ADE7518 Datasheet | Analog Devices

.. Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver ADE7518 MICROPROCESSOR Features 8052-based core Single-cycle 4 MIPS 8052 core 8052-patible instruction set 32.768 k Hz external crystal with on-chip PLL Two external interrupt sources External reset pin Low power battery mode Wake-up from I/O, alarm, and universal asynchronous receiver/transmitter (UART) LCD driver operation Real-time clock Counter for seconds, minutes, and hours Automatic battery switchover for RTC backup Operation down to 2.4 V Ultralow battery supply current: 1.5 μA Selectable output frequency: 1 Hz to 16.384 k Hz Embedded digital crystal frequency pensation for calibration and temperature variation: 2 ppm resolution Integrated LCD driver 108-segment driver 2×, 3×, or 4× multiplexing LCD voltages generated with external resistors On-chip peripherals UART, SPI or I2C, and watchdog timer Power supply management with user-selectable levels Memory: 16 k B flash memory, 512 bytes RAM Development tools Single-pin emulation IDE-based assembly and C-source debugging GENERAL 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 Full operation: 4 m A to 1.6 m A (PLL clock dependent) Battery mode: 3.2 m A to 400 μA (PLL clock dependent) Sleep mode Real-time clock (RTC) mode: 1.5 μA RTC and LCD mode: 27 μA Reference: 1.2 V ± 0.1% (10 ppm/°C drift) 64-lead Ro HS package option Low profile quad flat package (LQFP) Operating temperature range: - 40°C to +85°C ENERGY MEASUREMENT Features Proprietary analog-to-digital converters (ADCs) and digital signal processing (DSP) provide high accuracy active (WATT), reactive (VAR), and apparent energy (VA) measurement Less than 0.1% error on active energy over a dynamic range of 1000 to 1 @ 25°C Less than 0.5% error on reactive energy over a dynamic range of 1000 to 1 @ 25°C Less than 0.5% error on root mean square (rms)...