Texas Instruments MSP430F6768AIPEUR

Overview

MSP430F6768AIPEUR from Texas Instruments is a polyphase metering SoC designed for high-accuracy energy measurement in 3-phase utility meters. It integrates six 24-bit sigma-delta ADCs, a 25-MHz CPU with 32-bit multiplier, 512KB flash/16KB RAM, LCD controller (320 segments), and hardware AES-128 encryption - enabling ANSI C12.20 and IEC 62053 compliance in compact LQFP-128 packaging.

For engineers reviewing the MSP430F6768AIPEUR datasheet, MSP430F6768AIPEUR pinout, MSP430F6768AIPEUR application, or MSP430F6768AIPEUR equivalent, key selection criteria include metrology ADC channel count, RTC tamper detection, ultra-low-power LPM3.5 mode (0.34 µA), and eUSCI support for UART/I²C/SPI in smart meter communication stacks.

Technical Context

The MSP430F6768AIPEUR implements a dedicated metrology subsystem with six independent SD24_B sigma-delta modulators supporting differential inputs, programmable gain, and digital phase correction for CT-based current sensing. Its real-time clock includes crystal offset calibration and temperature compensation, while the AES-128 module operates in secure memory regions to protect firmware and metering data.

Power management supports automatic switching between AC mains and backup battery, with LCD operation at 3 µA in LPM3 during outage. The device executes TI's Energy Measurement Software Library for active/reactive energy calculation, pulse output generation, and harmonic analysis across 40–70 Hz line frequencies using single-point calibration.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PEU), 20 mm × 14 mm body, 0.5 mm pitch, 90 GPIOs including dedicated metrology analog inputs and pulse outputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6769AIPEUR, the MSP430F6768AIPEUR trades one ADC channel and half the RAM for lower unit cost while retaining full metrology accuracy and security features; versus MSP430F6767AIPEUR, it doubles flash for field-upgradable firmware and advanced diagnostics without changing PCB layout.

Availability

MSP430F6768AIPEUR is available at Aetrix Electronics and suitable for 3-phase smart metering, revenue-grade submetering, and grid-edge power quality monitoring requiring stable component supply and long-term lifecycle assurance.

Supply support for MSP430F6768AIPEUR 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 broad industrial and energy infrastructure solutions.

The MSP430F6768AIPEUR belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for high-accuracy, low-power energy measurement in utility-grade electricity meters and smart grid endpoints.

FAQ

What metrology standards does the MSP430F6768AIPEUR support out of the box?

The MSP430F6768AIPEUR supports ANSI C12.20 and IEC 62053-21/-22 compliance through its hardware metrology engine and TI Energy Measurement Software Library. Its six 24-bit sigma-delta ADCs, digital phase correction, and temperature-compensated calculations enable Class 0.2 active/reactive energy accuracy. Calibration is validated using TI's EVM430-F6779 evaluation module and EMDC software toolchain - no external components required to meet standard test conditions.

Does the MSP430F6768AIPEUR include hardware security features for firmware protection?

Yes, the MSP430F6768AIPEUR integrates hardware AES-128 encryption, password-protected RTC with tamper detection pins, and secure bootloader (BSL) with lock bits. These features allow secure firmware updates, encrypted energy log storage, and zeroization of sensitive registers upon physical tamper event - satisfying IEC 62053-31 security requirements. All cryptographic operations execute in dedicated hardware, leaving the CPU free for metrology tasks.

How many independent analog input channels does the MSP430F6768AIPEUR provide for voltage and current sensing?

The MSP430F6768AIPEUR provides six independent 24-bit sigma-delta ADC channels (SD0–SD5), each with differential inputs and programmable gain. This supports simultaneous sampling of three phase voltages, three phase currents (or neutral current), and auxiliary sensors - all with <0.1% error over 2000:1 dynamic range. Dedicated pins (e.g., SD0P0/SD0N0 through SD5P0/SD5N0) route directly to internal modulators without multiplexing delay.

What low-power modes are available on the MSP430F6768AIPEUR for battery-backed operation?

The MSP430F6768AIPEUR offers LPM3.5 (RTC active, 0.34 µA at 3 V) and LPM4.5 (shutdown, 0.18 µA) for battery backup. In LPM3.5, the RTC maintains time with crystal offset calibration and temperature compensation while retaining RAM contents. LCD remains functional at 3 µA - enabling display retention during AC mains failure without supercapacitor derating. Wake-up latency is <5 µs from any LPM mode.

Can the MSP430F6768AIPEUR drive a 320-segment LCD directly without external bias circuitry?

Yes, the MSP430F6768AIPEUR integrates a full LCD_C controller supporting up to 320 segments (8 commons × 40 segments) with programmable contrast, internal charge pump, and static/dynamic drive modes. Pins COM0–COM7 and S0–S320 map directly to LCD electrodes. No external resistors, capacitors, or bias generators are needed - reducing BOM count and board space in compact meter designs.