71M6542G-IGT/F

Overview

The 71M6542G-IGT/F is a fourth-generation single-phase metering System on Chip (SoC) from the Teridian 71M6x01 series. It integrates a 5 MHz 8051-compatible MPU core, 128 KB Flash memory, and a low-power RTC with digital temperature compensation. The device features Single Converter Technology® with a 22-bit delta-sigma ADC, three analog inputs, and a 32-bit computation engine. Operating at 3.3 V, it supports I2C and UART interfaces within an LQFP-100 package.

Feature Summary

• Integrates a 5 MHz 8051-compatible microprocessor unit with 128 KB flash memory for code execution and data storage.
• Utilizes Single Converter Technology® featuring a 22-bit delta-sigma ADC and a dedicated 32-bit computation engine for high-precision metering calculations.
• Includes a low-power real-time clock with digital temperature compensation and an LCD driver capable of driving multiple segments per pin.

Applications

• Residential single-phase electricity meters
• Smart metering systems requiring ANSI and IEC compliance
• Metering applications utilizing isolated sensors for magnetic tamper immunity

Procurement Notes

Verify the manufacturer designation carefully, as this component appears under both Maxim Integrated and Silergy branding in distributor databases. Confirm the specific suffix 'IGT/F' corresponds to the tube packaging variant rather than the tape and reel version. Ensure the source documentation explicitly identifies the part as a metering SoC with 128 KB flash to avoid confusion with similar models in the 71M654x family.

Selection Notes

Select this component when designing single-phase metering solutions that require integrated processing, high-resolution analog-to-digital conversion, and display capabilities. The inclusion of a 32-bit computation engine and digital temperature compensation makes it suitable for applications demanding high accuracy over wide current ranges without extensive external components.

Part Context

This part belongs to the Teridian 71M6x01 series of fourth-generation single-phase metering SoCs. The series includes variants such as the 71M6541D, 71M6541F, 71M6541G, 71M6542F, and 71M6542G. These devices are designed to support various metering standards and offer optional interfaces to isolated sensors for enhanced reliability.

Replacement Considerations

Compatible substitutes within the same family include the 71M6541G and 71M6542F. Verify that alternative parts match the required flash memory size and analog input configuration before substitution.