Optimized ARM Smart Meter Block Diagram
To realize the vision of AMI infrastructure, the smart meter must:
ARM processors are architected to minimize current draw, both when systems are fully operational and when they are inactive, providing incredibly power efficient processing for tethered applications. While important for mobile products like phones, this is incredibly important for meters that are expected to operate for periods up to 20 years on a single battery. The highly economical approach of the embedded processors, coupled with ARM Physical IP power management kits, reduces the power of the complete SoC. These kits incorporate an optimized set of physical IP libraries, memories and standard cells, further improving the useful workload/joule metric of the complete system.
The broad set of silicon Partners pursuing the microcontroller space using either the Cortex™-M0 or Cortex-M3 processors also increases the familiarity and availability of resources and software that can be utilized in designs, along with an assurance that OEMs will not be unduly locked in to a particular silicon supplier.