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Direct Device Connectivity Solution via Nuvoton SMART HMI Platform

In an era where smart devices are increasingly prevalent, bringing convenience and comfort to living spaces, easy communication between users and devices has become a key factor to leverage modern technology fully. Understanding this, the HMI (Human-Machine Interface) solution has become an essential bridge between humans and machines, enabling intuitive, simple, and efficient control, monitoring, and operation of devices in modern life.

EPI Vietnam Technologies is proud to offer HMI solutions featuring powerful hardware integration, flexible software, and rich development tools from Nuvoton. Nuvoton has researched and developed an effective HMI system applicable to everyday life and industrial environments.

Overview of Nuvoton’s HMI Solution

  • Rapid User Interface Development: Supports graphics libraries such as emWin and LVGL, enabling easy creation of intuitive and professional user interfaces.
  • Multi-language and Human-Machine Interaction Support: Protocols like Buntalk allow flexible data transmission via UART, facilitating the development of multi-language applications and effective human-machine interactions.
  • High-Quality Audio: Utilizes audio codecs such as NAU88C22YG with 24-bit ADC/DAC, integrated speaker and headphone amplifiers, delivering high-quality sound for HMI applications with audio requirements.
  • Enhanced Security: Supports advanced security features including Arm TrustZone, secure boot, and hardware encryption (AES, SHA, RSA), ensuring data and application safety in demanding industrial environments.

Main components used in the circuit:

1. NAU88C22YG – Nuvoton 

Specifications: 

  • SNR (A-weighted): 89 dB @ 0 dB

  • THD+N (Total Harmonic Distortion + Noise): -78 dB @ 0 dB

  • Integrated BTL Speaker Driver: 1W @ 8Ω

  • Integrated Headphone Driver: 40 mW @ 16Ω

  • Standard Audio Interfaces: I2S & PCM

  • 5-Band Equalizer

Learn more: NAU88C22YG

2. N9H30F61IEC – Nuvoton 

Specifications: 

  • ARM926EJ-S core, clock speed up to 300 MHz

  • Integrated 64 MB DDR II memory

  • Up to two USB ports: one USB Host and one USB Host/Device

  • Supports RGB565 / RGB666 / RGB888 interfaces

  • Maximum resolution: 1024 x 768

  • Supports 8-channel 12-bit ADC

  • Sampling rate: 800 kSPS

  • Supports 4-wire resistive touchscreen functionality

  • Supports SPI / I²C / PWM / UART / CAN interfaces

  • 10/100 Mbps Ethernet

Learn more: N9H30F61IEC

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Block diagram

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