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71M6541D/F/G Datasheet(PDF) 113 Page - Maxim Integrated Products

Part # 71M6541D/F/G
Description  Energy Meter ICs
PDF  166 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

71M6541D/F/G Datasheet(HTML) 113 Page - Maxim Integrated Products

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71M6541D/F/G and 71M6542F/G Data Sheet
Rev 5
113
Name
Location
Rst Wk
Dir
Description
DIO_PV
2457[6]
0
–
R/W Causes VARPULSE to be output on pin SEGDIO1, if LCD_MAP[1] = 0.
DIO_PW
2457[7]
0
–
R/W Causes WPULSE to be output on pin SEGDIO0, if LCD_MAP[0] = 0.
DIO_PX
2458[7]
0
–
R/W Causes XPULSE to be output on pin SEGDIO6 , if LCD_MAP[6] = 0.
DIO_PY
2458[6]
0
–
R/W Causes YPULSE to be output on pin SEGDIO7 , if LCD_MAP[7] = 0.
EEDATA[7:0]
SFR 9E
0
0
R/W Serial EEPROM interface data.
EECTRL[7:0]
SFR 9F
0
0
R/W
Serial EEPROM interface control.
Status
Bit
Name
Read/
Write
Reset
State
Polarity Description
7
ERROR
R
0
Positive
1 when an illegal command
is received.
6
BUSY
R
0
Positive
1 when serial data bus is
busy.
5
RX_ACK
R
1
Positive
1 indicates that the
EEPROM sent an ACK bit.
EQU[2:0]
2106[7:5]
0
0
R/W
Specifies the power equation.
EQU
Watt & VAR Formula
(WSUM/VARSUM)
Inputs Used for Energy/Current
Calculation
W0SUM/
VAR0SUM
W1SUM/
VAR1SUM
I0SQ
SUM
I1SQ
SUM
0
VA*IA
1 element, 2W 1
f
VA*IA
VA*IB
1
IA
IB
1
1
VA*(IA-IB)/2
1 element, 3W 1
f
VA*(IA-IB)/2
–
IA-IB
IB
2
†
VA*IA + VB*IB
2 element, 3W 3
f Delta
VA*IA
VB*IB
IA
IB
Note:
1.
Optionally, IB may be used to measure neutral current.
† 71M6542F/G only



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