Enhanced Poly-Phase High-Performance Wide-Span Energy Metering IC 90E32AS Version 1.
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Table of Contents FEATURES .............................................................................................................................................................................. 7 APPLICATION ......................................................................................................................................................................... 7 GENERAL DESCRIPTION ........................................................................................................
90E32AS 4.2.1 4.2.2 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC SPI Slave Interface Format ............................................................................................................................................................ 32 Reliability Enhancement Feature .................................................................................................................................................. 32 5 REGISTER ..........................................
List of Tables Table-1 Table-2 Table-3 Table-4 Table-5 Table-6 Table-7 Table-8 Table-9 Table-10 Table-11 Table-12 Table-13 Table-14 Table-15 Table-16 Table-17 Table-18 Table-19 Table-20 Pin Description ............................................................................................................................................................................................. Power Mode Mapping ....................................................................................................
List of Figures Figure-1 Figure-2 Figure-3 Figure-4 Figure-5 Figure-6 Figure-7 Figure-8 Figure-9 Figure-10 Figure-11 Figure-12 Figure-13 Figure-14 Figure-15 Figure-16 Figure-17 Figure-18 Figure-19 Figure-20 Figure-21 Figure-22 Figure-23 Figure-24 Figure-25 Figure-26 90E32AS Block Diagram ............................................................................................................................................................................... 8 Pin Assignment (Top View) ..................
Enhanced Poly-Phase High-Performance Wide-Span Energy Metering IC 90E32AS Preliminary Information* FEATURES Metering Features • Metering features fully in compliance with the requirements of IEC62052-11, IEC62053-22 and IEC62053-23, ANSI C12.1 and ANSI C12.20; applicable in poly-phase class 0.5S or class 1 watt-hour meter or class 2 var-hour meter. • Accuracy of ±0.1% for active energy and ±0.2% for reactive energy over a dynamic range of 6000:1. • Temperature coefficient is 6 ppm/ ℃ (typ.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC BLOCK DIAGRAM OSCI PM1 PM0 Power Mode Configuration OSCO Crystal Oscillator VDD18 Regulator Power On Reset RESET Energy Metering (Forward/Reverse Active/Reactive/CF Generator) Current Detector I1P / I1N I2P / I2N I3P / I3N ADC-I1 ADC-I2 ADC-I3 V1P / V1N V2P / V2N V3P / V3N ADC-V1 ADC-V2 ADC-V3 DSP Flexible Piece-wise Non-linear Compensation Measure and Monitoring (V/I/rms / SAG / Phase / Frequency) Temperature Sensor V
0E32AS DGND NC NC DGND VDD18 VDD18 RESET SDI SDO SCLK CS 46 45 44 43 42 41 40 39 38 37 AGND 47 1 DVDD AVDD 48 PIN ASSIGNMENT 7 30 IRQ0 I3N 8 29 WarnOut IC 9 28 CF4 IC 10 27 CF3 Vref 11 26 CF2 AGND 12 25 CF1 ZX2 24 I3P 23 IRQ1 ZX1 31 22 6 ZX0 I2N 21 TEST OSCO 32 20 5 OSCI I2P 19 PM0 DGND 33 18 4 V3N I1N 17 PM1 V3P 34 16 3 V2N I1P 15 NC V2P 35 14 2 V1N IC 13 36 V1P 1 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPA
90E32AS 2 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC PIN DESCRIPTION Table-1 Pin Description Name Pin No. I/O Type Reset 41 I LVTTL AVDD 1 I Power DVDD 48 I Power VDD18 42, 43 P Power DGND AGND 19, 44, 47 2, 12 I I Power Power I1P I1N 3 4 I Analog Description Reset: Reset Pin (active low) This pin should connect to ground through a 0.1 μF filter capacitor and a 10kΩ resistor to VDD.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-1 Pin Description (Continued) Name Pin No. I/O Type Description OSCI 20 I OSC OSCO 21 O OSC ZX0 ZX1 ZX2 CF1 22 23 24 25 O LVTTL O LVTTL CF2 26 O LVTTL CF3 CF4 27 28 O O LVTTL LVTTL WarnOut 29 O LVTTL IRQ0 30 O LVTTL IRQ1 31 O LVTTL PM0 PM1 33 34 I 2 LVTTL OSCI: External Crystal Input OSCO: External Crystal Output A 16.384 MHz crystal is connected between OSCI and OSCO.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 3 FUNCTION DESCRIPTION - 3.1 POWER SUPPLY - - 3.3.1 The 90E32AS works with single power rail 3.3V. An on-chip voltage regulator regulates the 1.8V voltage for the digital logic. Any reset pulse that is shorter than 2μs can not reset the 90E32AS. The 90E32AS has four power modes: Normal (N mode), Partial Measurement (M mode), Detection (D mode) and Idle (I mode). In Idle and Detection modes the 1.
90E32AS 3.4 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC ANALOG/DIGITAL CHANNEL MAPPING The 6 analog ADC channels can be flexibly mapped to the 6 digital metering/measuring channels (V/I phase A/B/C). Refer to the ChannelMapI and ChannelMapU registers for configuration. Analog channel to digital channel mapping: Note that channel mapping is only valid in Normal mode and Patial Measurement mode.
90E32AS 3.5 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC METERING FUNCTION 3200 imp/kWh), and is usually referenced as an energy unit in this datasheet. The internal energy resolution for accumulation and conversion is 0.01 CF. Metering is enabled when any of the MeterEn bits are set. When metering is not enabled, the CF pulse will not be generated and energy accumulator will not accumulate energy.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Perphase Power Phase-A Phase-B Phase-C Bi-directional Energy Bi-directional accumulator, Energy roll over Bi-directional accumulator, positive/Energy roll over negative @ accumulator, positive/ 0.01CFroll over negative @ positive/ 0.01CF negative @ 0.01CF A/B/C (+)0.01 Forward CF energy (+)0.01 Forward accumulator CF energy (+)0.01 Forward (-)0.01 accumulator CF Backward Energy CF energy (-)0.
90E32AS 3.5.2 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Registers: ENERGY REGISTERS - Fundamental / harmonic The 90E32AS meters non-decomposed total active, reactive and apparent energy, as well as decomposed active fundamental and harmonic energy. The registers are listed as below. 3.5.2.1 - all-phase-sum / phase A / phase B / phase C - Forward / reverse Total Energy Registers Altogether there are 16 energy registers. Refer to 5.5.2 Fundamental / Harmonic Energy Register.
90E32AS 3.5.4 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC There are also no-load Current Threshold registers for Active, Reactive and Apparent energy metering participation for each of the 3 phases. If |P|+|Q| is lower than the corresponding power threshold, that particular phase will not be accumulated. Refer to the PStartTh register and other threshold registers.
0 10 ENC Total Active Harmonic Power 0 + Phase Active APower from DSP Phase Active Power DSP Phasefrom (Active Total Power Active Fundamental Power) from DSP Total Active Power ABS or Arithmatic B Phase |P| + |Q| > PPhaseTh? Phase |P| + |Q| > PPhaseTh? Phase |P|1 + |Q| > PPhaseTh? 10 0 ENA C ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC ENB 90E32AS Total Active Harmonic Energy Metering ABS > PStartTh? NoLoad Status 1 0 0 1 0 0 0 Phase Active Harmonic Energy Metering
90E32AS 3.6 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC MEASUREMENT FUNCTION - Measured parameters can be divided to 8 types as follows: - Active/ Reactive/ Apparent Power - Fundamental/ Harmonic Power - RMS for Voltage and Current - Power Factor - Phase Angle - Frequency - Temperature - Peak Value fundamental and harmonic power all-phase-sum / phase A / phase B / phase C Altogether there are 8 power registers. Refer to 5.6.
90E32AS 3.6.5 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC If all the phases are in the SAG condition, Frequency will be measured based on the channels which are not in phaseLoss condition (with the same order). If all phases are lost, the frequency will return zero. PHASE ANGLE Phase Angle measurement registers can be divided as below: - phase A / phase B / phase C - voltage / current The frequency data is not averaged (updated cycle by cycle). Refer to 5.6.
90E32AS 3.7 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC POWER QUALITY MONITORING Phase -C Phase -B Phase -A V-channel offset PGA ADC map ZX + OV Detector Peak Detector Sag Detector PhaseLoss Detector Phase Sequence, Frequency I-channel offset PGA ADC map Frequency Range ZX + 50/60 Phase Angle Peak Detector DSP Freq based Comp OI Detector Figure-9 Power Quality Monitor in Datapath 3.7.1 3.7.
90E32AS 3.7.2.1 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 3.7.3 Sag Detection Usually in the application the Sag threshold is set to be 78% of the reference voltage. The 90E32AS generates Sag event when there are less than three 8KHz samples (absolute value) greater than the sag threshold in one detecting period. Refer to 6.6 Voltage Sag and Phase Loss Timing. The detecting period length can be configured by the Sag_Period bits (b7~0, SagPeakDetCfg).
90E32AS 3.8 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC POWER MODE 3.8.1 NORMAL MODE (N MODE) The 90E32AS has four power modes. The power mode is solely defined by the PM1 and PM0 pins. In Normal mode, the default is that all function blocks are active except for current detector block. Refer to Figure-10. Table-2 Power Mode Mapping The current detector can be enabled and calibrated in normal mode using control bits in DetectCtrl register.
90E32AS 3.8.2 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC The digital I/Os' supply is powered. IDLE MODE (I MODE) In I/O and analog interface, the input signals from digital core (which is not powered) will be set to known state as described in Table-3. The PM1 and PM0 pins which are controlled by external MCU are active and can configure the 90E32AS to other modes. In Idle mode, all functions are shut off.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-3 Digital I/O and Power Pin States in Idle Mode (Continued) Name I/O type Type ZX0 ZX1 ZX2 Pin State in Idle Mode O LVTTL 0 CF1 CF2 CF3 CF4 O LVTTL 0 WarnOut O LVTTL 0 IRQ0 IRQ1 O LVTTL 0 VDD18 I Power Regulated 1.
90E32AS 3.8.3 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC The digital I/O state is the same as that in Idle state (except for IRQ0/ IRQ1 and PM1/PM0). DETECTION MODE (D MODE) In Detection mode, the current detector is active. The current detector compares whether any phase current exceeds the configured threshold using low-power comparators. The 90E32AS has two comparators for detecting each phase’s positive and negative current.
90E32AS 3.8.4 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC PARTIAL MEASUREMENT MODE (M MODE) • In this mode, all the measurements are through the same hardware that does the measurement in the normal mode. To save power, the energy accumulation block and a portion of the DSP computation code will not be running in this mode. • Option to turn-off the three analog voltage channel if there is no need to measure voltage and power. Option to lower down the digital clock from 16.
90E32AS 3.8.5 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC TRANSITION OF POWER MODES The above power modes are controlled by the PM0 and PM1 pins. In application, the PM0 and PM1 pins are connected to external MCU. The PM0 and PM1 pins have internal RC- filters. Normal Mode Generally, the 90E32AS stays in Idle mode most of the time while outage. It enters Detection mode at a certain interval (for example 5s) as controlled by the MCU.
90E32AS 3.9 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC EXTERNAL COMPONENT COMPENSATION 3.9.1 The channel gain can be tuned automatically according to measured temperature and current RMS. The calibrated channel gain and phase-delay offset could be tuned with respect to some reference parameter. This feature is useful when external component is not ideal and allow low cost sensors used in the system.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Delta-Gain Delta-Phi Delta-Gain Irms1 Irms0 Log(Irms) Delta-Phi GainIrms2 GainIrms1 GainIrms0 PhiIrms2 PhiIrms1 PhiIrms0 Figure-15 Segment Gain Compensation 3.9.2 If (Irms1
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 4 SPI INTERFACE 4.1 INTERFACE DESCRIPTION • • • • Four pins are associated with the interface as below: SPI Interface logic (As slave) SDI SDO SCLK CS SDI – Data pin, input. SDO – Data pin, output. SCLK – Clock input pin. CS – Chip select pin Input.
90E32AS 4.2 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC SPI INTERFACE The interface works in slave mode as shown in Figure-16. 4.2.1 Instruction Read Write SPI SLAVE INTERFACE FORMAT In the SPI mode, data on SDI is shifted into the chip on the rising edge of SCLK while data on SDO is shifted out of the chip on the falling edge of SCLK. Description read from registers write to registers Instruction Format 1 0 Address: Fixed 15-bit, following the access type bits.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 5 REGISTER 5.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-5 Register List (Continued) Register Address Register Name Read/Write Type Functional Description Comment Page 26H GainAIrms01 R/W Phase A Gain Compensation for Current Segment 0 and 1 27H GainAIrms2 R/W Phase A Gain Compensation for Current Segment 2 P 53 28H PhiBIrms01 R/W Phase B Phase Compensation for Current Segment 0 and 1 P 53 29H PhiBIrms2 R/W Phase B Phase Compensation for Current Segment 2 P 5
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-5 Register List (Continued) Register Address Register Name Read/Write Type Functional Description Comment Page Fundamental/ Harmonic Energy Calibration Registers 51H PoffsetAF R/W Phase A Fundamental Active Power offset 52H PoffsetBF R/W Phase B Fundamental Active Power offset 53H PoffsetCF R/W Phase C Fundamental Active Power offset 54H PGainAF R/W Phase A Fundamental Calibration Gain 55H PGainBF R/W
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-5 Register List (Continued) Register Address Register Name Read/Write Type Functional Description Comment Page Energy Register 80H APenergyT R/C Total Forward Active Energy 81H APenergyA R/C Phase A Forward Active Energy 82H APenergyB R/C Phase B Forward Active Energy 83H APenergyC R/C Phase C Forward Active Energy 84H ANenergyT R/C Total Reverse Active Energy 85H ANenergyA R/C Phase A Reverse Acti
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-5 Register List (Continued) Register Address Register Name Read/Write Type Functional Description Comment Page Power and Power Factor Registers B0H PmeanT R Total (all-phase-sum) Active Power B1H PmeanA R Phase A Active Power B2H PmeanB R Phase B Active Power B3H PmeanC R Phase C Active Power B4H QmeanT R Total (all-phase-sum) Reactive Power B5H QmeanA R Phase A Reactive Power B6H QmeanB R Phas
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-5 Register List (Continued) Register Address Register Name Read/Write Type Functional Description Comment Page Fundamental / Harmonic Power and Voltage / Current RMS Registers D0H PmeanTF R Total Active Fundamental Power D1H PmeanAF R Phase A Active Fundamental Power D2H PmeanBF R Phase B Active Fundamental Power D3H PmeanCF R Phase C Active Fundamental Power D4H PmeanTH R Total Active Harmonic Power
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-5 Register List (Continued) Register Address Register Name Read/Write Type Functional Description Comment Page Peak, Frequency, Angle and Temperature Registers F1H UPeakA R Channel A Voltage Peak P 70 F2H IPeakA R Channel A Current Peak P 70 F3H UPeakB R Channel B Voltage Peak F5H IPeakB R Channel B Current Peak F6H UPeakC R Channel C Voltage Peak F7H IPeakC R Channel C Current Peak F8H Freq R
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 5.2 SPECIAL REGISTERS 5.2.1 CONFIGURATION REGISTERS CRC GENERATION The device can automatically monitor the CRC changes versus a golden CRC which is latched after the first time the CRC computation is done. The latching event is triggered by none "0x55AA" value written to the CfgRegAccEn register (which means configuration done), followed by a new CRC result available event.
90E32AS 5.2.2 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC The interrupt status register is write-1-to-clear. It captures the interrupt event which is usually an internal state change. The (real time) internal state for that event is also available for read at any time. IRQ AND WARNOUT SIGNAL GENERATION The interrupt generation scheme is consistent for all the interrupt sources. For any interrupt source, there is an interrupt status register and an interrupt enable register.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC MeterEn Metering Enable Address: 00H Type: Read/Write Default Value: 00H Bit 7:0 Register Name MeterEn[7:0] Description Metering is enabled when any bit in this register is set.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC ChannelMapI Current Channel Mapping Configuration Address: 01H Type: Read/Write Default Value: 0210H Bit 15:11 Name - Description Reserved. ADC Input source for phase C current channel 10:8 IC_SRC 7 - Code 000 001 010 011 100 101 110 111 ADC Input Source I0 I1 I2 Fixed-0 U0 U1 U2 Fixed-0 Reserved.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC ChannelMapU Voltage Channel Mapping Configuration Address: 02H Type: Read/Write Default Value: 0654H Bit 15:11 Name - Description Reserved. ADC Input source for phase C voltage channel 10:8 UC_SRC 7 - Code 000 001 010 011 100 101 110 111 ADC Input Source I0 I1 I2 Fixed-0 U0 U1 U2 Fixed-0 Reserved.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC SagPeakDetCfg Sag and Peak Detector Period Configuration Address: 05H Type: Read/Write Default Value: 143FH Bit 15:8 7:0 Name Description PeakDet_period Period in which the peak detector detects the U/I peak. Unit is ms. Sag_Period Period in which the phase voltage needs to stay below the SagTh before to assert the Sag status. Unit is ms. The Phase Loss detector also uses this parameter in detecting Phase Loss.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC SagTh Voltage Sag Threshold Address: 08H Type: Read/Write Default Value: 1000H Bit Name 15:0 SagTh Description Voltage sag threshold level. 0xFFFF map to ADC output full-scale peak. PhaseLossTh Voltage Phase Losing Threshold Address: 09H Type: Read/Write Default Value: 0400H Bit 15:0 Name PhaseLossTh Description PhaseLoss threshold level 0xFFFF map to ADC output full-scale peak.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC FreqHiTh High Threshold for Frequency Detection Address: 0DH Type: Read/Write Default Value: 13ECH Bit Name 15:0 FreqHiTh Description High threshold for frequency detection. PMPwrCtrl Partial Measurement Mode Power Control Address: 0EH Type: Read/Write Default Value: 010FH Bit Name 15:9 - Description Reserved.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 5.3 LOW-POWER MODES REGISTERS 5.3.1 DETECTION MODE REGISTERS Current Detection register latching scheme is: When any of the 4 current detection registers (0x10 - 0x13) were programmed, all the 4 current detection registers (including the registers that not being programmed) will be automatically latched into the current detector's internal configuration latches at the same time.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC DetectTh1 Channel 1 Current Threshold in Detection Mode Address: 11H Type: Read/Write Default Value: 0000H Bit 15:8 7:0 Name Description CalCodeN Channel 1 current negative detector calculation code. Code mapping: 7'b000-0000, Vc = -1.2mV = --0.85mVrms (Vc is the threshold of low power computation) 7'b111-1111, Vc = 9mV = 6.35mVrms DAC typical resolution is [9- (-1.
90E32AS 5.3.2 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC PARTIAL MEASUREMENT MODE REGISTERS IDCoffsetA Phase A Current DC offset Address: 14H Type: Read/Write Default Value: 0000H Bit Name 15:0 IDCoffsetA Description Phase A current DC offset in decimator, signed with complement format.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC UDCoffsetC Voltage DC offset for Channel C Address: 19H Type: Read/Write Default Value: 0000H Bit Name 15:0 UDCoffsetC Description Phase C voltage DC offset in decimator, signed with complement format. UGainTAB Voltage Gain Temperature Compensation for Phase A/B Address: 1AH Type: Read/Write Default Value: 0000H Bit Name Description 15:8 UGainTB Voltage gain temperature compensation for phase B.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC LOGIrms1 Current (Log Irms1) Configuration for Segment Compensation Address: 21H Type: Read/Write Default Value: 0000H Bit Name 15:8 - 7:0 LogIrms1 Description Reserved. = log2(Irms1), Irms1 is the nominal RMS current at calibration. F0 Nominal Frequency Address: 22H Type: Read/Write Default Value: 5000 Bit Name 15:0 F0 Description Nominal frequency. For example, 5000 corresponds to 50.00Hz.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC GainAIrms01 Phase A Gain Compensation for Current Segment 0 and 1 Address: 26H Type: Read/Write Default Value: 0000H Bit Name Description 15:8 GainIrms1 Gain compensation for current segment 1 (Irms1 Irms0). Refer to 3.9.1 Gain Based Compensation.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC GainBIrms2 Phase B Gain Compensation for Current Segment 2 Address: 2BH Type: Read/Write Default Value: 0000H Bit Name 15:8 - 7:0 GainIrms2 Description Reserved. Gain compensation for current segment 2 (Irms < Irms1). Refer to 3.9.1 Gain Based Compensation.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 5.4 CONFIGURATION AND CALIBRATION REGISTERS 5.4.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC MMode0 Metering Method Configuration Address: 33H Type: Read/Write Default Value: 0087H Bit Name 15-13 - 12 Freq60Hz 11 HPFoff Disable HPF in the signal processing path. 10 didtEn Enable Integrator for didt current sensor. 0: disable (default) 1: enable 9 - 8 3P3W 7 CF2varh 6-5 - 4 ABSEnQ 3 ABSEnP 2 EnPA 1 EnPB 0 EnPC Register Description Reserved. Current Grid operating line frequency.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC MMode1 PGA Gain Configuration Address: 34H Type: Read/Write Default Value: 0000H Bit Name 15-14 - Description Reserved. PGA gain for all ADC channels. 13-0 PGA_GAIN Mapping: [13:12]: V3 [11:10]: V2 [9:8]: V1 [7:6]: [5:4]: I3 [3:2]: I2 [1:0]: I1 Encoding: 00: 1X (default) 01: 2X 10: 4X 11: N/A 5.4.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC PoffsetA Phase A Active Power offset Address: 41H Type: Read/Write Default Value: 0000H Bit Name 15-0 offset Description Phase A active power offset, signed with complement format. QoffsetA Phase A Reactive Power offset Address: 42H Type: Read/Write Default Value: 0000H Bit Name 15-0 offset Description Phase A reactive power offset, signed with complement format.
90E32AS 5.4.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC EMMState0 EMM State 0 Address: 71H Type: Read Default Value: 0000H Bit Name Description 15 OIPhaseAST Set to 1: if there is over current on phase A 14 OIPhaseBST Set to 1: if there is over current on phase B 13 OIPhaseCST Set to 1: if there is over current on phase C 12 OVPhaseAST Set to 1: if there is over voltage on phase A 11 OVPhaseBST Set to 1: if there is over voltage on phase B 10 OVPhaseCST Set to 1: if t
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC EMMState1 EMM State 1 Address: 72H Type: Read Default Value: 0000H Bit 15 Name FreqHiST Description This bit indicates whether frequency is greater than the high threshold 14 SagPhaseAST This bit indicates whether there is voltage sag on phase A 13 SagPhaseBST This bit indicates whether there is voltage sag on phase B 12 SagPhaseCST This bit indicates whether there is voltage sag on phase C 11 FreqLoST This bit indicates
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 11 OVPhaseBIntST Over Voltage on phase B status change flag 10 OVPhaseCIntST Over Voltage on phase C status change flag 9 URevWnIntST Voltage Phase Sequence Error status change flag 8 IRevWnIntST 7 INOv0IntST Current Phase Sequence Error status change flag Neutral line over current status change flag 6 TQNoloadIntST All phase sum reactive power no-load condition status change flag 5 TPNoloadIntST All phase sum active p
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC EMMIntEn0 EMM Interrupt Enable 0 Address: 75H Type: Read/ Write Default Value: 0000H Bit Name Description 15 OIPhaseAIntEN Phase A Over current status change interrupt generation enable 14 OIPhaseBIntEN Phase B Over current status change interrupt generation enable 13 OIPhaseCIntEN Phase C Over current status change interrupt generation enable 12 OVPhaseAIntEN Phase A Over Voltage status change interrupt generation enable
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC EMMIntEn1 EMM Interrupt Enable 1 Address: 76H Type: Read/ Write Default Value: 0000H Bit Name 15 14 13 12 FreqHiIntEn 9 8 FreqHiIntST status change interrupt generation enable SagPhaseAIntE Phase A Sag status change interrupt generation enable N SagPhaseBIntE Phase B Sag status change interrupt generation enable N SagPhaseCIntE Phase C Sag status change interrupt generation enable N 11 10 Description FreqLoIntEn FreqLoIntS
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC CRCDigest CRC Digest Address: 7AH Type: Read/ Write Default Value: 0000H Bit Name Description 15:0 CRCDigest This register returns the computed CRC remainder (Digest) value of the public configuration register upon read operation. This register can be conditionally written as the portal to update the golden CRC that internally latched. Refer to register CfgRegAccEn for the details.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 5.5 ENERGY REGISTER 5.5.
90E32AS 5.5.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 5.6 MEASUREMENT REGISTERS 5.6.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-14 Fundamental/ Harmonic Power and Voltage/ Current RMS Registers Register Address Register Name Read/Write Type Functional Description D1H PmeanAF R Phase A Active Fundamental Power D2H PmeanBF R Phase B Active Fundamental Power D3H PmeanCF R Phase C Active Fundamental Power D4H PmeanTH R Total Active Harmonic Power D5H PmeanAH R Phase A Active Harmonic Power D6H PmeanBH R Phase B Active Harmonic Po
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Table-15 Peak, Frequency, Angle and Temperature Registers Register Address Register Name Read/Write Type Functional Description Comment F9H PAngleA R Phase A Mean Phase Angle FAH PAngleB R Phase B Mean Phase Angle FBH PAngleC R Phase C Mean Phase Angle Unsigned, 1LSB corresponds to 0.1 degree, 0°~+360.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 6 ELECTRICAL SPECIFICATION 6.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Parameter Min Typ Digital Output Low Level (CF1, CF2, CF3, CF4, ZX0, ZX1, ZX2, SDO) Digital Output Low Level (IRQ0, IRQ1, WarnOut) Digital Output High Level (CF1, CF2, CF3, CF4, ZX0, ZX1, ZX2, SDO) VDD-0.4 Digital Output High Level (IRQ0, IRQ1, WarnOut) VDD-0.4 note1: Guaranteed by design or characterization, not production tested. note2: The maximum SPI bit rate during current detector calibration is 900k bps.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 6.2 METERING/ MEASUREMENT ACCURACY 6.2.1 METERING ACCURACY γ= Metering accuracy or energy accuracy is calculated with relative error: E mea − E real × 100% E real Where Emea is the energy measured by the meter, Ereal is the actual energy measured by a high accurate normative meter.
90E32AS 6.2.2 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC Where Umea means the measured data of one measurement parameter, and Ureal means the real/actual data of the parameter, MEASUREMENT ACCURACY The measurements are all calculated with fiducial error except for frequency. UFV means the fiducial value of this measurement parameter, which can be defined as Table-17.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC 6.3 INTERFACE TIMING 6.3.1 SPI INTERFACE TIMING (SLAVE MODE) The SPI interface timing is as shown in Figure-22 and Table-18.
90E32AS 6.4 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC POWER ON RESET TIMING In most case, the power of 90E32AS and MCU are both derived from 220V power lines. To make sure 90E32AS is reset and can work properly, MCU must force 90E32AS into idle mode firstly and then into nor- mal mode. In this operation, RESET is held to high in idle mode and deasserted by delay T1 after idle-normal transition. Refer to Figure-23.
90E32AS 6.5 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC ZERO-CROSSING TIMING V TZX ZX (Positive zero-crossing) TD ZX (Negative zero-crossing) ZX (All zero-crossing) Figure-25 Zero-Crossing Timing Diagram (per phase) Table-20 Zero-Crossing Specification Symbol TZX TD Description Min High Level Width Delay Time Electrical Specification 77 Typ 5 0.2 Max 0.
90E32AS 6.
90E32AS 6.7 ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC ABSOLUTE MAXIMUM RATING Parameter Relative Voltage Between AVDD and AGND Relative Voltage Between DVDD and DGND Analog Input Voltage (I1P, I1N, I2P, I2N, I3P, I3N, V1P, V1N, V2P, V2N, V3P, V3N) Maximum Limit -0.3V~4.5V -0.3V~4.5V -0.6V~AVDD -0.3V~DVDD -0.3V~5.
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC PACKAGE DIMENSIONS 80 April 2, 2013
90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC ORDERING INFORMATION XXXXX Device Type XXX Package X Temperature Range DATASHEET DOCUMENT HISTORY 81 I Industry (-40 ℃ to +85 ℃) ERG TQFP48 90E32AS Enhanced Poly-Phase High-Performance Wide-Span Energy Metering IC
