90E36 Datasheet, PDF (4/79 Pages) Integrated Device Technology – Poly-Phase High-Performance Wide-Span Energy Metering IC

90E36
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
4.3.1 DMA Burst Transfer for ADC Sampling ........................................................................................................................................ 29
4.3.2 Control Sequence for External Device ......................................................................................................................................... 31
5 CALIBRATION METHOD ................................................................................................................................................. 32
5.1 NORMAL MODE OPERATION CALIBRATION ........................................................................................................................................... 32
5.2 PARTIAL MEASUREMENT MODE CALIBRATION ..................................................................................................................................... 32
6 REGISTER ........................................................................................................................................................................ 33
6.1 REGISTER LIST ............................................................................................................................................................................................ 33
6.2 SPECIAL REGISTERS .................................................................................................................................................................................. 40
6.2.1 Soft Reset Register ........................................................................................................................................................................ 40
6.2.2 IRQ and WarnOut Signal Generation ............................................................................................................................................ 41
6.2.3 Special Configuration Registers ................................................................................................................................................... 46
6.2.4 Last SPI Data Register ................................................................................................................................................................... 48
6.3 LOW-POWER MODES REGISTERS ............................................................................................................................................................ 49
6.3.1 Detection Mode Registers ............................................................................................................................................................. 49
6.3.2 Partial Measurement mode Registers .......................................................................................................................................... 51
6.4 CONFIGURATION AND CALIBRATION REGISTERS ................................................................................................................................ 54
6.4.1 Start Registers and Associated Checksum Operation Scheme ................................................................................................ 54
6.4.2 Configuration Registers ................................................................................................................................................................ 54
6.4.3 Energy Calibration Registers ........................................................................................................................................................ 58
6.4.4 Fundamental/Harmonic Energy Calibration registers ................................................................................................................ 60
6.4.5 Measurement Calibration .............................................................................................................................................................. 60
6.5 ENERGY REGISTER .................................................................................................................................................................................... 61
6.5.1 Regular Energy Registers ............................................................................................................................................................. 61
6.5.2 Fundamental / Harmonic Energy Register ................................................................................................................................... 63
6.6 MEASUREMENT REGISTERS ..................................................................................................................................................................... 63
6.6.1 Power and Power Factor Registers .............................................................................................................................................. 63
6.6.2 Fundamental/ Harmonic Power and Voltage/ Current RMS Registers ...................................................................................... 64
6.6.3 THD+N, Frequency, Angle and Temperature Registers ............................................................................................................. 65
6.7 HARMONIC FOURIER ANALYSIS REGISTERS ......................................................................................................................................... 66
7 ELECTRICAL SPECIFICATION ....................................................................................................................................... 68
7.1 ELECTRICAL SPECIFICATION ................................................................................................................................................................... 68
7.2 METERING/ MEASUREMENT ACCURACY ................................................................................................................................................ 70
7.2.1 Metering Accuracy ......................................................................................................................................................................... 70
7.2.2 Measurement Accuracy ................................................................................................................................................................. 71
7.3 INTERFACE TIMING ..................................................................................................................................................................................... 72
7.3.1 SPI Interface Timing (Slave Mode) ................................................................................................................................................ 72
7.3.2 DMA Timing (Master Mode) ........................................................................................................................................................... 73
7.4 POWER ON RESET TIMING ........................................................................................................................................................................ 74
7.5 ZERO-CROSSING TIMING ........................................................................................................................................................................... 75
7.6 VOLTAGE SAG AND PHASE LOSS TIMING .............................................................................................................................................. 76
7.7 ABSOLUTE MAXIMUM RATING .................................................................................................................................................................. 77
PACKAGE DIMENSIONS...................................................................................................................................................... 78
ORDERING INFORMATION.................................................................................................................................................. 79
DATASHEET DOCUMENT HISTORY................................................................................................................................... 79
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December 9, 2011