024 × 600 TFT-LCD Display
  -	Supports Segger emWin AppWizard

• Specifications

  M55M1 (32-bit Arm® Cortex®-M55)
  -	Ethos-U55 220 MHz 256 MAC
  -	Operating Frequency: 220 MHz
  -	Memory: 2 MB Flash memory / 1.5 MB SRAM
  -	Connectivity: Parallel Image Sensor, DMIC, USB, I2C, UART, Nu-Link
  MA35D1 (Dual 64-bit Cortex®-A35 + Cortex®-M4)
  -	Operating Frequency: 800 MHz
  -	Memory: 384 KB SRAM / 256 MB DDR

• System Block Diagram