78M6618-M/F/P1

Overview

The 78M6618-M/F/P1 is a Metering System on a Chip (SoC) designed for single-phase power and energy measurement. It integrates an 80515 core, 128 kB Flash program memory, and 4 kB data RAM. The device features a 21-bit ADC resolution and supports up to eight single-phase AC outlets. Operating at a maximum clock frequency of 5 MHz with a 3.3 V supply, it utilizes a QFN-68 package. Communication interfaces include SPI and UART.

Feature Summary

• Integrates an 80515 user MPU core with a dedicated signal processing compute engine for efficient metering calculations.
• Provides independent monitoring and measurement capabilities for up to eight single-phase AC outlets within a single integrated circuit.
• Supports multiple host interface options including SPI and UART for flexible system integration.

Applications

• Single-phase power distribution units
• Multi-outlet energy monitoring systems
• Smart metering infrastructure

Procurement Notes

Verify current availability status as the component may be subject to limited supply or discontinuation. Confirm that the specific suffix matches required pinout and functional specifications. Ensure compatibility with existing firmware architectures given the 80515 core integration. Check for alternative sourcing channels if standard distributors report unavailability.

Selection Notes

Select this SoC for applications requiring high channel density in single-phase environments. The integrated compute engine reduces external processor load. Verify that the 21-bit ADC resolution meets accuracy requirements. Ensure the QFN-68 package fits the target PCB layout constraints.

Part Context

This component belongs to the Teridian 78M6618 series of octal power and energy measurement ICs. It is part of Analog Devices' portfolio of metering solutions, previously under Maxim Integrated. The series targets cost-effective, high-channel-count energy monitoring applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer obsolescence notices for potential lifecycle alternatives.