Texas Instruments MSP430F6748AIPEU

Overview

MSP430F6748AIPEU from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring four independent 24-bit sigma-delta ADCs with <0.1% accuracy over 2000:1 dynamic range, 512KB flash/16KB RAM, and integrated LCD controller supporting up to 320 segments.

For engineers reviewing the MSP430F6748AIPEU datasheet, MSP430F6748AIPEU pinout, MSP430F6748AIPEU application, or MSP430F6748AIPEU equivalent, key selection criteria include metrology-grade ADC channel count, RTC tamper detection, AES-128 encryption support, and LQFP-128 package compatibility with energy measurement reference designs.

Technical Context

This device implements a dedicated metrology subsystem with four SD24_B converters for simultaneous voltage/current sampling across three phases plus neutral, paired with digital phase correction and temperature-compensated energy calculation firmware. Its CPU executes TI's Energy Measurement software library to compute active/reactive power, RMS, harmonics, and tariff-based kWh/kvarh.

The architecture integrates six eUSCI modules (four UART/IrDA/SPI-capable, two SPI/I²C-capable), three-channel DMA, and hardware AES-128 for secure firmware updates and data transmission-enabling ANSI C12.20 and IEC 62053 compliance without external co-processors.

Key Specifications

Pinout & Package

128-pin LQFP (PEU) package, 20 mm × 14 mm body size, with 90 usable I/O pins. Pin functions include dedicated SD24_B analog inputs (SD0P0/SD0N0 through SD3P0/SD3N0), pulse output pins (Sx, COMx), RTC tamper detect (RST/NMI/SBWTDIO), and six eUSCI interfaces mapped across Ports P2–P5.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6747AIPEU, the MSP430F6748AIPEU offers double flash capacity for advanced tariff scheduling and firmware resilience; versus MSP430F6768AIPEU, it trades two SD24_B channels for lower system cost while retaining full 3-phase+neutral metrology capability.

Availability

MSP430F6748AIPEU is available at Aetrix Electronics and suitable for smart electricity meters, revenue-grade submeters, and grid edge monitoring nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.

Supply support for MSP430F6748AIPEU 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.

The MSP430F6748AIPEU belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for high-accuracy, ultra-low-power energy measurement in utility-grade smart meters and grid infrastructure.

FAQ

What metrology standards does the MSP430F6748AIPEU support?

The MSP430F6748AIPEU meets or exceeds ANSI C12.20 Class 0.2 and IEC 62053-21/22/31 standards for active and reactive energy measurement. Its <0.1% accuracy over 2000:1 dynamic range, digital phase correction, and temperature-compensated calculations are validated per these specifications. The MSP430F6748AIPEU achieves this with its four 24-bit sigma-delta ADCs and integrated metrology firmware stack.

Does the MSP430F6748AIPEU include hardware encryption?

Yes, the MSP430F6748AIPEU integrates a dedicated hardware AES-128 encryption module that operates independently of the CPU. This enables secure firmware updates, encrypted communication over eUSCI interfaces, and protected storage of calibration constants and keys-critical for anti-tamper compliance in prepayment meters. The MSP430F6748AIPEU uses this engine to accelerate cryptographic operations without compromising real-time metrology performance.

How many ADC channels does the MSP430F6748AIPEU have for energy measurement?

The MSP430F6748AIPEU features four independent 24-bit sigma-delta ADCs (SD24_B) optimized for metrology, plus a separate 10-bit SAR ADC (ADC10_A) with six external and two internal channels. The four SD24_B channels directly support simultaneous sampling of three-phase currents and neutral current, enabling full 4-quadrant energy calculation per phase. This configuration is fixed in the MSP430F6748AIPEU and cannot be reconfigured to more than four SD24_B inputs.

What package type and pin count does the MSP430F6748AIPEU use?

The MSP430F6748AIPEU is supplied in a 128-pin LQFP package designated "PEU", with a 20 mm × 14 mm body size and 90 general-purpose I/O pins. This package matches TI's EVM430-F6779 evaluation module and MSP-TS430PEU128 target board, ensuring direct hardware compatibility for development and production. The MSP430F6748AIPEU's pinout includes dedicated SD24_B analog inputs, LCD segment/common drivers, and six eUSCI interface signals mapped across Ports P1–P6.

Can the MSP430F6748AIPEU operate during AC mains failure?

Yes, the MSP430F6748AIPEU supports ultra-low-power operation during mains failure: in LPM3.5 (RTC-only mode), it draws just 0.34 µA at 3 V, allowing coin-cell batteries to sustain the real-time clock and critical registers for over 10 years. Its LCD controller remains functional at 3 µA in LPM3, enabling visible status indication even during extended outages. This capability is integral to the MSP430F6748AIPEU's design for utility meters requiring uninterrupted timekeeping and tamper logging.