71M6521BE Datasheet, PDF (80/97 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6521BE
Energy Meter IC
DATA SHEET
JANUARY 2008
Other CE Parameters
Temperature Parameters
MAINEDGE_X is useful for implementing a real-time clock based on the input AC signal. MAINEDGE_X is the number of half-
cycles accounted for in the last accumulated interval for the AC signal.
TEMP_RAW may be used by the MPU to monitor chip temperature. Temperature compensation is implemented by the CE,
based on the value written to TEMP_NOM.
CE
Address
0x11EC
0x105C
0x1054
0x1048
0x1080
0x1084
Name
TEMP_RAW_X
TEMP_NOM
DEGSCALE
GAIN_ADJ
PPMC1
PPMC2
Default Description
N/A
N/A
19065
16384
N/A
N/A
Filtered, unscaled reading from the temperature sensor.
Reference temperature for temperature compensation.
Multiplier for temperature calculation.
Scales all voltage and current inputs, based on the temperature
compensation mechanism. 16384 provides unity gain.
Linear parameter for temperature compensation.
Quadratic parameter for temperature compensation.
GAIN_ADJ is a scaling factor for measurements based on the temperature. GAIN_ADJ is controlled by the MPU for
temperature compensation.
CE
Address
0x1070
0x1074
0x1050
0x1078
0x107C
Name
CREEP0_THR
CREEP1_THR
SAG_THR
VNOMINAL
WNOMINAL
Sag, Creep and Tamper Control
Default Description
8311
8311
443000
1.27*10⁸
7646227
Wh threshold for channels A and B.
LSB = 6.6952 ⋅10^−13 ⋅ IMAX ⋅VMAX ^{N ACC}
F_S
The default value is equivalent to 2.5W
The threshold for sag warnings. The default value is equivalent to 80V RMS
if VMAX = 600V. The LSB value is 1.80587*10^-4V (RMS).
Nominal voltage to be applied to the larger of the two currents when neutral
tampering is detected. The default value is equivalent to 230V RMS.
Nominal power consumption to be applied when magnetic tampering is
detected.
LSB = 6.6952 ⋅10^−13 ⋅ IMAX ⋅VMAX ^{N ACC}
F_S
The default value is equivalent to 0.65Wh per accumulation interval, or
2300Wh/h (230V, 10A).
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