Analog Devices Inc. ADE7518ASTZF8

Description
The ADE7518 is a single-phase energy measurement IC that combines high-accuracy energy measurement capabilities with an 8052 microcontroller (MCU), real-time clock (RTC), and LCD driver. It offers ultralow power operation with power-saving modes, making it suitable for battery-powered applications. The ADE7518 supports various energy measurement standards and provides differential inputs with programmable gain amplifiers (PGAs) for flexible current and voltage sensing.

Features
Energy Measurement:
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
Less than 0.5% error on reactive energy over a dynamic range of 1000 to 1
Less than 0.5% error on rms measurements over a dynamic range of 500 to 1 for current and 100 to 1 for voltage
Supports IEC 62053-21, IEC 62053-22, IEC 62053-23, EN 50470-3 Class A, Class B, and Class C, and ANSI C12-16
Microprocessor:
8052-based core with 4 MIPS performance
8052-compatible instruction set
32.768 kHz external crystal with on-chip PLL
Two external interrupt sources
External reset pin
Low power battery mode
Wake-up from I/O, alarm, and 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 kHz
Embedded digital crystal frequency compensation for calibration and temperature variation
LCD Driver:
108-segment driver
2x, 3x, or 4x multiplexing
LCD voltages generated with external resistors
Peripherals:
UART, SPI or I²C, and watchdog timer
Power supply management with user-selectable levels
Memory:
16 kB flash memory
512 bytes RAM
Development Tools:
Single-pin emulation
IDE-based assembly and C-source debugging

Applications
Single-phase energy metering
Power quality monitoring
Battery-powered devices
Industrial automation
Smart grid applications