71M6541FT-IGT/F

Overview

The 71M6541FT-IGT/F is a Teridian fourth-generation single-phase metering System on Chip (SoC) from Maxim Integrated. It integrates a 5MHz 8051-compatible MPU core, low-power RTC with digital temperature compensation, flash memory, and an LCD driver. The device utilizes Single Converter Technology featuring a 22-bit delta-sigma ADC, three analog inputs, precision voltage reference, and a 32-bit computation engine. It operates at 3.3V within a -40°C to +85°C range, housed in a 100-pin LQFP package.

Feature Summary

• Integrates a 5MHz 8051-compatible microprocessor unit with flash memory and an LCD driver for system consolidation
• Employs Single Converter Technology with a 22-bit delta-sigma ADC and 32-bit computation engine for high-precision measurement
• Includes a low-power real-time clock with digital temperature compensation for accurate timekeeping
• Supports optional interfaces to isolated sensors to reduce bill of materials cost and enhance reliability

Applications

• Residential electricity meters
• Smart grid metering systems
• Prepaid energy metering applications

Procurement Notes

Verify the specific suffix 'FT' against official Maxim Integrated documentation to confirm exact pinout, memory configuration, and interface availability. Ensure the component meets required IEC 62053 or ANSI C12.20 standards for your target market. Confirm lead-free status and RoHS compliance through the manufacturer's current datasheet before finalizing procurement specifications.

Selection Notes

Select this SoC when designing single-phase metering solutions requiring high accuracy over a wide dynamic range. The integrated architecture minimizes external component count compared to discrete designs. Consider the 5MHz processing speed and available flash memory size relative to application firmware complexity. Evaluate the need for isolated sensor compatibility if magnetic tamper immunity is a critical design requirement.

Part Context

This component belongs to the Teridian 71M6x01 series of fourth-generation metering SoCs. It shares architectural similarities with the 71M6541D, 71M6541G, 71M6542F, and 71M6542G variants. The primary differentiation lies in the specific package type, memory capacity, and interface options defined by the ordering suffix. These devices are designed to support rapid development and certification of global electricity metering standards.

Replacement Considerations

Consult official cross-reference lists for direct replacements such as other variants within the 71M6541/71M6542 family. Verify that any substitute part maintains identical pin compatibility and functional specifications. Generic metering SoCs may not offer the same level of integration or certified accuracy without significant redesign.