Energy Meter. 71M6543G Datasheet

71M6543G Meter. Datasheet pdf. Equivalent

Part 71M6543G
Description Energy Meter
Feature 71M6543F/71M6543G Energy Meter ICs GENERAL DESCRIPTION The 71M6543F/71M6543G are 4th-generation po.
Manufacture Maxim Integrated
Datasheet
Download 71M6543G Datasheet



71M6543G
71M6543F/71M6543G
Energy Meter ICs
GENERAL DESCRIPTION
The 71M6543F/71M6543G are 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/71M6543G 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) or 128KB (71M6543G) of
flash memory, which can be programmed with code and/or data
during meter operation.
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 Shunt Current Sensors
NEUTRAL
B
LOAD
A
POWER SUPPLY
NEUTRAL
Note: This system is referenced to Neutral
3x 71M6xx3
Pulse Transformers
AMR
IR
HOST
MUX and ADC
IADC0
IADC1
}IN*
VADC10 (VC)
IADC6
IADC7
}IC
VADC9 (VB)
IADC4
IADC5
}IB
VADC8 (VA)
IADC2
IADC3
}IA
V3P3A V3P3SYS GNDA GNDD
PWR MODE
CONTROL
WAKE-UP
71M6543F/ REGULATOR
71M6543G
VBAT
VBAT_RTC
TEMPERATURE
SENSOR
BATTERY
MONITOR
VREF
SERIAL PORTS
TX
RX
MODUL- RX
ATOR TX
POWER FAULT
COMPARATOR
SPI INTERFACE
RAM
COMPUTE
ENGINE
FLASH
MEMORY
MPU
RTC
TIMERS
ICE
COM0...5
SEG
SEG/DIO
LCD DRIVER
DIO, PULSES
DIO
V3P3D
OSCILLATOR/
PLL XIN
XOUT
*IN = Neutral Current
9/17/2010
BATTERY
RTC
BATTERY
LCD DISPLAY
8888.8888
PULSES,
DIO
I2C or µWire
EEPROM
32 kHz
Single Converter Technology is a registered trademark of Maxim Integrated
Products, Inc.
MICROWIRE is a registered trademark of National Semiconductor Corp.
FEATURES
0.1% Typical 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)
128KB Flash, 5KB RAM (71M6543G)
Up to Four Pulse Outputs with Pulse Count
Four-Quadrant Metering, Phase Sequencing
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)
I2C/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
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-5375; Rev 2; 10/13



71M6543G
71M6543F/71M6543G Data Sheet
Table of Contents
1 Introduction ....................................................................................................................................... 10
2 Hardware Description....................................................................................................................... 11
2.1 Hardware Overview ................................................................................................................... 11
2.2 Analog Front-End (AFE) ............................................................................................................ 12
2.2.1 Signal Input Pins ............................................................................................................ 13
2.2.2 Input Multiplexer............................................................................................................. 14
2.2.3 Delay Compensation ..................................................................................................... 19
2.2.4 ADC Pre-Amplifier ......................................................................................................... 20
2.2.5 A/D Converter (ADC) ..................................................................................................... 20
2.2.6 FIR Filter ........................................................................................................................ 20
2.2.7 Voltage References ....................................................................................................... 20
2.2.8 71M6xx3 Isolated Sensor Interface ............................................................................... 22
2.3 Digital Computation Engine (CE) ............................................................................................... 25
2.3.1 CE Program Memory ..................................................................................................... 25
2.3.2 CE Data Memory ........................................................................................................... 25
2.3.3 CE Communication with the MPU ................................................................................. 25
2.3.4 Meter Equations............................................................................................................. 26
2.3.5 Real-Time Monitor (RTM) .............................................................................................. 26
2.3.6 Pulse Generators ........................................................................................................... 26
2.3.7 CE Functional Overview ................................................................................................ 28
2.4 80515 MPU Core ....................................................................................................................... 30
2.4.1 Memory Organization and Addressing .......................................................................... 30
2.4.2 Special Function Registers (SFRs)................................................................................ 32
2.4.3 Generic 80515 Special Function Registers ................................................................... 33
2.4.4 Instruction Set ................................................................................................................ 35
2.4.5 UARTs ........................................................................................................................... 35
2.4.6 Timers and Counters ..................................................................................................... 38
2.4.7 WD Timer (Software Watchdog Timer) ......................................................................... 39
2.4.8 Interrupts........................................................................................................................ 39
2.5 On-Chip Resources ................................................................................................................... 46
2.5.1 Physical Memory............................................................................................................ 46
2.5.2 Oscillator ........................................................................................................................ 48
2.5.3 PLL and Internal Clocks................................................................................................. 49
2.5.4 Real-Time Clock (RTC) ................................................................................................. 49
2.5.5 71M6543 Temperature Sensor...................................................................................... 53
2.5.6 71M6xx3 Temperature Sensor ...................................................................................... 56
2.5.7 71M6543 Battery Monitor .............................................................................................. 56
2.5.8 71M6xx3 VCC Monitor................................................................................................... 56
2.5.9 UART and Optical Interface........................................................................................... 56
2.5.10 Digital I/O and LCD Segment Drivers ............................................................................ 57
2.5.11 EEPROM Interface ........................................................................................................ 65
2.5.12 SPI Slave Port................................................................................................................ 67
2.5.13 Hardware Watchdog Timer............................................................................................ 71
2.5.14 Test Ports (TMUXOUT and TMUX2OUT Pins) ............................................................. 72
3 Functional Description ..................................................................................................................... 74
3.1 Theory of Operation ................................................................................................................... 74
3.2 Battery Modes ............................................................................................................................ 74
3.2.1 BRN Mode ..................................................................................................................... 77
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