Texas Instruments MSP430F6765IPEUR

Overview

MSP430F6765IPEUR from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring six 24-bit sigma-delta ADCs, 128KB flash, 16KB RAM, and <0.1% energy measurement accuracy over 2000:1 dynamic range at 40–70 Hz line frequency. It integrates LCD driver (320 segments), AES-128 encryption, RTC with temperature compensation, and supports current transformers, Rogowski coils, or shunt sensors.

For engineers reviewing the MSP430F6765IPEUR datasheet, MSP430F6765IPEUR pinout, MSP430F6765IPEUR application, or MSP430F6765IPEUR equivalent, key selection criteria include its 128-pin LQFP package, dual auxiliary supply support (AUXVCC1/AUXVCC2), SD24_B converter count, low-power modes (LPM3.5: 0.34 µA), and compliance with ANSI C12.20 and IEC 62053 standards.

Technical Context

The MSP430F6765IPEUR implements a dedicated metering subsystem with six independent 24-bit sigma-delta modulators (SD24_B) for simultaneous phase/neutral voltage and current sampling, plus a system 10-bit ADC for supply/temperature monitoring. Its 25-MHz CPU with 32-bit hardware multiplier executes TI's certified energy measurement library in real time.

It features seven eUSCI modules configurable as UART, SPI, or I²C interfaces, four 16-bit timers with nine capture/compare registers, and a segmented LCD controller supporting contrast control and static/dynamic drive - all operating within –40°C to 85°C industrial temperature range and 1.8–3.6 V supply.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch, with 90 general-purpose I/O pins and dedicated analog power/ground separation (AVCC/AVSS1/AVSS2, VASYS1/VASYS2, VDSYS1/VDSYS2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6765IPEUR, the F6766IPEUR offers headroom for feature-rich firmware updates, while the F6745IPEUR reduces analog front-end complexity and cost - both share identical package, pinout, and low-power architecture for drop-in layout reuse where analog channel count permits.

Availability

MSP430F6765IPEUR is available at Aetrix Electronics and suitable for smart grid revenue metering, industrial energy monitoring, and AMI-compatible smart meter applications requiring stable component supply, long-term lifecycle support, and metrology-grade certification traceability.

Supply support for MSP430F6765IPEUR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on energy efficiency, reliability, and system-level integration.

The MSP430F676x family is designed specifically for polyphase electricity metering - integrating metrology-grade ADCs, real-time computation, security, and display drivers into a single ultra-low-power SoC to replace multi-chip meter designs.

FAQ

What is the maximum number of simultaneous analog input channels supported by the MSP430F6765IPEUR?

The MSP430F6765IPEUR supports six independent 24-bit sigma-delta ADCs (SD24_B), each with differential inputs - enabling up to 12 analog input terminals (e.g., three phase currents, three phase voltages, neutral current, neutral voltage). The system 10-bit ADC adds six more channels, but those are not metrology-grade and serve auxiliary monitoring functions. All SD24_B channels operate concurrently for synchronized sampling.

Does the MSP430F6765IPEUR include hardware acceleration for energy calculations?

Yes, the MSP430F6765IPEUR includes a 32-bit hardware multiplier unit tightly coupled to its 25-MHz CPU, enabling cycle-efficient execution of TI's certified energy measurement library. This hardware acceleration is essential for real-time active/reactive/apparent energy, RMS, and power factor calculations across all phases without external DSP.

What are the key power supply domains required for proper operation of the MSP430F6765IPEUR?

The MSP430F6765IPEUR requires three distinct supply domains: AVCC/AVSS1/AVSS2 for analog subsystems (SD24_B, VREF), DVCC/DVSS1/DVSS2 for digital core and I/O, and AUXVCC1/AUXVCC2 for backup subsystem (RTC, tamper detection, backup RAM). VASYS1/VASYS2 and VDSYS1/VDSYS2 must be externally shorted per TI design guidelines to ensure correct internal regulator operation.

How does the MSP430F6765IPEUR achieve compliance with ANSI C12.20 and IEC 62053 standards?

The MSP430F6765IPEUR achieves compliance through its <0.1% energy measurement accuracy over 2000:1 dynamic range, four-quadrant computation, digital phase correction, temperature compensation, and single-point calibration across 40–70 Hz. TI provides certified energy measurement software libraries and reference designs (e.g., EVM430-F6779) validated against these standards - no additional external components are required to meet Class 0.2/0.5S requirements.

Is the MSP430F6765IPEUR pin-compatible with other devices in the MSP430F676x family?

Yes, all MSP430F676x devices in the 128-pin LQFP (PEU) package - including MSP430F6765IPEUR, MSP430F6766IPEUR, and MSP430F6767IPEUR - share identical pinouts and mechanical footprint. Differences are limited to internal resources (flash/RAM/SD24_B count), making them hardware-compatible for PCB reuse across performance tiers.