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Maxim Integrated 71M6521BE Energy Meter IC Family Software User Manual

Page 78

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71M652X Software User’s Guide

Revision 1.7

TERIDIAN Proprietary

78 of 138

© Copyright 2005-2007 TERIDIAN Semiconductor Corporation

*M6521F (32K) only; compilation option in M6521D (16K)
**Compilation option (available Demo Code), variable present but not in use.
† Requires features not in standard demo PCB

Table 5-12: MPU Memory Location

Name

Purpose

Function or LSB Value

CLI

Format

L in
bits

XDATA

Whn

Net metered Wh, all
elements A,

LSB of W0SUM

)54

signed

64

0x010B

Whn_A*

Net metered Wh,
element A, for
autocalibration

LSB of W0SUM

)56

signed

64

0x0113

Whn_B*

Net metered Wh,
element B, for
autocalibration

“ )58

signed

64

0x011B

VARhn*

Net metered VARh,
all elements

LSB of w0sum

)5C

signed

64

0x012B

VARhn_A*

Net metered VARh,
element A, for auto-
calibration

LSB of w0sum

)5E

signed

64

0x0133

VARhn_B*

Net metered VARh,
element B, for auto-
calibration

“ )60

signed

64

0x013B

MainEdgeCnt

Count of voltage zero
crossings

count )64

unsigned

32

0x014B

Wh

Default sum of Wh,
nonvolatile

LSB of w0sum

)65

signed

64

0x014F

Wh_A

Wh, element A,
nonvolatile

“ )67

signed

64

0x0157

Wh_B Wh,

element

B,

nonvolatile

“ )69

signed

64

0x015F

StatusNV

Nonvolatile status

See Status

)6D

n/a

32

0x016F