SMART SPEAKER & IoT SECURITY SOLUTIONS

Smart speakers are not just for playing music; they also support voice control, smart home management, and personalized experiences. Integrated with AI and IoT, these devices efficiently handle tasks such as playing music, setting reminders, and controlling electronic devices, bringing a more convenient, modern, and intelligent lifestyle. 

Understanding this, EPI Vietnam Technologies, the official distributor of Nuvoton in Vietnam, introduces a smart speaker solution using the NuMicro® M235x series, based on the Cortex-M23 core with TrustZone architecture. The M235x series supports DTS Play-Fi® technology on Google Cast wireless speakers, offering a high-quality audio demo for YouTube music playback on smart speaker systems. 

Beyond the integrated TrustZone® technology of the Armv8-M architecture, the product enhances security features to protect against external data tampering. It ensures that integrated hardware and software systems meet international security and communication standards, simplifying compliance with security certification requirements. 

Additionally, the M235x series is designed to operate with low power consumption, making it ideal for energy-efficient devices. The smart speaker solution enables voice control, Wi-Fi and Bluetooth support, and remote music playback, enhancing the user experience with seamless connectivity. 

System Diagram:

Security Features:

Main components used in the circuit:

1. NuMicro® M2354 – MCU – Nuvoton

  • Arm® Cortex®-M23 32-bit
  • Cortex®-M23 TrustZone MCU
  • Secure Boot (Root-of-Trust)
  • TRNG + PRNG (FIPS 140-3 Ready)
  • Crypto Accelerators (Chain of Trust)
  • UART/ I2C/ SPI/ CAN/ USB
  • PWM/ Timers/ Analog
  • Arm PSA Certified™

Learn more: M2354

2. MicroSD – #PS8131 – Phison

  • Speed Class: Class 10
  • Maximum Capacity: 512GB
  • Operating Voltage: 2.7 ~ 3.6V
  • Operating Temperature: -25°C ~ 85°C
  • Read/Write Current: < 400mA
  • Read/Write Speed: > 95/90 MB/s

Learn more: PS8131

Contact EPI Vietnam Technologies – the official distributor to receive consultation, free sample support, and source code: https://epi-tech.com.vn/

Contact EPI Vietnam Technologies Design solution

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