Features

• MCP39F521 Energy Measurement ICs. The Microchip MCP39F521 is an Energy Metering IC designed for real-time measurement of input power in single-phase applications. The integrated design offers power monitoring accuracy of 0.1% error and less across a 4000:1 dynamic range. Parameters Measured. Active, Reactive and Apparent Power True Root Mean Square (RMS) Current and RMS Voltage Line Frequency and Power Factor. Features. Power Monitoring Accuracy of 0.1% Error Across 4000:1 Dynamic Range 16-bit Calculation Engine 512 Bytes User-Accessible EEPROM Flexible I2C Interface Low-Drift Internal Voltage Reference, 10 ppm/°C Typical 64-bit Wide Import and Export Active Energy Accumulation Registers 64-bit Four Quadrant Reactive Energy Accumulation Registers Signed Active and Reactive Power Outputs Dedicated Zero Crossing Detection (ZCD) Pin Output with Less than 100 μs Latency Automatic Event Pin Control through Fast Voltage Surge Detection, Less than 5 ms Delay Two Independent Registers for Minimum and Maximum Output Quantity Tracking Fast Calibration Routines and Simplified Command Protocol Low-Drift Internal Voltage Reference, 10 ppm/°C Typical