Texas Instruments MSP430F6747IPEU

Overview

MSP430F6747IPEU from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring four 24-bit sigma-delta ADCs, 256KB flash, 32KB RAM, and 90 GPIO in a 128-pin LQFP package. It delivers <0.1% energy measurement accuracy over 2000:1 dynamic range and meets ANSI C12.20 and IEC 62053 standards for revenue-grade utility metering.

For engineers reviewing the MSP430F6747IPEU datasheet, MSP430F6747IPEU pinout, MSP430F6747IPEU application, or MSP430F6747IPEU equivalent, key selection criteria include its integrated SD24_B ADC count, LCD driver capability (320 segments), ultra-low-power RTC mode (0.34 µA), AES-128 encryption module, and support for current transformers, Rogowski coils, or shunt-based sensing in 3-phase+neutral configurations.

Technical Context

The MSP430F6747IPEU implements a dedicated metering architecture with four independent 24-bit sigma-delta modulators feeding into a hardware energy calculation engine, enabling simultaneous phase A/B/C/neutral power and energy computation. Its 25-MHz CPU with 32-bit multiplier executes TI's certified energy measurement software library without external co-processing.

It integrates dual power domains (AVCC/DVCC), auxiliary supplies (AUXVCC1–3) for backup subsystem operation, and configurable eUSCI modules supporting up to four UART, six SPI, or two I²C interfaces - all operating under strict low-power constraints including LPM3.5 (0.34 µA) and LPM4.5 (0.18 µA) modes.

Key Specifications

Pinout & Package

128-pin LQFP (PEU) package, 20 mm × 14 mm body size, industrial temperature range (–40°C to +85°C). Pin functions validated per TI SLAS768E datasheet Section 4.1–4.2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6748IPEU, the MSP430F6747IPEU trades flash capacity for higher RAM - optimizing for real-time accumulation buffers over firmware extensibility; versus MSP430F6767IPEU, it reduces SD24_B count to lower cost while retaining full 3-phase+neutral metrology capability.

Availability

MSP430F6747IPEU is available at Aetrix Electronics and suitable for smart grid revenue meters, industrial energy monitors, and AMI endpoint nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.

Supply support for MSP430F6747IPEU 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, with leadership in low-power microcontrollers and precision metrology ICs.

The MSP430F674x family is designed specifically for cost-sensitive, high-accuracy polyphase electricity meters - integrating metrology, security, display, and communication peripherals into a single SoC to minimize external components and certification effort.

FAQ

What is the maximum number of differential current inputs supported by the MSP430F6747IPEU?

The MSP430F6747IPEU supports exactly four differential sigma-delta input channels (SD0–SD3), each with programmable gain and offset calibration. These are intended for phase A, B, C, and neutral current sensing in 3-phase 4-wire metering topologies - confirmed in TI SLAS768E Table 3-1 and Section 5.49.

Does the MSP430F6747IPEU include hardware AES encryption?

Yes, the MSP430F6747IPEU integrates a dedicated hardware AES-128 module that operates independently of the CPU. This enables secure firmware updates and encrypted AMI communication without consuming CPU cycles or increasing latency - explicitly stated in the "Features" section of the SLAS768E datasheet.

What is the standby current consumption of the MSP430F6747IPEU in LPM3 mode?

The MSP430F6747IPEU consumes 2.1 µA at 3 V in LPM3 (standby) mode with RTC disabled but I/Os and RAM retained. This value is specified in the "Features" section of SLAS768E and verified in Section 5.5 - critical for battery-backed operation during mains failure.

Can the MSP430F6747IPEU drive a 320-segment LCD directly?

Yes, the MSP430F6747IPEU includes an integrated LCD_C peripheral supporting up to 320 segments with built-in contrast control and charge pump. No external LCD controller or bias generator is required - confirmed in the "Features" list and Section 5.46–5.47 of SLAS768E.

What package type and pin count does the MSP430F6747IPEU use?

The MSP430F6747IPEU uses a 128-pin LQFP package designated "PEU", with 20 mm × 14 mm body dimensions and 0.4 mm lead pitch. This is documented in the Device Information table (page 2) and Figure 4-1 of SLAS768E.