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The Smart Meter is a kind of electric energy consumed measuring meter used in homes and industry for measuring the amount of electric energy consumed. It includes a low-power microcontroller (MCU), Energy measuring IC, to provide LCD display, RTC, data storage, payment card, ,Infrared reading, automatic remote meter reading throughy RS-485, Power Line Carrier Communication (PLC), 470 MHz Wireless communication, strong anti interference and excellent reliability. Due to the need to run at very low power and long standby time, save data, while powered by batteries when the power is cut off, the Nano110 series MCU is suitable for Smart Meter applications.

The Nano110 series provides high performance and low cost ultra-low power 32-bit ARM® Cortex™-M0 core, runs up to 42 MHz, and supports 32-bit hardware multiplier, Low operating voltage 1.8V to 3.6V, Ultra-low power operating mode (<200uA/MHz), Power down mode (RTC+LCD On, RAM retention <10uA and RTC,RAM retention < 2.5uA), Deep Power-down mode, RAM retention (< 1uA), Flash ROM up to 128 KB and RAM up to 16 KB, High integrated RTC, LCD, 12-bit ADC, 2 MSPS conversion rate, internal RC 12MHz OSC, and ISO7816-3 interface for smart card to reduce system BOM cost, rich peripheral I²Cx2 ,SPIx3, UARTx5, input I/O 5V tolerance, Anti-theft lock code bit, 96-bit Unique ID and 128-bit Unique customer ID, and strong anti anti-jamming ability (ESD 8kV, EFT 4kV).

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