Maxim Integrated 71M6534 Energy Meter IC Family Software - Manual (Page 72)

71M653X Software User’s Guide
PulseWidth
Maximum time pulse
is on.
microseconds =
(2*PulseWidth + 1)*397,
0xFF disables this feature.
Takes effect only at start-up. 50
10ms
)13 signed 16
temp_nom
Nominal temperature,
the temperature at
which calibration
occurs.
Units of TEMP_RAW, from
CE.
0x408D1800
847662 (6531)
0x3DCC7800
(6533, 6534)
From a real PCB at
23C
)14 unsigned 32
ImaxB 1
Scaling Maximum
amps for PCB
element B
0.1A
2080
208.0A
)15 unsigned 16
ncount 2
The time that neutral
current can exceed
INThrsld before the
neutral bit is
asserted.
Count of accumulation
intervals
10, ~10 secs )15 unsigned 16
Starting current,
element B
sqrt(i0sqsum)*(2 16 )
513421 (6531)
433199 (6533 &
6534)
0.08A, same
rationale as
Ithrshld
)16 unsigned 32 IThrshldB 1
Maximum valid
neutral current
sqrt(i0sqsum)*(2 16 )
641776
0.1A
)16 unsigned INThrshld 2 32
VBatMin
Minimum valid battery
current.
Same as Vbat, below
0x00E54D4C
(6531)
0x00723D00 (6533
& 6534)
2V on a real PCB;
should be adjusted
for battery and
chip.
)17 unsigned 32
CalCount Count of calibrations
Counts number of times
calibration is saved, to a
maximum of 255.
)18 unsigned 8
RTC copy
Nonvolatile copy of
the most recent time
the RTC was read.
Sec, Min, Hr, Day, Date,
Month, Year
)19,
1A,
1B,
1C,
1D,
1E,
1F
unsigned
8
each
deltaT
Difference between
raw temperature and
temp_nom
Units of TEMP_RAW, from
CE.
)20, signed 32
Frequency Frequency Units from CE. )21 unsigned 32
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