The Nuvoton Smart Meter solution is based on NuMicro® M2351 microcontroller with Armv8-M TrustZone® architecture. With the in-house security technologies integrated, the solution can provide a foundation for advanced metering infrastructure (AMI), including device identity, communication security, remote management, and secure over-the-air (OTA) firmware update.

• Features
  

  -	Hardware crypto accelerators
  -	(D)TLS supports
  	- DLMS, LwM2M
  -	Root of Trust
  	- Secure bootloader
  	- Device ID

• Specifications
  

  M2351  (32-bit Arm® Cortex®-M23)
  -	Operating Frequency: 64 MHz
  -	512 KB dual bank Flash and 96 KB SRAM
  -	TrustZone® for Armv8-M technology
  -	Arm® Platform Security Architecture (PSA)   Certified Level 1
  -	Multiple power management modes

• System Block Diagram