71m6543h-igtr/f Maxim Integrated Products, Inc., 71m6543h-igtr/f Datasheet - Page 86

• Manufacturer Part Number: 71m6543h-igtr/f
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

sensor in this example (connected to pins IADC0-IADC1). Each 71M6xx3 device is electrically isolated
71M6543F/H Data Sheet
4.3
Figure 31
sensors. Note that one shunt current sensor is connected without isolation, which is the neutral current
by a low-cost pulse transformer. The 71M6543F/H current sensor inputs must be configured for remote
sensor communications, as described in
remapping using the I/O RAM registers MUXn_SEL[3:0] allows the sequence of analog input pins to be
different from the standard configuration (a corresponding CE code must be used). See
AFE configuration corresponding to
86
Systems Using 71M6xx3 Isolated Sensors and Current Shunts
shows a typical connection for current shunt sensors; using the 71M6xx3 (polyphase) isolated
NEUTRAL
B
A
C
Figure 31: System Using Three-Remotes and One-Local (Neutral) Sensor
Shunt Current Sensors
Pulse Transformers
HOST
AMR
IR
© 2008–2011 Teridian Semiconductor Corporation
3x TERIDIAN
71M6xx3
Figure
Note: This system is referenced to Neutral
NEUTRAL
VADC10 (VC)
VADC9 (VB)
IADC4
IADC5
VADC8 (VA)
IADC2
IADC0
IADC1
IADC6
IADC7
IADC3
SPI INTERFACE
SERIAL PORTS
MODUL-
POWER FAULT
COMPARATOR
2.2.8 71M6xx3 Isolated Sensor Interface
MUX and ADC
*IN = Neutral Current
ATOR
TX
RX
31.
VREF
}
}
}
}
IN*
IC
IB
IA
TX
RX
TEMPERATURE
V3P3A V3P3SYS
71M6543F/
71M6543H
TERIDIAN
COMPUTE
MEMORY
SENSOR
ENGINE
TIMERS
FLASH
MPU
RAM
RTC
ICE
POWER SUPPLY
LOAD
GNDA GNDD
OSCILLATOR/
REGULATOR
DIO, PULSES
LCD DRIVER
VBAT_RTC
PWR MODE
CONTROL
BATTERY
MONITOR
WAKE-UP
COM0...5
SEG/DIO
PLL
VBAT
9/17/2010
V3P3D
XOUT
SEG
DIO
XIN
(page 22). Flexible
BATTERY
RTC
BATTERY
8888.8888
LCD DISPLAY
32 kHz
I
2
EEPROM
PULSES,
C or µWire
Figure 2
DIO
for the
v1.0