71M6513-IGTR/F Maxim Integrated Products, 71M6513-IGTR/F Datasheet - Page 68

• Manufacturer Part Number: 71M6513-IGTR/F
• Description: IC ENERGY METER 3PH 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of 71M6513-IGTR/F

• Mounting Style: SMD/SMT
• Package / Case: LQFP-100
• Program Memory Size: 64 KB
• Program Memory Type: Flash
• Supply Current (max): 6.4 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

During operation, the MPU is in charge of controlling the multiplexer cycles, for example by inserting an alternate multiplexer
sequence at regular intervals using MUX_ALT. This enables temperature measurement. The polarity of CHOP must be altered
for each sample. It must also alternate for each alternate multiplexer reading.
The MPU must program CHOP_EN alternately between 01 and 10 on every CE_BUSY interrupt except for the first CE_BUSY
after an XFER_BUSY interrupt. Note that when XFER_BUSY occurs, it will always be at the same time as a CE_BUSY
interrupt.
CE Calculations
The CE performs the precision computations necessary to accurately measure power. These computations include offset
cancellation, phase compensation, product smoothing, product summation, frequency detection, VAR calculation, sag
detection, peak detection, and voltage phase measurement. All data computed by the CE is dependent on the selected meter
equation as given by EQU (in I/O RAM). As a function of EQU, the element components V0 through I2 take on different
meanings.
CE RAM Locations
The information given in the following tables apply to CE code Version CE13B09D.
Page: 68 of 104
EQU
0
1
2
3
4
5
Operating CE codes with environment parameters deviating from the values specified by Teridian will lead to
A Maxim Integrated Products Brand
unpredictable results.
Watt & VAR Formula
(WSUM/VARSUM)
VA IA (1 element, 2W 1φ)
VA*(IA-IB)/2
(1 element, 3W 1φ)
VA*IA + VB*IB
(2 element, 3W 3φ Delta)
VA*(IA-IB)/2 + VC*IC
(2 element, 4W 3φ Delta)
VA*(IA-IB)/2 + VB*(IC-IB)/2
(2 element, 4W 3φ Wye)
VA*IA + VB*IB + VC*IC
(3 element, 4W 3φ Wye)
© 2005-2011 Teridian Semiconductor Corporation
VA*(IA-IB)/2
VA*(IA-IB)/2
VA*(IA-IB)/2
VAR0SUM
W0SUM/
VA*IA
VA*IA
VA*IA
VB*(IC-IB)/2
VAR1SUM
W1SUM/
3-Phase Energy Meter IC
VB*IB
VB*IB
-
-
Element Input Mapping
71M6513/71M6513H
VAR2SUM
W2SUM/
VC*IC
VC*IC
DATA SHEET
-
-
-
-
(IA-IB)
IA-IB
IA-IB
I0SQ
SUM
IA
IA
IA
IC-IB
I1SQ
SUM
IB
IB
IB
IB
-
AUGUST 2011
I2SQ
SUM
IC
IC
IC
-
-
-