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71M6513/71M6513H
A Maxim Integrated Products Brand
3 -Phase      Energy Meter IC
DATA SHEET
AUGUST 2011
CE
Address
0x52
0x53
0x55
Name
PH_AtoB_X
Angle in degrees
PH_AtoC_X
Angle in degrees
MAINEDGE_X
FREQU_SEL = 0
Phase lag from VA to VB.
PH_AtoB_X *360/N ACC +2.4
Phase lag from VA to VC.
PH_AtoC_X *360/N ACC +4.8
The number of zero
crossings of VA in the pre-
vious accumulation interval.
Description
FREQU_SEL = 1
Phase lag from VB to VC.
PH_AtoB_X *360/N ACC +2.4
Phase lag from VB to VA.
PH_AtoC_X *360/N ACC -2.4
The number of zero
crossings of VB in the pre-
vious accumulation interval.
FREQU_SEL = 2
Phase lag from VC to VA.
PH_AtoB_X *360/N ACC -4.8
Phase lag from VC to VB.
PH_AtoC_X *360/N ACC -2.4
The number of zero
crossings of VC in the pre-
vious accumulation interval.
Edge crossings are either direction and are debounced.
Temperature Measurement and Temperature Compensation
Input variables: TEMP_NOM is the reference value for temperature measurement, i.e. when this value is set with
TEMP_RAW_X at known temperature. The 71M6513/6513H measures temperature with reference to this value.
DEGSCALE is the slope or rate of temperature increase or decrease from the TEMP_NOM for TEMP_X measurement.
PPMC and PPMC2 are temperature compensation coefficients. Their values should reflect the characteristics of the band gap
voltage reference of the chip. PPMC and PPMC2 follow the square law characteristics to compensate for nonlinear temperature
behaviors, when the 71M6513/6513H is in internal temperature compensation mode.
EXT_TEMP allows the MPU to select between direct control of GAIN_ADJ or management of GAIN_ADJ by the CE, based on
TEMP_X and the temperature correction coefficients PPMC and PPMC2 .
Page: 72 of 104
? 2005-2011 Teridian Semiconductor Corporation
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