71M6541DT-IGTR/F

Overview

The 71M6541DT-IGTR/F is a fourth-generation single-phase metering System-on-Chip (SoC) manufactured by Maxim Integrated. It integrates a 5 MHz 8051-compatible microprocessor core, a low-power real-time clock with digital temperature compensation, and 32 kB of flash memory. The device features Single Converter Technology® with a 22-bit delta-sigma ADC, three analog inputs, and a 32-bit computation engine. It operates on a 3.3 V supply within an industrial temperature range of -40°C to +85°C and is housed in a 64-pin LQFP package.

Feature Summary

• Integrates a 5 MHz 8051-compatible MPU core with 32 kB flash and 2 kB RAM for embedded control
• Utilizes Single Converter Technology® with a 22-bit delta-sigma ADC for high-precision measurement
• Includes a low-power RTC with digital temperature compensation for accurate timekeeping
• Supports optional isolated sensor interfaces to reduce bill-of-materials cost

Applications

• Residential single-phase electricity meters
• Smart grid metering systems compliant with ANSI and IEC standards
• Energy monitoring devices requiring magnetic tamper immunity

Procurement Notes

Verify the specific suffix 'DT' confirms the 32 kB flash and 2 kB RAM configuration distinct from other variants. Confirm the 'IGTR' suffix indicates tape-and-reel packaging if required for automated assembly. Ensure compatibility with the intended isolated sensor ICs from the 71M6x01 series for complete system functionality.

Selection Notes

Select this component when a single-phase metering solution requires integrated processing and high-precision analog front-end capabilities. The 32 kB flash size supports complex firmware updates and data logging. Consider the 64-pin package constraint against available PCB space compared to the 100-pin variants offering additional I/O.

Part Context

This part belongs to the Teridian 71M654x family of fourth-generation metering SoCs. It is designed to work in conjunction with Teridian's 71M6x01 series isolated sensors, enabling the use of non-isolated components like shunt resistors while maintaining isolation requirements through digital communication links.

Replacement Considerations

The 71M6541FT-IGTR/F serves as a direct functional substitute with increased memory capacity (64 kB Flash, 1 kB RAM). Verify pinout compatibility and software adaptation requirements when migrating between these variants within the same product family.