Texas Instruments MSP430F6779AIPEUR

Overview

MSP430F6779AIPEUR from Texas Instruments is a polyphase metering SoC designed for high-accuracy 3-phase electricity meters. It integrates seven 24-bit sigma-delta ADCs (±0.1% accuracy over 2000:1 dynamic range), AES-128 encryption, RTC with tamper detection, LCD controller (320 segments), and six eUSCI interfaces - enabling ANSI C12.20/IEC 62053-compliant utility metering with single-calibration 40–70 Hz line frequency support.

For engineers reviewing the MSP430F6779AIPEUR datasheet, MSP430F6779AIPEUR pinout, MSP430F6779AIPEUR application, or MSP430F6779AIPEUR equivalent, key selection criteria include its 128-pin LQFP package with 90 GPIOs, ultra-low-power LPM3.5 mode (0.34 µA), integrated metrology AFE, and hardware-accelerated energy calculation engine for three-phase + neutral measurement.

Technical Context

The MSP430F6779AIPEUR implements a dedicated metrology subsystem with independent SD24_B modulators per phase, supporting simultaneous sampling of voltage/current across three phases and neutral using programmable gain amplifiers and digital phase correction. Its 25-MHz CPU with 32-bit hardware multiplier executes TI's Energy Measurement Library to compute active/reactive/apparent energy, power factor, and harmonics in real time.

Digital peripherals include three-channel DMA for zero-CPU-overhead ADC data transfer, four 16-bit timers with nine capture/compare registers for pulse energy outputs and calibration timing, and dual I²C/SPI-capable eUSCI_B modules plus four UART/IrDA/SPI eUSCI_A modules - enabling concurrent HAN, PLC, and optical port communication in smart meter deployments.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch, 90 configurable I/O pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar polyphase metering applications.

Compared with MSP430F6778AIPEUR and MSP430F6769AIPEUR, the MSP430F6779AIPEUR provides the highest metrology channel count (7 SD24_B) and largest RAM (32 KB), making it optimal for neutral-inclusive 3-phase 4-wire meters requiring concurrent harmonic analysis and secure multi-tariff storage.

Availability

MSP430F6779AIPEUR is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade energy monitoring, and AMI endpoint node designs requiring stable component supply and long-term lifecycle support.

Supply support for MSP430F6779AIPEUR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions for industrial, automotive, and consumer applications.

The MSP430F6779AIPEUR belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for high-accuracy, low-power energy measurement in utility-grade smart meters and grid infrastructure.

FAQ

What is the primary metrology accuracy specification of the MSP430F6779AIPEUR?

The MSP430F6779AIPEUR achieves <0.1% energy measurement accuracy over a 2000:1 dynamic current range per phase, validated against ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.2 standards. This performance is enabled by its seven independent 24-bit sigma-delta ADCs with digital phase correction and temperature compensation - all implemented within the MSP430F6779AIPEUR silicon.

Does the MSP430F6779AIPEUR support neutral current measurement?

Yes, the MSP430F6779AIPEUR supports full 3-phase + neutral measurement using its seven SD24_B sigma-delta ADC channels. Four channels typically serve phase A/B/C voltage and neutral voltage, while the remaining three handle phase A/B/C current - all processed simultaneously by the MSP430F6779AIPEUR's metrology engine to compute cumulative energy with neutral inclusion.

How does the MSP430F6779AIPEUR manage power during AC mains failure?

The MSP430F6779AIPEUR enters LPM3 mode with LCD active at just 3 µA, allowing >10 years of operation on a CR2032 coin cell. Its automatic power-switching circuitry seamlessly transitions between AC mains, supercapacitor, and battery sources - a core capability built into the MSP430F6779AIPEUR's PMM module to maintain RTC, memory retention, and tamper logging during outages.

Which communication interfaces are integrated into the MSP430F6779AIPEUR?

The MSP430F6779AIPEUR integrates six enhanced Universal Serial Communication Interfaces: four eUSCI_A modules supporting UART, IrDA, and SPI; and two eUSCI_B modules supporting I²C and SPI. These enable concurrent connections to optical probes (UART), PLC modems (SPI), and home area networks (I²C) - all natively supported by the MSP430F6779AIPEUR without external level shifters or protocol converters.

Is hardware-based encryption available on the MSP430F6779AIPEUR?

Yes, the MSP430F6779AIPEUR includes a dedicated hardware AES-128 encryption module that operates independently of the CPU. This allows secure firmware updates, encrypted tariff data storage, and AMI payload protection without impacting metrology computation - a verified feature of the MSP430F6779AIPEUR used in certified smart meter deployments worldwide.