71M6541G
Energy Meter ICs
Industry's Most Integrated Metering SoC Product Line and Best-in-Class Accuracy Performance
Part Details
- 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
- 32KB Flash, 3KB RAM (71M6541D)
- 64KB Flash, 5KB RAM (71M6541F/42F)
- 128KB Flash, 5KB RAM (71M6541G/42G)
- Built-In Flash Security
- SPI Interface to Host 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
- 5V LCD Driver with DAC
- Up to 51 Multifunction DIO Pins
- Hardware Watchdog Timer (WDT)
- Two UARTs for IR and AMR
- IR LED Driver with Modulation
- Innovative Isolation Technology (Requires Companion 71M6xxx Sensor, also from Maxim Integrated) Eliminates Current Transformers
- Two 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
- Three Battery-Backup Modes:
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.
The 71M654x family operates over the industrial temperature range and comes in 64-pin (71M6541D/F/G) and 100-pin (71M6542F/G) lead(Pb)-free LQFP packages.
Applications
- Residential Metering, 0.5% Accuracy
- Magnetic Interference Demo
Documentation
Data Sheet 1
Reliability Data 1
User Guide 2
Application Note 1
Technical Articles 2
This is the most up-to-date revision of the Data Sheet.
Evaluation Kits
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