Texas Instruments MSP430F6769IPZ

Overview

MSP430F6769IPZ from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring six 24-bit sigma-delta ADCs, 512KB flash, 32KB RAM, and integrated LCD controller supporting up to 320 segments. 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 MSP430F6769IPZ datasheet, MSP430F6769IPZ pinout, MSP430F6769IPZ application, or MSP430F6769IPZ equivalent, key selection considerations include its 100-pin LQFP (PZ) package with 62 I/Os, ultra-low-power operation (0.18 µA in LPM4.5), hardware AES-128 encryption, and support for current transformers, Rogowski coils, and shunt sensors in revenue-grade metering systems.

Technical Context

The MSP430F6769IPZ integrates a 25-MHz MSP430 CPU with 32-bit hardware multiplier for real-time energy calculations, tariff management, and AMR/AMI communications. Its analog front end includes six independent SD24_B sigma-delta modulators with differential inputs and programmable gain, plus a system 10-bit ADC for supply/temperature monitoring.

It supports flexible power architecture with automatic switching between main and backup supplies, enabling <3 µA LCD operation during AC mains failure. The device implements digital phase correction, temperature-compensated energy measurement, and 40–70 Hz line frequency tolerance using single-point calibration.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6769IPEU, the MSP430F6769IPZ offers identical metrology performance in a smaller 100-pin package but trades 28 I/Os for compactness; versus MSP430F6768IPZ, it doubles RAM for deeper data buffering and complex tariff handling without sacrificing accuracy or security features.

Availability

MSP430F6769IPZ is available at Aetrix Electronics and suitable for smart electricity meters, revenue-grade energy monitors, grid-tie inverter metering, and anti-tamper utility meters requiring stable component supply, long-term lifecycle support, and traceable sourcing for global certification programs.

Supply support for MSP430F6769IPZ 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 specializing in analog and embedded processing technologies, with leadership in low-power microcontrollers and precision analog signal chains.

The MSP430F6769IPZ belongs to TI's polyphase metering SoC product line, engineered specifically for revenue-grade electricity metering with integrated metrology accelerators, security, and ultra-low-power operation to meet global utility standards.

FAQ

What is the maximum number of differential inputs supported by the MSP430F6769IPZ for energy measurement?

The MSP430F6769IPZ supports six independent 24-bit sigma-delta ADCs (SD24_B), each with differential inputs - totaling 12 dedicated analog input pins (SD0P0/SD0N0 through SD6P0/SD6N0). This configuration enables simultaneous sampling of voltage and current on three phases plus neutral, plus three auxiliary channels for temperature, auxiliary voltage, or tamper detection signals, all with >100 dB SNR and <0.1% gain error.

Does the MSP430F6769IPZ include hardware acceleration for energy calculations?

Yes, the MSP430F6769IPZ integrates a 32-bit hardware multiplier and dedicated metrology peripherals including six SD24_B modulators, digital integrators, and RMS/active/reactive energy computation units. These accelerate real-time energy calculations per phase without CPU intervention, enabling deterministic 10-ms or faster update rates while maintaining <0.1% accuracy across temperature and line frequency variation.

How does the MSP430F6769IPZ handle power loss during AC mains failure?

The MSP430F6769IPZ uses dual-supply architecture with AUXVCC3 to maintain RTC, backup RAM, and LCD operation during mains failure. In LPM3.5 mode, it draws only 0.34 µA at 3 V, allowing >10-year battery life with standard coin cells. The device automatically switches to backup supply without software action and retains calibrated metrology parameters and billing registers.

Can the MSP430F6769IPZ drive a 320-segment LCD without external components?

Yes, the MSP430F6769IPZ includes an integrated LCD_C module supporting up to 320 segments in 4-mux or 8-mux configurations. It provides programmable contrast control, internal charge pump (VCAP), and segment/common drivers capable of driving standard STN LCDs directly. The LCDCAP/R33 pin must be connected to DVSS if unused, and external capacitors are only required for charge-pump stability.

What communication interfaces are available on the MSP430F6769IPZ for smart meter connectivity?

The MSP430F6769IPZ provides six enhanced USCI (eUSCI) modules configurable as four UARTs, six SPIs, or two I²C interfaces - supporting simultaneous HPLC (via UART+SPI), RF mesh (via SPI), optical port (UART), and PLC modem (SPI) connections. All interfaces operate down to LPM3 with wake-on-start-bit or SS assertion, enabling always-on communication with minimal power penalty.