71M6543H
Energy Meter ICs
Eliminate High-Cost Current Transformers in Electricity Meter Designs
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Part Details
- 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
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.
Applications
- Energy Meters
- Magnetic Interference Demo
Documentation
Data Sheet 1
User Guide 1
Application Note 4
Technical Articles 2
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
Evaluation Kits
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