Texas Instruments MSP430F67761AIPEUR

Overview

MSP430F67761AIPEUR from Texas Instruments is a polyphase metering SoC designed for high-accuracy 3-phase energy measurement in utility-grade smart meters. It integrates seven 24-bit sigma-delta ADCs (±0.1% accuracy over 2000:1 dynamic range), a 25-MHz CPU with 32-bit multiplier, 256KB flash/16KB RAM, LCD controller (320 segments), and dual eUSCI modules supporting UART/I²C/SPI. It meets ANSI C12.20 and IEC 62053 standards for revenue-grade metering.

For engineers reviewing the MSP430F67761AIPEUR datasheet, MSP430F67761AIPEUR pinout, MSP430F67761AIPEUR application, or MSP430F67761AIPEUR equivalent, key selection criteria include metrology ADC channel count, RTC tamper detection, pulse output support for active/reactive energy calibration, low-power LPM3.5 mode (0.34 µA), and 128-pin LQFP package compatibility with EVM430-F6779 evaluation hardware.

Technical Context

The MSP430F67761AIPEUR implements a dedicated metrology subsystem with independent SD24_B converters per phase, enabling simultaneous 3-phase + neutral current/voltage sampling. Its analog front-end supports CT, Rogowski, and shunt sensors with digital phase correction and temperature-compensated energy calculation.

Digital architecture includes three-channel DMA, 16-bit CRC, four timers (nine capture/compare registers), and six eUSCIs-four configured as UART/IrDA/SPI (eUSCI_A0–A3) and two as SPI/I²C (eUSCI_B0–B1)-enabling concurrent communication with metrology ICs, PLC modems, and display controllers.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch, 90 GPIOs. Thermal pad not present; standard reflow profile applies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F67761AIPEUR, the MSP430F67761AIPZ offers smaller footprint but sacrifices metrology channel count and auxiliary SD inputs, while the MSP430F67661AIPEUR retains identical packaging and most peripherals but removes one SD24_B channel - impacting simultaneous multi-sensor deployment in Class 0.2 revenue meters.

Availability

MSP430F67761AIPEUR is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade submetering, grid edge monitoring, and AMI endpoint applications requiring stable component supply, long-term lifecycle support, and TI-qualified metrology performance.

Supply support for MSP430F67761AIPEUR 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, embedded processing, and connectivity technologies, with leadership in ultra-low-power microcontrollers and precision analog signal chains.

The MSP430F67761AIPEUR belongs to the MSP430™ Metrology and Monitoring MCU portfolio, engineered specifically for ANSI/IEC-compliant energy measurement systems requiring high accuracy, tamper resistance, and integrated LCD/communication peripherals.

FAQ

What metrology standards does the MSP430F67761AIPEUR meet?

The MSP430F67761AIPEUR meets or exceeds ANSI C12.20 Class 0.2 and IEC 62053-22/23 standards for active and reactive energy measurement accuracy. Its 24-bit sigma-delta ADCs achieve <0.1% error over 2000:1 dynamic range, and built-in digital phase correction ensures compliance with phase-angle accuracy requirements in both standards. The device also supports single-point calibration across 40–70 Hz line frequencies.

How many independent sigma-delta ADC channels does the MSP430F67761AIPEUR support?

The MSP430F67761AIPEUR supports seven independent 24-bit sigma-delta ADC channels (SD24_B). This enables simultaneous sampling of three phase voltages, three phase currents, and neutral current - a full 3-phase 4-wire metrology configuration without time-division multiplexing. Each channel includes programmable gain, offset calibration, and digital filtering optimized for energy measurement.

Does the MSP430F67761AIPEUR include hardware pulse outputs for energy calibration?

Yes, the MSP430F67761AIPEUR includes dedicated hardware pulse output pins for active and reactive energy. These outputs generate calibrated pulses proportional to accumulated Wh and VARh, enabling direct connection to calibration equipment without CPU intervention or firmware overhead. Pulse rate and scaling are configurable via registers in the SD24_B module.

What low-power modes are available on the MSP430F67761AIPEUR, and what is the RTC current draw?

The MSP430F67761AIPEUR offers multiple low-power modes including LPM3 (standby, 2.1 µA), LPM3.5 (RTC-only, 0.34 µA at 3 V), and LPM4.5 (shutdown, 0.18 µA). In LPM3.5, the real-time clock remains active with crystal oscillator running, preserving timekeeping and alarm functionality while minimizing battery drain - critical for >1-year backup operation on a CR2032 coin cell.

Can the MSP430F67761AIPEUR drive a 320-segment LCD directly?

Yes, the MSP430F67761AIPEUR integrates a full-featured LCD controller supporting up to 320 segments in static, 2-, 3-, or 4-mux configurations. It includes programmable contrast control, charge pump, and automatic blinking - eliminating the need for external LCD bias generators. Segments are driven via COM0–COM7 and S0–S319 pins mapped across Ports P1–P11.