Texas Instruments MSP430F6748IPEU

Overview

MSP430F6748IPEU from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, integrating a 25-MHz ultra-low-power MCU, four 24-bit sigma-delta ADCs, LCD controller (320 segments), AES-128 encryption, and seven communication interfaces. It delivers <0.1% energy measurement accuracy over 2000:1 dynamic range and meets ANSI C12.20 and IEC 62053 standards in utility metering applications.

For engineers reviewing the MSP430F6748IPEU datasheet, MSP430F6748IPEU pinout, MSP430F6748IPEU application, or MSP430F6748IPEU equivalent, key selection criteria include its 512KB flash/16KB RAM configuration, 128-pin LQFP package with 90 GPIOs, SD24_B ADC channel count, RTC tamper protection, and support for shunt/CT/Rogowski sensor inputs in revenue-grade meter designs.

Technical Context

The MSP430F6748IPEU implements a dedicated metering subsystem with four independent 24-bit sigma-delta modulators feeding SD24_B converters, each supporting differential inputs and programmable gain. Its real-time clock includes crystal offset calibration and temperature compensation, while the backup subsystem (AUXVCC1–AUXVCC3) enables <0.34 µA RTC mode operation during mains failure.

Power management integrates PMM with BOR, SVS, and SVM circuits across multiple voltage domains (VCORE, DVCC, AVCC, VASYS, VDSYS), enabling seamless transition between active (2.9 mW @ 10 MHz/3 V), LPM3 (2.1 µA), LPM3.5 (0.34 µA), and LPM4.5 (0.18 µA) modes - critical for battery-backed meter longevity and rapid wake-up (<5 µs).

Key Specifications

Pinout & Package

128-pin LQFP (PEU) package with 90 general-purpose I/O pins, dual analog supply domains (AVCC/AVSS, VASYS), auxiliary power rails (AUXVCC1–AUXVCC3), dedicated SD24_B analog input pairs (SD0P0/SD0N0 through SD3P0/SD3N0), LCD segment/common drivers (COM0–COM7, S0–S39), and JTAG/SBW debug interface (TEST, RST/NMI, TCK/TMS/TDI/TDO).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6747IPEU, the MSP430F6748IPEU provides double flash capacity for advanced firmware features without RAM trade-off; compared with MSP430F6768IPEU, it reduces SD24_B channel count to optimize cost while retaining full metering functionality for standard 3-phase+neutral configurations.

Availability

MSP430F6748IPEU is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade energy monitoring, and AMI endpoint node development requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MSP430F6748IPEU 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 delivering analog and embedded processing solutions for industrial, automotive, and consumer applications.

The MSP430F6748IPEU belongs to TI's polyphase metering SoC product line, engineered specifically for revenue-grade 3-phase watt-hour meters that demand metrological accuracy, ultra-low-power operation, and integrated security - minimizing external components and system-level calibration effort.

FAQ

What is the maximum number of SD24_B converters supported by the MSP430F6748IPEU?

The MSP430F6748IPEU integrates exactly four 24-bit sigma-delta converters (SD24_B) - sufficient for simultaneous measurement of three phase currents, neutral current, and one auxiliary voltage channel. This matches the device's specification in Table 3-1 of SLAS768E and distinguishes it from the 6-channel MSP430F676x and 7-channel MSP430F677x families.

Does the MSP430F6748IPEU support hardware AES encryption?

Yes, the MSP430F6748IPEU includes a dedicated hardware AES-128 encryption module that operates independently of the CPU, enabling secure firmware updates and encrypted communication without impacting real-time metering performance or increasing power consumption.

What package type and pin count does the MSP430F6748IPEU use?

The MSP430F6748IPEU uses a 128-pin LQFP package designated "PEU", measuring 20 mm × 14 mm, with 90 usable I/O pins. This is confirmed in the Device Information table (Section 1.3) and Figure 4-1 of the SLAS768E datasheet.

What is the standby current consumption of the MSP430F6748IPEU in LPM3 mode?

The MSP430F6748IPEU draws 2.1 µA in LPM3 mode at 3 V, as specified in Section 1.1 Features and verified in Section 5.5 of SLAS768E. This enables extended battery backup operation during AC mains failure while retaining RAM contents and enabling sub-5-µs wake-up.

Which communication interfaces are available on the MSP430F6748IPEU?

The MSP430F6748IPEU provides six enhanced universal serial communication interfaces (eUSCI), configurable as four UARTs, six SPIs, or two I²C ports - totaling six independent serial peripherals. This is documented in Section 1.1 Features and Table 3-1 of SLAS768E.