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Smart Meter System-on-a-Chip Combines Metrology, Security and Communication

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An important advance in integration and security protection for the smart grid comes in the form of Zeus, a complete smart meter system-on-a-chip (SoC) from Maxim Integrated. Zeus offers highly accurate metrology, multiple layers of security, and plenty of processing horsepower for today’s advanced communication protocols. 

As smart meters become more connected, the need for security is paramount to protect against energy theft and cyber attacks on the grid. Zeus provides meter manufacturers with a platform for development in multiple end markets, supporting a wide range of security and communication requirements. A built-in cryptographic module secures communication; a secure bootloader prevents unauthorized firmware modification; and tamper detection assures providers that any attempts to physically attack the meter will be detected, recorded and reported. 

Other key features include superior metering accuracy with multiple ADC channels that each run at 10 ksps, offering 0.1% accuracy over a 5,000:1 dynamic range. Future proofing to support tomorrow’s applications includes a 120 MHz ARM Cortex M3 application processor and a 40 MHz, 32-bit MAXQ30 microcontroller with DSP support for the metering function. The multicore architecture supports WELMEC separation of legally relevant and irrelevant functions to ease validation.

Maxim Integrated, San Jose, CA. (408) 601-1000. [www.maximintegrated.com].