Maxim Integrated 71M6513H Power Meter IC Family Software User Manual
Page 71
71M651x Software User’s Guide
XRAM
Word
Address
Default
Value
Name
Description
0x02
191181742
(6511)
136105056
(6513)
PK_VTHR
Demo Code revision 3.04: Not implemented.
Demo Code revision 3.05: When the voltage exceeds this value, bit 5
in the MPU status word is set, and the MPU might choose to log a
warning. Event logs are not implemented in Demo Code.
6511: LSB = 6.6952*10
-13
*VMAX
2
V
2
h
RMS
6513: LSB = 9.4045*10
-13
*VMAX
2
V
2
h
RMS
The default value is equivalent to 407.3V
RMS
if VMAX = 600V and a 1-
second accumulation interval is used.
0x03
24856631
(6511)
17695797
(6513)
PK_ITHR
Demo Code revision 3.04: Not implemented.
Demo Code revision 3.05: When the current exceeds this value, bit 6
in the MPU status word is set, and the MPU might choose to log a
warning. Event logs are not implemented in Demo Code.
6511: LSB = 6.6952*10
-13
*IMAX
2
V
2
h
RMS
6513: LSB = 9.4045*10
-13
*VMAX
2
V
2
h
RMS
The default value is equivalent to 50.9A
RMS
if IMAX = 208A and a 1-
second accumulation interval is used.
0x04
0
Y_CAL
0x05
0
Y_CALC
0x06
0
Y_CALC2
Implement RTC trim.
1000
2
_
100
_
10
_
)
(
2
CALC
Y
T
CALC
Y
T
CAL
Y
ppm
CORRECTION
⋅
+
⋅
+
=
0x09
6000
VMAX
The nominal external RMS voltage that corresponds to 250mV pk at the
ADC input. The meter uses this value to convert internal quantities to
external. LSB=0.1V
0x0A
2080
IMAX
The nominal external RMS current that corresponds to 250mv pk at the
ADC input. The meter uses this value to convert internal quantities to
external. LSB=0.1A
0x0B
0
PPMC
PPM/C*26.84. Linear temperature compensation. A positive value will
cause the meter to run faster when hot. This is applied to both V and I
and will therefore have a double effect on products.
0x0C
0
PPMC2
PPM/C
2
*1374. Square-law compensation. A positive value will cause
the meter to run faster when hot. This is applied to both V and I and will
therefore have a double effect on products.
0x0D
9585
(6511)
22721
(6513)
DEGSCALE
Scale factor for TEMP_X.
TEMP_X=DEGSCALE*2
-22
*(TEMP_RAW_X - TEMP_NOM)
0x13
61
(6511)
16
(6513)
ICREEP
For each element, if the current of that element is below ICREEP, the
sample values for that element are zeroed. In that case, the accumula-
tors for Wh, VARh, and VAh are not updated and the instantaneous
value of IRMS for that element is zeroed. The default values correspond
to 80mA, if the default setting for IMAX is used.
6511: LSB = 6.6952*10
-13
IMAX
2
Wh
6513: LSB = 9.4045*10
-13
IMAX
2
Wh
Table 5-3: MPU Input Parameters
Revision 2.4
TERIDIAN Proprietary
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© Copyright 2005-2006 TERIDIAN Semiconductor Corporation