Texas Instruments MSP430F6747AIPEUR

Overview

MSP430F6747AIPEUR from Texas Instruments is a polyphase metering SoC designed for high-accuracy energy measurement in 3-phase utility meters. It integrates four independent 24-bit sigma-delta ADCs, 256KB flash, 32KB RAM, LCD controller (320 segments), AES-128 encryption, and RTC with tamper detection - delivering <0.1% accuracy over 2000:1 dynamic range for phase current and meeting ANSI C12.20 and IEC 62053 standards.

For engineers reviewing the MSP430F6747AIPEUR datasheet, MSP430F6747AIPEUR pinout, MSP430F6747AIPEUR application, or MSP430F6747AIPEUR equivalent, key selection considerations include its 128-pin LQFP (PEU) package with 90 GPIOs, dual-supply analog/digital domains, 4-quadrant power measurement capability per phase, ultra-low-power LPM3.5 mode (0.34 µA), and support for shunt/CT/Rogowski sensor interfaces in smart meter firmware stacks.

Technical Context

The MSP430F6747AIPEUR implements a dedicated metrology subsystem with four SD24_B sigma-delta modulators feeding digital filters and energy calculation engines, enabling simultaneous voltage/current sampling across three phases plus neutral. Its CPU executes TI's Energy Measurement Software Library to compute active/reactive/apparent energy, RMS, harmonics, and power quality metrics in real time.

Dual-domain power management isolates AVCC/AVSS (analog) from DVCC/DVSS (digital), with auxiliary supplies (AUXVCC1–3) supporting external sensor biasing and reference stability. The device uses a 32-bit hardware multiplier and DMA-driven data flow to offload metrology computations from the 25-MHz CPU, ensuring deterministic timing for pulse output generation and calibration routines.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch. Compatible with standard reflow profiles and industrial PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6748AIPEUR, the MSP430F6747AIPEUR trades flash capacity for lower cost and power, while versus MSP430F6767AIPEUR it emphasizes security and communication flexibility over raw ADC channel count - making it optimal for cost-sensitive, certified revenue meters with strong firmware integrity requirements.

Availability

MSP430F6747AIPEUR is available at Aetrix Electronics and suitable for 3-phase electronic watt-hour meters, utility AMI endpoints, and industrial multi-tariff energy monitors requiring stable component supply, long-term lifecycle support, and traceable sourcing for global certification programs.

Supply support for MSP430F6747AIPEUR 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 specializing in analog, embedded processing, and connectivity technologies, with decades of leadership in metrology ICs and low-power microcontrollers.

The MSP430F67xxA family targets energy measurement and power monitoring applications including smart grid infrastructure and building automation - engineered to integrate metrology accuracy, security, and ultra-low-power operation into a single SoC.

FAQ

What is the maximum number of independent current/voltage channels supported by the MSP430F6747AIPEUR?

The MSP430F6747AIPEUR integrates four independent 24-bit sigma-delta ADCs (SD24_B), enabling simultaneous high-accuracy sampling of up to four differential analog inputs - typically configured for three phase currents and neutral current, or two phase currents plus two voltages. Each channel supports programmable gain and digital filtering within the metrology subsystem.

Does the MSP430F6747AIPEUR support hardware-accelerated encryption for secure firmware updates?

Yes, the MSP430F6747AIPEUR includes a dedicated hardware AES-128 encryption engine that operates independently of the CPU. This allows secure firmware updates, encrypted communication (e.g., DLMS/COSEM), and protected storage of calibration constants without impacting real-time metrology performance - a critical feature for ANSI C12.22 and IEC 62056-47 compliance.

What is the lowest power-consumption mode available on the MSP430F6747AIPEUR, and what functionality remains active?

The MSP430F6747AIPEUR achieves 0.34 µA in RTC mode (LPM3.5) at 3 V, where the real-time clock, tamper-detection circuitry, and 32KB of RAM remain fully powered and functional. This mode retains timekeeping and security state during AC mains failure while enabling rapid wake-up (<5 µs) for event-triggered measurements or alarm responses.

How does the MSP430F6747AIPEUR handle phase-angle errors introduced by current transformers?

The MSP430F6747AIPEUR provides digital phase correction (DPC) logic within its SD24_B subsystem, allowing real-time compensation of CT-induced phase shifts. Using calibration coefficients stored in flash, the device applies programmable delay and gain adjustments to voltage sampling paths - maintaining <0.1° phase error across temperature and load conditions per IEC 62053-22 requirements.

Is the MSP430F6747AIPEUR pin-compatible with other devices in the MSP430F67xxA family?

Yes, the MSP430F6747AIPEUR in the 128-pin LQFP (PEU) package shares identical pinout and footprint with all other PEU-packaged variants in the F674x/F676x/F677x series, including MSP430F6748AIPEUR and MSP430F6767AIPEUR. This enables hardware reuse across meter tiers while differing only in flash/RAM size, ADC count, and peripheral enablement - verified in TI's SLAS982A datasheet Table 4-1.