Texas Instruments MSP430F6769AIPEU

Overview

MSP430F6769AIPEU from Texas Instruments is a polyphase metering SoC designed for high-accuracy energy measurement in 3-phase utility meters. It integrates six independent 24-bit sigma-delta ADCs, a 25-MHz CPU with 32-bit multiplier, 512KB flash/32KB RAM, LCD controller (320 segments), and hardware AES-128 encryption - enabling ANSI C12.20 and IEC 62053-compliant metering with <0.1% error over 2000:1 dynamic range.

For engineers reviewing the MSP430F6769AIPEU datasheet, MSP430F6769AIPEU pinout, MSP430F6769AIPEU application, or MSP430F6769AIPEU equivalent, key selection considerations include its 128-pin LQFP package with 90 GPIOs, ultra-low-power RTC mode (0.34 µA), dedicated pulse output pins for active/reactive energy calibration, and support for current transformers, Rogowski coils, and shunt sensors in 3-phase 4-wire star configurations.

Technical Context

The MSP430F6769AIPEU implements a metrology-specific architecture: six SD24_B sigma-delta ADCs digitize voltage/current inputs per phase plus neutral, with digital phase correction and temperature-compensated energy calculation firmware executed on the integrated 25-MHz CPU. Its AFE supports 40–70 Hz line frequency using single-point calibration.

Digital subsystems include three-channel DMA, four 16-bit timers (nine capture/compare registers), six eUSCI modules (four UART/IrDA/SPI + two SPI/I²C), and tamper-detect RTC with crystal offset calibration - all operating across seven low-power modes including LPM3.5 (0.34 µA) and LPM4.5 (0.18 µA).

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 90 configurable I/O pins. Thermal pad not present; standard JEDEC LQFP footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6769AIPZ, the MSP430F6769AIPEU provides 28 more I/Os for expanded LCD control or extra communication interfaces; versus MSP430F6779AIPEU, it trades one sigma-delta ADC channel for lower cost while retaining identical metrology accuracy and security features.

Availability

MSP430F6769AIPEU is available at Aetrix Electronics and suitable for smart electricity meters, revenue-grade energy monitors, and AMI endpoint nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.

Supply support for MSP430F6769AIPEU 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 leader specializing in analog, embedded processing, and connectivity technologies with decades of utility metering domain expertise.

The MSP430F67xxA product line was engineered specifically for metrology and monitoring applications, integrating high-accuracy analog front-ends, ultra-low-power processing, and security features required for revenue-grade smart grid devices.

FAQ

What is the maximum number of LCD segments supported by the MSP430F6769AIPEU?

The MSP430F6769AIPEU integrates an LCD controller supporting up to 320 segments with software-configurable bias and contrast control. This enables full-feature alphanumeric and icon-based displays commonly used in Class 0.2 utility meters without requiring external segment drivers or voltage boosters.

Does the MSP430F6769AIPEU support hardware-accelerated AES encryption?

Yes, the MSP430F6769AIPEU includes a dedicated hardware AES-128 encryption module that operates independently of the CPU. This allows secure DLMS/COSEM message signing and firmware image decryption without impacting real-time metrology calculations or increasing active-mode power consumption.

How many independent sigma-delta ADC channels does the MSP430F6769AIPEU integrate?

The MSP430F6769AIPEU integrates six independent 24-bit sigma-delta ADC channels (SD24_B). Each channel supports differential inputs with programmable gain, enabling simultaneous high-accuracy sampling of voltage and current across three phases plus neutral in 3-phase 4-wire metering topologies.

What low-power modes are available on the MSP430F6769AIPEU, and what is the lowest current draw?

The MSP430F6769AIPEU offers seven low-power modes. The lowest active-retention mode is LPM4.5 (shutdown), drawing 0.18 µA at 3 V. For RTC operation with memory retention, LPM3.5 draws 0.34 µA at 3 V - enabling multi-year battery backup for time-critical metering functions.

Which communication interfaces are implemented on the MSP430F6769AIPEU, and how are they configured?

The MSP430F6769AIPEU provides six eUSCI modules: eUSCI_A0–A3 support UART, IrDA, or SPI; eUSCI_B0–B1 support SPI or I²C. All are software-configurable per instance, allowing concurrent use of UART for optical port, SPI for PLC modem, and I²C for external EEPROM or temperature sensor.