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ADI ADE7518: Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver


What is it?
Metering IC analog front end and fixed function DSP solution with an enhanced 8052 MCU core/RTC/LCD driver and all the peripherals to make an electronic energy meter with a LCD display in a single part. Measurement core includes active/reactive/apparent energy calcs, as well as voltage and current rms measurements. Info ready to use for energy billing by using built-in energy scalars. Microprocessor fxn includes: single-cycle 8052 core, a RTC with power supply backup pin/UART, and a SPI or I2C® interface. Ready-to-use information reduces the program memory size requirement, easy to integrate complicated design into 16kB of flash memory.

How is it used?
LCD meters can be used to display more information than Watt-hour only and enable Automatic Meter Reading capabilities by including an MCU on board. This added functionality can justify the upgrade of energy meter to electronic by providing to the utility more knowledge on their grid and customers. Liberalization of the energy industry in Europe 2008 will also accelerate the adoption of such solutions – grid and customers. Liberalization of the energy industry in Europe in 2008 will also accelerate the adoption of such solutions.

What are the key features and customer benefits?
GENERAL FEATURES (See datasheet for Energy Measurement and Microprocessor Features)
* Wide supply voltage operation: 2.4 V to 3.7 V
* Internal bipolar switch between regulated and battery inputs
* Ultralow power operation with power saving modes
* Reference: 1.2 V ± 0.1% (10 ppm/°C drift)
* 64-lead LQFP RoHS package option with operating temperature range of –40°C to +85°C

End Market:
I & I - Instrumentation; I & I - Industrial

Who are the potential customers?
Integration of the MCU and the energy metering front end should give the customers a better product at a similar price. Key features that are valued by customers are: Accuracy and reliability of ADI solutions, battery management, LCD driver, Real Time Clock. See presentation for detailed description of customer and their needs.