71M6542F-IGTR/F

Overview

The 71M6542F-IGTR/F is a fourth-generation single-phase metering System-on-Chip (SoC) from Analog Devices/Maxim Integrated. It integrates a 5 MHz 8051-compatible MPU core, 128 kB Flash memory, and 5 kB RAM within a 100-LQFP package. 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 with an industrial temperature range of -40°C to +85°C, it supports I2C and UART interfaces for residential energy metering applications.

Feature Summary

• Integrates a 5 MHz 8051-compatible microprocessor unit with low-power real-time clock and LCD driver capabilities.
• Utilizes Single Converter Technology featuring a 22-bit delta-sigma ADC and precision voltage reference for high-accuracy measurement.
• Includes a 32-bit computation engine and digital temperature compensation to support wide-range metering applications.
• Provides on-chip flash memory and RAM that can be programmed in the field during meter operation.

Applications

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

Procurement Notes

Verify component authenticity through authorized Analog Devices or Maxim Integrated distributors. Confirm RoHS compliance status and lead-free packaging specifications prior to procurement. Check current product lifecycle status as availability may vary by region. Ensure ESD protection protocols are followed during handling due to the surface-mount LQFP package type.

Selection Notes

Select this SoC for designs requiring integrated metrology and processing without external isolation transformers. The 128 kB Flash capacity supports complex firmware updates. Consider the 100-pin LQFP footprint for PCB layout constraints. Verify compatibility with required communication interfaces such as I2C or UART for system integration.

Part Context

This component belongs to the Teridian 71M6x01 series of fourth-generation metering SoCs. It is designed to reduce bill-of-materials costs by integrating analog and digital functions. The series supports optional isolated sensor ICs like the 71M6103 for enhanced reliability and tamper resistance in utility applications.

Replacement Considerations

Compatible variants within the same family include the 71M6541D, 71M6541F, 71M6541G, and 71M6542G. These parts share similar architectural features but may differ in memory size or specific interface configurations. Verify pinout and register compatibility before substitution.