Texas Instruments MSP430F6748AIPEUR

Overview

MSP430F6748AIPEUR from Texas Instruments is a polyphase metering SoC designed for 3-phase energy measurement in utility-grade electricity meters. It integrates four 24-bit sigma-delta ADCs, a 25-MHz CPU with 32-bit multiplier, 512KB flash/16KB RAM, LCD controller (320 segments), AES-128 encryption, and six eUSCI interfaces (UART/I²C/SPI). It achieves <0.1% accuracy over 2000:1 dynamic range and meets ANSI C12.20 and IEC 62053 standards for revenue-grade metering.

For engineers reviewing the MSP430F6748AIPEUR datasheet, MSP430F6748AIPEUR pinout, MSP430F6748AIPEUR application, or MSP430F6748AIPEUR equivalent, key selection considerations include its 128-pin LQFP package, dedicated pulse output pins for active/reactive energy calibration, ultra-low-power RTC mode (0.34 µA), and support for shunt/CT/Rogowski sensor inputs in 3-phase 4-wire star configurations.

Technical Context

The MSP430F6748AIPEUR implements a metrology-specific signal chain: four independent SD24_B sigma-delta ADCs digitize phase voltage/current and neutral current with programmable gain, while the integrated hardware multiplier and DMA engine perform real-time energy calculations without CPU intervention. Its RTC module includes tamper detection, crystal offset calibration, and temperature compensation to maintain timekeeping integrity during mains failure.

Power management supports multiple low-power modes-including LPM3.5 (RTC active, 0.34 µA) and LPM4.5 (shutdown, 0.18 µA)-enabling battery-backed operation during AC loss. The device uses dual-domain power supplies (AVCC/DVCC) with internal regulators and requires external connection of VASYS1/VASYS2 and VDSYS1/VDSYS2 pairs for proper analog/digital system operation.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch. Requires external connection of VASYS1/VASYS2 and VDSYS1/VDSYS2 pairs for analog/digital domain coupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6748AIPEUR, the MSP430F6747AIPEU offers more RAM but less flash-suitable for simpler firmware; the MSP430F6768AIPEU provides two additional sigma-delta channels and enhanced voltage sensing-ideal for advanced 3-wire delta metering where full phase-to-phase voltage analysis is needed.

Availability

MSP430F6748AIPEUR is available at Aetrix Electronics and suitable for smart electricity meters, revenue-grade energy monitors, anti-tampering metering nodes, and low-power battery-backed metering applications requiring stable component supply and long-term lifecycle support.

Supply support for MSP430F6748AIPEUR 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 MSP430F67xxA product line was engineered specifically for revenue-grade polyphase energy measurement, integrating metrology ADCs, secure real-time clocks, and low-power processing to replace multi-chip meter designs with a single SoC.

FAQ

What is the maximum dynamic range supported by the MSP430F6748AIPEUR for accurate energy measurement?

The MSP430F6748AIPEUR supports a dynamic range of 2000:1 with <0.1% measurement error, validated per ANSI C12.20 and IEC 62053-22 standards. This performance is achieved using its four 24-bit sigma-delta ADCs with programmable gain amplifiers and digital phase correction-enabling accurate billing across light-load standby conditions and full-rated current peaks in 3-phase utility meters.

Does the MSP430F6748AIPEUR include hardware acceleration for cryptographic operations?

Yes, the MSP430F6748AIPEUR integrates a dedicated hardware AES-128 encryption module that operates independently of the CPU. This allows secure firmware updates, encrypted data logging, and protected communication without degrading real-time metrology performance-critical for compliance with utility cybersecurity mandates like NISTIR 7628.

How does the MSP430F6748AIPEUR handle power supply failure during meter operation?

The MSP430F6748AIPEUR supports ultra-low-power RTC mode (LPM3.5) drawing only 0.34 µA at 3 V, allowing continuous timekeeping and SRAM retention during AC mains failure. Its LCD driver remains functional at 3 µA in LPM3, enabling critical status display even on backup power-meeting IEC 62053-21 requirements for uninterrupted time and energy accumulation.

What communication interfaces are available on the MSP430F6748AIPEUR for smart meter connectivity?

The MSP430F6748AIPEUR provides six enhanced Universal Serial Communication Interfaces: four eUSCI_A modules configurable as UART, IrDA, or SPI (for optical ports or PLC modems), and two eUSCI_B modules supporting SPI or I²C (for EEPROM, security ICs, or sensor interfaces). All are accessible in the 128-pin LQFP package and support automatic baud-rate detection for robust HAN communication.

Can the MSP430F6748AIPEUR directly drive a 320-segment LCD without external components?

Yes, the MSP430F6748AIPEUR includes an integrated LCD_C controller supporting up to 320 segments with software-configurable bias, frame frequency, and contrast control. It drives common-electrode LCDs directly using COM0–COM7 and SEGx pins-eliminating external LCD drivers and reducing bill-of-materials cost in utility meter designs.