19-5375; Rev 1.2; 4/11
AVAILAB
LE
71M6543F/H and 71M6543G/GH
Energy Meter ICs
DATA SHEET
April 2011
GENERAL DESCRIPTION
The 71M6543F, 71M6543H, 71M6543G, and 71M6543GH are
Teridian’s 4th-generation polyphase metering systems-on-chips
(SoCs) with a 5MHz 8051-compatible MPU core, low-power real-
time clock (RTC) with digital temperature compensation, flash
memory, and LCD driver. Our Single Converter Technology® with
a 22-bit delta-sigma ADC, seven analog inputs, digital metrology
temperature compensation, precision voltage reference, and a 32-
bit computation engine (CE) supports a wide range of metering
applications with very few external components.
The 71M6543F, 71M6543H, 71M6543G and 71M6543GH support
optional interfaces to the 71M6xx3 series of isolated sensors that
offer BOM cost reduction, immunity to magnetic tamper, and
enhanced reliability. The ICs feature ultra-low-power operation in
active and battery modes, 5KB shared RAM, and 64KB
(71M6543F, 71M6543H) or 128KB (71M6543G, 71M6543GH) of
flash memory, which can be programmed with code and/or data
during meter operation. High processing and sampling rates
combined with differential inputs offer a powerful metering platform
for commercial and industrial meters with up to class 0.2 accuracy
(71M6543H, 71M6543GH).
A complete array of code development tools, demonstration code,
and reference designs enable rapid development and certification of
meters that meet all ANSI and IEC electricity metering standards
worldwide.
C
NEUTRAL
B
A
FEATURES
•
0.1% Accuracy Over 2000:1 Current Range
•
Exceeds IEC 62053/ANSI C12.20 Standards
•
Seven Sensor Inputs with Neutral Current
Measurement, Differential Mode Selectable
for Current Inputs
•
Selectable Gain of 1 or 8 for One Current
Input to Support Shunts
•
High-Speed Wh/VARh Pulse Outputs with
Programmable Width
•
64KB Flash, 5KB RAM (71M6543F/H)
•
128KB Flash, 5KB RAM (71M6543G/GH)
•
Up to Four Pulse Outputs with Pulse Co
unt
•
Four-Quadrant Metering, Phase Seque
ncing
•
Digital Temperature Compensation:
Metrology Compensation
Accurate RTC for TOU Functions with
Automatic Temperature Compensation
for Crystal in All Power Modes
•
Independent 32-Bit Compute Engine
•
46-64Hz Line Frequency Range with the Same
Calibration
•
Phase Compensation (±7°)
•
Three Battery-Backup Modes:
Brownout Mode
LCD Mode
Sleep Mode
•
Wake-Up on Pin Events and Wake-on-Timer
•
1µA in Sleep Mode
•
Flash Security
•
In-System Program Update
•
8-Bit MPU (80515), Up to 5MIPS
•
Full-Speed MPU Clock in Brownout Mode
•
LCD Driver:
6 Common Segment Drivers
Up to 56 Selectable Pins
•
Up to 51 Multifunction DIO Pins
•
Hardware Watchdog Timer (WDT)
•
I
2
C/MICROWIRE™ EEPROM Interface
•
SPI Interface with Flash Program Capability
•
Two UARTs for IR and AMR
•
IR LED Driver with Modulation
•
Industrial Temperature Range
•
100-Pin Lead-Free LQFP Package
Shunt Current Sensors
LOAD
Functional Diagrams
POWER SUPPLY
NEUTRAL
Note: This system is referenced to Neutral
3x TERIDIAN
71M6xx3
MUX and ADC
IADC0
IADC1
}
IN*
VADC10 (VC)
IADC6
IADC7
}
IC
VADC9 (VB)
IADC4
IADC5
}
IB
VADC8 (VA)
IADC2
IADC3
}
IA
VREF
SERIAL PORTS
V3P3A V3P3SYS GNDA GNDD
71M6xx3
71M6xx3
Resistor Dividers
Pulse Transformers
71M6xx3
TERIDIAN
71M6543F/
71M6543H/
71M6543G/
71M6543GH
TEMPERATURE
SENSOR
PWR MODE
CONTROL
WAKE-UP
REGULATOR
VBAT
VBAT_RTC
BATTERY
MONITOR
RTC
BATTERY
BATTERY
RAM
COMPUTE
ENGINE
FLASH
MEMORY
COM0...5
SEG
SEG/DIO
LCD DRIVER
DIO, PULSES
DIO
LCD DISPLAY
AMR
TX
RX
MODUL- RX
ATOR
TX
POWER FAULT
COMPARATOR
8888.8888
PULSES,
DIO
I
2
C or µWire
EEPROM
32 kHz
IR
MPU
RTC
TIMERS
V3P3D
OSCILLATOR/
PLL
XIN
Single Converter Technology is a registered trademark of Maxim Integrated
Products, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
SPI INTERFACE
HOST
Pin Configurations appear at end of data sheet.
XOUT
ICE
Functional Diagrams continued at end of data sheet.
*IN = Neutral Current
UCSP is a trademark of Maxim Integrated Products, Inc.
9/17/2010
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
