71M6543GHT

Obsolete

Energy Meter ICs

Fourth-Generation Energy Metering ICs Deliver Industry's Highest Accuracy

Data Sheet (Rev. 7) Product Selection Table

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Overview

SoC Integration and Unique Isolation Technique Reduces BOM Cost Without Sacrificing Performance
- 0.1% Typical Accuracy Over 2000:1 Current Range
- Exceeds IEC 62053/ANSI C12.20 Standards
- Four-Quadrant Metering
- 46-64Hz Line Frequency Range with the Same Calibration
- Phase Compensation (±10° )
- Independent 32-Bit Compute Engine
- 64KB Flash, 5KB RAM (71M6543FT/71M6543HT)
- 128KB Flash, 5KB RAM (71M6543GT/71M6543GHT)
- Built-In Flash Security
- SPI Interface with Flash Program Capability
- Up to Four Pulse Outputs with Pulse Count
- 8-Bit MPU (80515), Up to 5 MIPS
- Full-Speed MPU Clock in Brownout Mode
- LCD Driver Allows Up to 6 Commons/Up to 56 Pins
- Up to 51 Multifunction DIO Pins
- Hardware Watchdog Timer (WDT)
- Two UARTs for IR and AMR
- IR LED Driver with Modulation
- I²C/MICROWIRE^® EEPROM Interface
Innovative Isolation Technology (Requires Companion 71M6xxx Sensor, also from Maxim Integrated) Eliminates Current Transformers
- Four Current Sensor Inputs with Selectable Differential Mode
- Selectable Gain of 1 or 8 for One Current Input to Support Neutral Current Shunt
- High-Speed Wh/VARh Pulse Outputs with Programmable Width
Digital Temperature Compensation Improves System Performance
- Metrology Compensation
- Accurate RTC for TOU Functions with Automatic Temperature Compensation for Crystal in All Power Modes
Power Management Extends Battery Life During Power Outages
- Three Battery-Backup Modes:
  - Brownout Mode (BRN)
  - LCD Mode (LCD)
  - Sleep Mode (SLP)
Wake-Up on Pin Events and Wake-On Timer
- 1µA in Sleep Mode