71M6543G-IGT/F

Overview

The 71M6543G-IGT/F is a three-phase metering System on Chip (SoC) manufactured by Analog Devices Inc./Maxim Integrated. It integrates an 80515 user MPU core with 128 kB Flash and 5 kB SRAM. The device features four current sensor inputs and three voltage sensor inputs, supporting CT, shunt, and Rogowski coil sensors. It provides ±0.1% accuracy over a 2000:1 range and includes a Real-Time Clock (RTC). The SoC drives a 336-segment LCD display via 51 GPIOs and offers two UART interfaces. It operates within a -40°C to +85°C temperature range in an LQFP-100 package.

Feature Summary

• Integrates a 5 MHz 8051-compatible MPU core with flash memory and an LCD driver for standalone operation.
• Utilizes Single Converter Technology with a 22-bit delta-sigma ADC for high-precision polyphase metering.
• Supports multiple current sensor types including CTs, shunts, and Rogowski coils without external isolation transformers.

Applications

• Three-phase residential and commercial electricity meters
• Polyphase energy monitoring systems
• Smart grid metering infrastructure

Procurement Notes

Verify the specific suffix 'IGT/F' against the manufacturer's latest datasheet to confirm lead-free status and tape-and-reel packaging configuration. Confirm availability as product lifecycles may vary. Ensure compatibility with existing PCB footprints for the LQFP-100 package during integration planning.

Selection Notes

Select this component for applications requiring integrated three-phase metrology with minimal external components. The inclusion of an RTC and LCD driver reduces bill-of-materials complexity. Verify that the 128 kB program memory suffices for application firmware requirements before finalizing the design.

Part Context

This part belongs to the 71M654x series of fourth-generation single and polyphase metering SoCs. These devices are designed to replace traditional discrete metering solutions by integrating analog front-end processing with digital computation engines. The series supports compliance with international standards such as IEC 62053 and ANSI C12.20.

Replacement Considerations

The 71M6542G-IGT/F is a documented single-phase variant within the same family. Cross-referencing with the 71M6543GT is necessary to ensure functional equivalence for three-phase applications. Verify pinout compatibility if substituting with other members of the 71M654x series.