71M6521DE-IMR/F

Overview

The 71M6521DE-IMR/F is a Teridian fourth-generation single-phase metering System on Chip (SoC) manufactured by Analog Devices Inc. / Maxim Integrated. It integrates a 5MHz 8051-compatible MPU core, a low-power real-time clock with digital temperature compensation, flash memory, and an LCD driver. The device utilizes Single Converter Technology featuring a 22-bit Delta-Sigma ADC, three or four analog inputs, and a precision voltage reference. It includes a 32-bit computation engine and supports optional interfaces to isolated sensors for enhanced reliability.

Feature Summary

• Integrates a 5MHz 8051-compatible microprocessor core with flash memory and LCD driver capabilities.
• Features Single Converter Technology with a 22-bit Delta-Sigma ADC and precision voltage reference.
• Includes a low-power real-time clock with digital temperature compensation.
• Supports optional interfaces to Teridian isolated sensors for magnetic tamper immunity.

Applications

• Residential electricity metering
• Smart grid energy monitoring systems
• Single-phase utility metering applications

Procurement Notes

Verify the specific suffix IMR/F against official Analog Devices documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing firmware development tools and reference designs provided by the manufacturer for certification compliance.

Selection Notes

Select this component for applications requiring high-accuracy metering with minimal external components. The integrated 32-bit computation engine and differential inputs support advanced power management and ultra-low-power operation in active and battery modes suitable for long-life deployment.

Part Context

This part belongs to the Teridian 71M6x01 series of fourth-generation single-phase metering SoCs. These devices are designed to meet ANSI and IEC electricity metering standards worldwide, offering code development tools and demonstration code to facilitate rapid product development and certification.

Replacement Considerations

Compatible variants within the 71M6x01 family include the 71M6541D, 71M6541F, 71M6541G, 71M6542F, and 71M6542G. Verify pinout and memory configuration differences before substitution.