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71M6543F - Energy Meter

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.

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, Phas.

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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.
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