71m6515h Maxim Integrated Products, Inc., 71m6515h Datasheet
71m6515h
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71m6515h Summary of contents
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... GENERAL DESCRIPTION The 71M6515H is a high-accuracy analog front end (AFE) IC that provides measurements for four- quadrant 3-phase metering. The combination of a 21-bit sigma-delta A/D converter with a six-input analog front end, a thermally compensated high pre- cision reference and a compute engine results in high accuracy and wide dynamic range. Patented Single-Converter Technology™ ...
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... Over-Voltage (All) Over-Current (All) D0-D7 State Change CONTROL I/O CONTROL Change of State (D0...D7) VBIAS (1.5V) V3P3 RESETZ Figure 2: IC Functional Block Diagram © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 PULSER V3P3A GNDA GNDA GNDD VOLT REG V3P3D GNDD GNDD V2P5 2 ...
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... V3P3A and V3P3D should be shorted together on the circuit board. GNDD and GNDA should also be shorted on the circuit board. Page ELECTRICAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONDITIONS CONDITION + Normal Operation Battery Backup No Battery Battery Backup © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 −0. 0.5V -0.5V to 4.6V -0.5V to +0.5V -1mA to 1mA, -0.5V to V3P3A+0.5V -1mA to 1mA, -0.5 to 3.0V -0 ...
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... Battery backup, V3P3A=V3P3D= 32kHz 85°C OSC VREF CONDITION Ta = 25º 10µA, -10µA LOAD VNOM(T) = VREF(22) + (T-22)TC1 + (T-22 -40ºC to +85º © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 MIN TYP MAX UNIT 2 V3P3D V −0.3 0.8 V V3P3D V3P3D V –0.4 ...
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... A PULSE GENERATOR TIMING SPECIFICATIONS CONDITION 31 APULSE=2 -1, 15 WRATE PULSE3=2 -1, 15 WRATE=2 -1 all pulse outputs © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 MIN TYP MAX UNIT 440 mV/V MIN TYP MAX UNIT 2000 ...
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... Baud Rate Character set Data Format Byte-to-byte delay (6515H times out after maximum delay) Byte-to-byte delay Response time to read command Response time to read command when 71M6515H is post-processing data PARAMETER Usable Input Range (Vin-V3P3A) Voltage to Current cross talk Vcrosstalk ∠ ...
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... PIN CONFIGURATION AND PIN FUNCTION TERIDIAN 71M6515H-IGT © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 VALUE UNIT ≥0.1±20% μF ≥0.1±20% μF 32.768 kHz pF 27±10% pF 27±10% ≥0.1±20% µF GNDD 48 ...
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... Chip reset: Input pin with internal pull-up resistor, used to reset the chip into a known state. For normal operation, this pin is set reset 1 the chip, this pin is driven to 0 for 5 microseconds. No external reset circuitry is necessary for power-up reset. © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... This pin must be terminated to V3P3D or ground. 4 UART serial Interface transmitter output. 4 Digital output test multiplexer. Controlled by TMUX[2:0]. 4 Selectable pulse output (default: VARh pulse). 4 Selectable pulse output (default: Wh pulse). Description DO NOT CONNECT THESE PINS! © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... Oscillator Equivalent Circuit Type 8: Oscillator I/O V3P3A from VREF Pin internal Pin reference GNDA VREF Equivalent Circuit Type 9: VREF © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET V3P3D from To V2P5 internal MUX Pin reference GNDD V2P5 Equivalent Circuit Type 10: V2P5 ...
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... Figure 3: Wh Accuracy, 0.3A - 200A/240V 0 60Hz Harmonic Data Harmonic © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 0 Deg 60 Deg -60 Deg 180 Deg 200 100 100 1000 90 Deg 150 Deg 270 Deg 100 200 100 ...
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... Figure 7: Typical VAh Accuracy for VAh Using Vector Method Page -40 - Temperature [°C] Performance for Apparent Energy (VAh Current [A] © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 ( ) Limit Limit typical chip 80 100 100 1000 V1.4 ...
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... Various current sensor technologies are supported including Current Transformers (CT), Resistive Shunts, and Rogowski (di/dt) Coils typical application, the 71M6515H sequentially digitizes the voltage inputs on pins IA, VA, IB, VB, IC, VC and performs calculations to measure active energy (Wh), reactive energy (VARh), and apparent energy (VAh). In addition to these measurement functions, the real time clock function allows the device to record time of use (TOU) metering information for multi-rate applications ...
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... W1SUM/ VAR0SUM VAR1SUM VAR2SUM VA*IA - VA*(IA-IB)/2 VA*IB VA*IA VB*IB VA*(IA-IB)/2 - VA*(IA-IB)/2 VB*(IC-IB)/2 VA*IA VB*IB Table 2: Meter Element Output Mapping ANALOG FRONT END DIGITAL COMPUTATION 2 and accumulates them for one interval. © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 W2SUM/ I0SQ I1SQ I2SQ SUM SUM SUM - IA- VC*IC IA-IB ...
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... If the 71M6515H is interfacing to an external DSP (typically, but not necessarily through the SSI interface), the host may turn off post-processing by setting the CE_ONLY bit in the CONFIG word. This will permit setting SUM_CYCLES below its recommended lower limit of 24. SUM_CYCLES may then be reduced to 1, creating an accumulation interval of only 42 samples. ...
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... Page 5757 Wh / Pulse ⋅ ⋅ WRATE X PULSE_FAST 0 0 1.5 1.5 1.5*2 1 (default) 1 (default) 1.5 Table 3: Pulse Speed Factor X -12 , © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 =96 -4 =0.09375 *I / LSB directly V1.4 ...
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... Accumulation 2 XFER XFER Post 0 Post 1 READY READY Host 0 APULSE write APULSE write Pulse -2 Pulse -1 Figure 9: Pulse Generator Timing © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 Accumulation 3 XFER Post 2 READY Pulse 2 Accumulation 3 XFER Post 2 READY APULSE write ...
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... UARTCSZ: This pin enables the UART when low. The UART can be reset by taking UARTCSZ briefly to the high state and then low again. The 71M6515H has several on-chip registers, which can be read and written. All transfers start with a stream of 8-bit bytes (LSB first) from the host on the RX input, followed by a (possibly null) stream of 8-bit bytes (LSB first) to the host on the TX output (see Figure 10 and Figure 11) ...
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... Figure 10: UART Write Operation most significant data byte Figure 11: UART Read Operation © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 least significant data byte ...
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... RTC and RAM during the power fail mode. Voltage Reference The internal voltage reference of the 71M6515H is calibrated at 25°C during device manufacture. The 71M6515H is given additional temperature-related calibrations which further compensate its ADC gain and allow it to achieve 10PPM/°C over ± ...
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... T - Calibration Temperature in °C Calibration Factors for CT and Resistive Shunt Once installed in a meter, the TERIDIAN 71M6515H IC has to be calibrated for the tolerances of current sensors, voltage dividers and signal conditioning components. The room temperature reading of its temperature sensor must also be entered. ...
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... Calibration Factors for Rogowski Coil Sensors If IMAGE is set to 01, i.e. the 71M6515H can be operated with Rogowski Coil sensors. In this case, one more calibration factor per phase is needed. The PHADJ parameters have non-zero defaults and do not obey the same formula used for CT calibration ...
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... For a typical calibration, a meter calibration system is used to apply a calibrated load, e.g. 240V at 30A, while interfacing the voltage and ) current sensors to the 71M6515H. This load should result in an ob- servable pulse rate at the PULSEW output depending on the selected energy per pulse. For example, 7.2kW will result in an energy rate corresponding to 7200Wh/3600s = 2Wh/s, i ...
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... φ ) tan ⎞ ⎟ ⎟ ⎠ errors, we calculate the new calibration voltage gain coefficient from the previous ones: © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET and E , where equal to 1/f 0 − 1 MARCH 2008 is measured ...
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... S φ ) − φ − tan sin φ − ) − φ − tan sin © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET ] ⎤ ] ⎥ ⎦ − π cos − MARCH 2008 V1.4 ...
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... PHADJ cos( − π − − − + − cos © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET ⎤ ] ⎥ ⎦ π MARCH 2008 V1.4 ...
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... Communication between the host and the 71M6515H is established by writing to and reading from the registers described in this section. The registers are accessible via the UART (see UART Write and Read Operation). The tables below contain the registers that can be accessed by the host to obtain data from the 71M6515H or to control and configure the IC. ...
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... R N/A 0x4D R N/A Outputs 0x3C R N/A Outputs 0x0F R N/A Outputs 0x0C R N/A 0x0D R N/A Outputs 0x0E R N/A 0x2F R 6444 Calibration 0x35 R N/A Outputs 0x1E R/W 0 Time © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 Comment Uses the post- processor Uses the post- processor Do not change V1.4 ...
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... R N/A 0x04 R N/A Outputs 0x05 R N/A 0x44 R/W 0 0x45 R/W 0 Calibration 0x46 R/W 0 0x17 W 21000 Alarms and Thresholds 0x40 W 21000 Alarms and Thresholds © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 Comment Defaults are –3973 for Rogowski operation Uses the post- processor V1.4 ...
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... R N/A Outputs N/A 0x0B R 0x00 R N/A 0x01 R N/A Outputs 0x02 R N/A 0x2D R/W 683 Pulse Generation Control Temperature 0x18 R/W 0 Compensation Temperature 0x19 R/W 0 Compensation © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 Comment Uses the post- processor Holds Y_CALC0 Holds Y_CALC1 and Y_CALC2 V1.4 ...
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... WCSUM 4: VARSUM 34: VAR2SUM_E 34: VAR2SUM_E 36: APULSER HOST 16 15 PULSE3_SRC Source selector register for the PULSE3 generator follows the formula: W © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 PULSER OUTPUT 8 7 PULSE4_SRC Source selector register for the PULSE4 generator V1.4 0 ...
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... The sum of the square of the calculated neutral current. ∑ -13 2 LSB = 9.4045*10 / In_8 IMAX The sum of squared current samples from each element. -13 2 LSB = 9.4045*10 / In_8 IMAX © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... APULSE3, and APULSE4 registers and that the pulse generator should be up- dated on the next READY interrupt 5757 Wh / Pulse ⋅ ⋅ WRATE X © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 (X = value formed by PULSE_SLOW and PULSE_FAST bits in the CONFIG register) V1.4 ...
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... CAL_IA (0x24), CAL_VA (0x25), CAL_IB (0x26), CAL_VB (0x27), CAL_IC (0x28), CAL_VC (0x29): These registers adjust the gain for the current and voltage measurements of each phase for the purpose of calibration. The calibration factors have to be stored by the host and written to the registers of the 71M6515H after power-up. The allowed 15 ...
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... Registers Controlling Basic Function and Settings of the 71M6515H CONFIG (0x16) The four bytes written to this register determine the basic operation of the 71M6515H. The function of the 28 bits used for this register are explained below: Bit 0: This bit (VAH_SELECT) determines the method used by the post-processor for determining the apparent energy measured in VAh ...
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... XFER_BUSY 0 6 VX_OK (Comparator Output V3P3/2 =1.5V internal analog voltage Bit 19 F_SELECT F_SELECT0 © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 999 . 75 ms Phase Selected Phase A Phase B Phase C Not allowed V1.4 ...
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... PPMC and PPMC2 registers. When DEFAULT_PPM is zero, the host is allowed to write its own values to the PPMC and PPMC2 registers. STATUS (0x14) The four bytes in this register reflect the status of the various measurement functions of the 71M6515H. This register is read only. When a bit in the STMASK register is set, an interrupt (IRQZ) is generated as soon as the corresponding bit in the STATUS register is set. ...
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... D_CONFIG register. Bit 10: This bit (XOVF), when set, indicates that the host failed to read at least one of the Wh values. Between interrupts (indicated by the READY bit in the STATUS word), the 71M6515H expects the host to read at least one of the WATTHR_A, WATTHR_B, or WATTHR_C values. Bit 11: This bit (READY), when set, indicates that the 71M6515H has fresh output values ready for the host. Setting this bit in STMASK will enable the hardware interrupt output pin IRQZ ...
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... DELTA_T is based on the difference between the current temperature, as provided in TEMP_RAW, and the reference temperature provided by TEMP_NOM. TEMP_RAW (0x12) This read-only register holds the raw temperature provided by the temperature sensor on the 71M6515H chip. During calibration, the host must write the value read from TEMP_RAW to TEMP_NOM in order to enable temperature compensation. ...
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... Page Y_CALC2 = quadratic compensation factor. One LSB is equivalent to 0.001PPM/° Counter for the PULSER generator (VARh Counter for the PULSE4 generator h © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... IASQSUM, IBSQSUM, and ICSQSUM registers. For even higher precision, the IASQFRACT, IBSQFRACT, ICSQFRACT registers should be used. Page rms © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 8 8 – –(2 – 1). Since the phase calculation ...
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... RMS voltage of phase B to 8781 = ⋅ V 425778000 RMS Page − ⋅ 208 = . 0 0385 VAh VARh − ⋅ 600 = 226 . © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... SAGTHR once each SAG_CNT samples in order to prevent a SAG warning. One LSB is defined as: − = ⋅ ⋅ LSB . 7 8798 2 10 VMAX Page - 0.0277781Wh. -13 *VMAX*IMAX /In_8 Wh) = 8520.2 15 -1), and the default is 80 (31.7ms). The time period defined by © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... Which values are to be selected for V_PTHRESHOLD and I_PTHRESHOLD? Page 255 = 823 ⋅ ⋅ − 8798 2 10 600 − − ⋅ rms V rms © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... Bits 31-24: These bits (RTM0) select the CE address for RTM0. Page 520 = = 14 , 893 ⋅ − 6 450 . 76 10 600 SUM _ CYCLES 400 = = 33 , 046 ⋅ − 6 450 . 76 10 208 SUM _ CYCLES © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... Registers Used for I/O Control D_CONFIG (0x1A) This register holds three bytes that are used to manipulate the DIO pins of the 71M6515H. Bits 7-0: These bits (DIO_VALUE) form the data register for the DIO pins D0 through D7. When a byte is written to DIO_VALUE, the pins configured as outputs (using the D_DIR register) will change their state accordingly. Pins configured as inputs will ignore the byte written to DIO_VALUE ...
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... DEDGE interrupt when their input value changes. This makes the selection for the D_CONFIG registers as follows: DIO_INTCTRL = 0xC0, D_DIR = 0x3F The values are combined into the 32-bit pattern 0xC03F0000. Page © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 V1.4 ...
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... QUANT_I 0x39 IASQSUM 0x3A IBSQSUM 0x3B ICSQSUM 0x3C INSQSUM 0x3D VASQSUM 0x3E VBSQSUM 0x3F VCSQSUM © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 Address Name 0x40 START_THRESHLD 0x41 PULSEW_R_CNTS 0x42 PULSE3_4_CNTS 0x43 PULSE_SRCS 0x44 VFEED_A 0x45 ...
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... Bits 7 through 5 (EQU) of the CONFIG register allow the selection of the metering equation that implemented by the 71M6515H. The equation to be used depends on the meter configuration. Figure 16 shows how the 71M6515H is connected for the most common configuration, the three-phase, four-wire WYE. The neutral wire connects to V3P3A. For this configuration, equation 5 must be selected. ...
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... IB IC V3P3A EQU = 2 P=VA*IA+VB*IB Figure 17: 3-Wire 3-Phase Delta Connection C B NEUTRAL A Figure 18: 4-Wire 3-Phase Delta Connection © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 LOAD B LOAD A 71M6515H LOAD C LOAD B LOAD V3P3A 71M6515H V1.4 ...
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... DIO Figure 19: Connections between 71M6515H and Host Note that the DIO pins of the host processor used to control the 71M6515H are not lost, since the 71M6515H can provide eight DIO pins ((DIO0…DIO7) to act as general-purpose DIO pins. Since the communication between the 71M6515H and its host is based on a binary protocol imperative for the host to issue a clean character stream without added bytes (UART drivers of high-level operating systems often add extra bytes to the character stream, relying on error-detecting protocols) ...
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... DIO pin as frequently as possible or through a timer-based polling method. The CONFIG register of the 71M6515H is set up to have the IRQZ pin to go low on every fresh data ready status, and the timer-serviced polling of the host processor will monitor the status of the DIO pin and initiate the serial communication when IRQZ is detected ...
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... XOVF flag or uninitialized condition signaled by the BOOTUP flag) or warnings and events (sag, creep, excessive voltage or current, DIO signal changes). If necessary, take corrective action. 12) After reading the required data from the 71M6515H, configuration changes should be made, if necessary. These con- figuration changes should be completed before the pre-processing period begins again. ...
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... If an accumulation interval has passed, and the energy values have not been read by the host, they are lost forever. In order to analyze the timing of the communication between the 71M6515H and the host useful to know the basic timing requirements of the post-processor of the 71M6515H. Some timing parameters are listed in Table 8. ...
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... PIN No. 1 Indicator 0.60 Typ. NOTE: Controlling dimensions are in mm PART DESCRIPTION 71M6515H 64-Pin LQFP Lead-Free, 0.1% accuracy 71M6515H 64-Pin LQFP Lead-Free, 0.1% accuracy, T&R Page PACKAGE OUTLINE 11.7 12.3 9.8 10.2 0.14 0.50 Typ. 0.28 Ordering Information ORDER NO. 71M6515H-IGT/F 71M6515H-IGTR/F © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 0 ...
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... F_SELECT to avoid inaccurate measurements and note stating that PULSE_SLOW and PULSE_FAST affect all four pulse sources. Added diagram “Connections between 71M6515H and host”. Added I/O Equivalent Circuit diagrams and circuit type numbers in Pin Descriptions. Added note in Pin Descriptions stating that the voltage at RX must not exceed 3.6V. ...
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... TSC assumes no liability for applications assistance. TERIDIAN Semiconductor Corp., 6440 Oak Canyon, Suite 100, Irvine, CA 92618 TEL (714) 508-8800, FAX (714) 508-8877, http://www.teridian.com Page © 2005-2008 TERIDIAN Semiconductor Corporation 71M6515H Energy Meter IC DATA SHEET MARCH 2008 3/13/2008 ...