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EQ12S8
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EQ12S8 Guide
User manual for EQ12S8
Here is the user manual for EQ12S8. You can read and download this user guide for free. User's manual, provided by the manufacturer, allows you to use properly your home appliances and electronics.
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Table of contents
Document Outline
1. Overview
2. Pin Descriptions
Digital Pins and Serial Data I/O
Analog Inputs / Outputs
Power Supply Connections
Clock Generator
Thermal Pad
2.1 Analog Pins
2.1.1 Voltage Inputs
2.1.2 Current Inputs
2.1.3 Voltage Reference
2.1.4 Crystal Oscillator
2.2 Digital Pins
2.2.1 Reset Input
2.2.2 CPU Clock Output
2.2.3 Digital Outputs
2.2.4 UART/SPI™ Serial Interface
2.2.5 SPI
2.2.6 UART
2.2.7 MODE Pin
3. Characteristics and Specifications
Recommended Operating Conditions
Power Measurement Characteristics
Typical Load Performance
Analog Characteristics
Analog Inputs (Current Channels)
Analog Inputs (Voltage Channels)
Temperature
Power Supplies
Voltage Reference
Digital Characteristics
Master Clock Characteristics
Filter Characteristics
Input/Output Characteristics
Switching Characteristics
Start-up
SPI Timing
UART Timing
Absolute Maximum Ratings
4. Signal Flow Description
4.1 Analog-to-Digital Converters
4.2 Decimation Filters
4.3 IIR Filters
4.4 Phase Compensation
4.5 DC Offset and Gain Correction
4.6 High-pass and Phase Matching Filters
4.7 Digital Integrators
4.8 Low-rate Calculations
4.8.1 Fixed Number of Samples Averaging
4.8.2 Line-cycle Synchronized Averaging
4.8.3 RMS Current and Voltage
4.8.4 Active Power
4.8.5 Reactive Power
4.8.6 Apparent Power
4.8.7 Peak Voltage and Current
4.8.8 Power Factor
4.9 Average Active Power Offset
4.10 Average Reactive Power Offset
5. Functional Description
5.1 Power-on Reset
5.2 Power Saving Modes
5.3 Zero-crossing Detection
5.4 Line Frequency Measurement
5.5 Energy Pulse Generation
5.5.1 Pulse Rate
5.5.2 Pulse Width
5.6 Voltage Sag, Voltage Swell, and Overcurrent Detection
5.7 Phase Sequence Detection
5.8 Temperature Measurement
5.9 Anti-creep
5.10 Register Protection
5.10.1 Write Protection
5.10.2 Register Checksum
6. Host Commands and Registers
6.1 Host Commands
6.1.1 Memory Access Commands
6.1.1.1 Page Select
6.1.1.2 Register Read
6.1.1.3 Register Write
6.1.2 Instructions
6.1.3 Checksum
6.1.4 Serial Time Out
6.2 Hardware Registers Summary (Page 0)
6.3 Software Registers Summary (Page 16)
6.4 Software Registers Summary (Page 17)
6.5 Software Registers Summary (Page 18)
6.6 Register Descriptions
6.6.1 Configuration 0 (Config0) – Page 0, Address 0
6.6.2 Configuration 1 (Config1) – Page 0, Address 1
6.6.3 Configuration 2 (Config2) – Page 16, Address 0
6.6.4 Phase Compensation (PC) – Page 0, Address 5
6.6.5 UART Control (SerialCtrl) – Page 0, Address 7
6.6.6 Pulse Output Width (PulseWidth) – Page 0, Address 8
6.6.7 Pulse Output Rate (PulseRate) – Page 18, Address 28
6.6.8 Pulse Output Control (PulseCtrl) – Page 0, Address 9
6.6.9 Register Lock Control (RegLock) – Page 0, Address 34
6.6.10 Phase Sequence Detection and Control (PSDC) – Page 0, Address 48
6.6.11 Checksum of Critical Registers (RegChk) – Page 16, Address 1
6.6.12 Interrupt Status (Status0) – Page 0, Address 23
6.6.13 Interrupt Mask (Mask) – Page 0, Address 3
6.6.14 Chip Status 1 (Status1) – Page 0, Address 24
6.6.15 Chip Status 2 (Status2) – Page 0, Address 25
6.6.16 Line to Sample Frequency Ratio (Epsilon) – Page 16, Address 49
6.6.17 No-Load Threshold (LoadMIN ) – Page 16, Address 58
6.6.18 Sample Count (SampleCount) – Page 16, Address 51
6.6.19 Cycle Count (CycleCount) – Page 18, Address 62
6.6.20 Filter Settling Time for Conversion Startup (TSETTLE) – Page 16, Address 57
6.6.21 System Gain (SysGAIN ) – Page 16, Address 60
6.6.22 Rogowski Coil Integrator Gain (IntGAIN ) – Page 18, Address 43
6.6.23 System Time (Time) – Page 16, Address 61
6.6.24 Voltage 1 Sag Duration (V1SagDUR ) – Page 17, Address 0
6.6.25 Voltage 1 Sag Level (V1SagLEVEL ) – Page 17, Address 1
6.6.26 Current 1 Overcurrent Duration ( I1OverDUR ) – Page 17, Address 4
6.6.27 Current 1 Overcurrent Level ( I1OverLEVEL ) – Page 17, Address 5
6.6.28 Voltage 2 Sag Duration (V2SagDUR ) – Page 17, Address 8
6.6.29 Voltage 2 Sag Level (V2SagLEVEL ) – Page 17, Address 9
6.6.30 Current 2 Overcurrent Duration (I 2OverDUR ) – Page 17, Address 12
6.6.31 Current 2 Overcurrent Level (I 2OverLEVEL ) – Page 17, Address 13
6.6.32 Voltage 1 Swell Duration (V1SwellDUR ) – Page 18, Address 46
6.6.33 Voltage 1 Swell Level (V1SwellLEVEL ) – Page 18, Address 47
6.6.34 Voltage 2 Swell Duration (V2SwellDUR ) – Page 18, Address 50
6.6.35 Voltage 2 Swell Level (V 2SwellLEVEL ) – Page 18, Address 51
6.6.36 Instantaneous Current 1 (I1) – Page 16, Address 2
6.6.37 Instantaneous Voltage 1 (V1) – Page 16, Address 3
6.6.38 Instantaneous Active Power 1 (P1) – Page 16, Address 4
6.6.39 Active Power 1 (P1AVG ) – Page 16, Address 5
6.6.40 RMS Current 1 ( I1RMS ) – Page 16, Address 6
6.6.41 RMS Voltage 1 (V1RMS ) – Page 16, Address 7
6.6.42 Instantaneous Current 2 (I2) – Page 16, Address 8
6.6.43 Instantaneous Voltage 2 (V2) – Page 16, Address 9
6.6.44 Instantaneous Active Power 2 (P2) – Page 16, Address 10
6.6.45 Active Power 2 (P2AVG ) – Page 16, Address 11
6.6.46 RMS Current 2 (I 2RMS) – Page 16, Address 12
6.6.47 RMS Voltage 2 (V2RMS ) – Page 16, Address 13
6.6.48 Reactive Power 1 (Q1Avg ) – Page 16, Address 14
6.6.49 Instantaneous Quadrature Power 1 (Q1) – Page 16, Address 15
6.6.50 Reactive Power 2 (Q2Avg ) – Page 16, Address 16
6.6.51 Instantaneous Quadrature Power 2 (Q2) – Page 16, Address 17
6.6.52 Peak Current 1 (I1PEAK) – Page 0, Address 37
6.6.53 Peak Voltage 1 (V1PEAK) – Page 0, Address 36
6.6.54 Apparent Power 1 (S1) – Page 16, Address 20
6.6.55 Power Factor 1 (PF1) – Page 16, Address 21
6.6.56 Peak Current 2 (I2PEAK) – Page 0, Address 39
6.6.57 Peak Voltage 2 (V2PEAK) – Page 0, Address 38
6.6.58 Apparent Power 2 (S2) – Page 16, Address 24
6.6.59 Power Factor 2 (PF2) – Page 16, Address 25
6.6.60 Temperature (T) – Page 16, Address 27
6.6.61 Total Active Power (PSUM ) – Page 16, Address 29
6.6.62 Total Apparent Power (SSUM ) – Page 16, Address 30
6.6.63 Total Reactive Power (QSUM ) – Page 16, Address 31
6.6.64 DC Offset for Current (I1DCOFF , I2DCOFF ) – Page 16, Address 32, 39
6.6.65 DC Offset for Voltage (V1DCOFF , V2DCOFF ) – Page 16, Address 34, 41
6.6.66 Gain for Current (I1GAIN , I2GAIN ) – Page 16, Address 33, 40
6.6.67 Gain for Voltage (V1GAIN , V2GAIN ) – Page 16, Address 35, 42
6.6.68 Average Active Power Offset (P1OFF, P2OFF ) – Page 16, Address 36, 43
6.6.69 Average Reactive Offset (Q1OFF , Q2OFF ) – Page 16, Address 38, 45
6.6.70 AC Offset for Current (I1ACOFF, I 2ACOFF ) – Page 16, Address 37, 44
6.6.71 Temperature Gain (TGAIN ) – Page 16, Address 54
6.6.72 Temperature Offset (TOFF ) – Page 16, Address 55
6.6.73 Calibration Scale (Scale) – Page18, Address 63
6.6.74 V-Channel Zero-crossing Threshold (VZXLEVEL) – Page 18, Address 58
6.6.75 I-Channel Zero-crossing Threshold (IZXLEVEL) – Page 18, Address 24
6.6.76 Zero-crossing Number (ZXNUM) – Page 0, Address 55
7. System Calibration
7.1 Calibration in General
7.1.1 Offset Calibration
7.1.1.1 DC Offset Calibration
7.1.1.2 AC Offset Calibration
7.1.2 Gain Calibration
7.1.3 Calibration Order
7.2 Phase Compensation
7.3 Temperature Sensor Calibration
7.3.1 Temperature Offset and Gain Calibration
8. Basic Application Circuits
9. Package Dimensions
10. Ordering Information
11. Environmental, Manufacturing, and Handling Information
12. Revision History
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