71M6513/71M6513H
3-Phase Energy Meter IC
A Maxim Integrated Products Brand
DATA SHEET
AUGUST 2011
Constants..................................................................................................................67
Environment..............................................................................................................67
CE Calculations.........................................................................................................68
CE RAM Locations....................................................................................................68
CE Front End Data (Raw Data)..................................................................................69
CE Status Word.........................................................................................................69
CE Transfer Variables ...............................................................................................70
TYPICAL PERFORMANCE DATA.........................................................................................................77
Wh Accuracy at Room Temperature ........................................................................................77
VARh Accuracy at Room Temperature ....................................................................................77
Harmonic Performance............................................................................................................78
APPLICATION INFORMATION.............................................................................................................79
Connection of Sensors (CT, Resistive Shunt, Rogowski Coil) ...................................................79
Distinction between 71M6513 and 71M6513H Parts.................................................................79
Temperature Compensation and Mains Frequency Stabilization for the RTC.............................80
External Temperature Compensation.......................................................................................81
Temperature Measurement .....................................................................................................81
Crystal Oscillator.....................................................................................................................83
Connecting LCDs....................................................................................................................84
Connecting I2C EEPROMs......................................................................................................85
Connecting 5V Devices ...........................................................................................................85
Optical Interface......................................................................................................................87
Connecting V1 and Reset Pins................................................................................................87
Connecting the V3 Pin.............................................................................................................88
Connecting a Battery...............................................................................................................88
Flash Programming.................................................................................................................89
MPU Firmware Library.............................................................................................................89
SPECIFICATIONS................................................................................................................................90
Electrical Specifications...........................................................................................................90
LOGIC LEVELS.........................................................................................................91
VREF, VBIAS............................................................................................................93
CRYSTAL OSCILLATOR...........................................................................................93
LCD BOOST .............................................................................................................95
LCD DRIVERS..........................................................................................................95
RTC..........................................................................................................................95
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