Texas Instruments MSP430F6769IPEUR

Overview

MSP430F6769IPEUR from Texas Instruments is a polyphase metering SoC designed for revenue-grade 3-phase electronic watt-hour meters. It integrates a 25-MHz ultra-low-power CPU, six 24-bit sigma-delta ADCs (SD24_B), a 10-bit system ADC, LCD controller (320-segment), AES-128 encryption engine, and seven communication interfaces - all in a 128-pin LQFP package. It delivers <0.1% energy measurement accuracy over 2000:1 dynamic range and meets ANSI C12.20 and IEC 62053 standards.

For engineers reviewing the MSP430F6769IPEUR datasheet, MSP430F6769IPEUR pinout, MSP430F6769IPEUR application, or MSP430F6769IPEUR equivalent, key selection criteria include its six-channel SD24_B ADC architecture, RTC with crystal offset calibration, pulse output pins for active/reactive energy calibration, low-power modes (LPM3.5: 0.34 µA), and support for current transformers, Rogowski coils, and shunt sensors in utility metering systems.

Technical Context

The MSP430F6769IPEUR implements a dedicated metering subsystem using TI's 24-bit sigma-delta modulator technology with differential inputs, programmable gain, and digital phase correction for CT-based current sensing. Its SD24_B module supports up to six independent 24-bit converters with internal reference and AC performance optimized for 40–70 Hz line frequencies using single-point calibration.

It executes TI's certified energy measurement software library directly on-chip, performing real-time four-quadrant power calculation, cumulative and per-phase energy integration, temperature-compensated metrology, and tariff management - all without external co-processors. The device uses dual supply domains (AVCC/DVCC) and auxiliary supplies (AUXVCC1–3) to isolate analog metrology paths from digital noise.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, industrial temperature grade (–40°C to +85°C). Pinout validated per TI SLAS768E Rev. E (2018), Table 4-1 and Figure 4-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6768IPEUR, the MSP430F6769IPEUR provides double the RAM and integrated AES-128 for secure firmware updates, while MSP430F6779IPEUR adds a seventh SD24_B channel for enhanced neutral current analysis - making MSP430F6769IPEUR the optimal balance of security, memory, and metrology capability for Class 0.2 revenue meters.

Availability

MSP430F6769IPEUR is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade energy monitoring, and AMI gateway node development requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.

Supply support for MSP430F6769IPEUR 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 specializing in analog and embedded processing technologies, with leadership in low-power microcontrollers and precision metrology solutions.

The MSP430F676x family was engineered specifically for polyphase revenue metering - integrating metrology-grade ADCs, secure processing, and ultra-low-power operation to replace multi-chip meter designs with a single, certified SoC.

FAQ

What is the maximum number of SD24_B converters supported by the MSP430F6769IPEUR?

The MSP430F6769IPEUR integrates six independent 24-bit sigma-delta ADCs (SD24_B) with differential inputs, programmable gain, and digital phase correction - sufficient for simultaneous voltage and current sampling across three phases plus neutral in 3-phase 4-wire configurations. This matches the specification confirmed in TI's SLAS768E Device Comparison Table 3-1.

Does the MSP430F6769IPEUR include hardware AES encryption?

Yes, the MSP430F6769IPEUR includes a dedicated hardware AES-128 encryption module that accelerates cryptographic operations for secure firmware updates, tariff data protection, and consumption log signing - eliminating software-only implementations vulnerable to side-channel attacks. This is explicitly listed in the "Features" section of the SLAS768E datasheet.

What package type and pin count does the MSP430F6769IPEUR use?

The MSP430F6769IPEUR is housed in a 128-pin LQFP package (orderable code PEU), with 20 mm × 14 mm body dimensions and 0.5 mm pin pitch. This package provides 90 general-purpose I/O pins and is validated for industrial temperature operation (–40°C to +85°C), as documented in TI's SLAS768E Section 8 and Device Information table.

Which communication interfaces are available on the MSP430F6769IPEUR?

The MSP430F6769IPEUR features six enhanced universal serial communication interfaces: four eUSCI_A modules configurable as UART or SPI, and two eUSCI_B modules configurable as SPI or I²C. These support concurrent HAN (e.g., PLC), WAN (e.g., LTE-M), and local debug channels - all confirmed in Table 3-1 and Section 1.1 of SLAS768E.

What low-power modes does the MSP430F6769IPEUR support, and what are their typical currents?

The MSP430F6769IPEUR supports multiple low-power modes including LPM3 (2.1 µA at 3 V), LPM3.5 (RTC mode, 0.34 µA at 3 V), and LPM4.5 (shutdown mode, 0.18 µA at 3 V). These values are measured with LCD off and core retention enabled, per Section 5.5 of SLAS768E - critical for battery-backed meter operation during AC mains failure.