Texas Instruments MSP430F6776AIPZ

Overview

MSP430F6776AIPZ from Texas Instruments is a polyphase metering SoC designed for high-accuracy energy measurement in 3-phase utility meters. It integrates seven 24-bit sigma-delta ADCs (±0.1% accuracy over 2000:1 dynamic range), a 25-MHz CPU with 32-bit multiplier, 256KB flash/16KB RAM, LCD controller (320 segments), and hardware AES-128 encryption - all in a 100-pin LQFP package supporting ANSI C12.20 and IEC 62053 compliance.

For engineers reviewing the MSP430F6776AIPZ datasheet, MSP430F6776AIPZ pinout, MSP430F6776AIPZ application, or MSP430F6776AIPZ equivalent, key selection criteria include metrology-grade ADC performance, RTC tamper detection, multi-interface eUSCI support (UART/I²C/SPI), ultra-low-power LPM3.5 mode (0.34 µA), and integrated pulse output for active/reactive energy calibration.

Technical Context

The MSP430F6776AIPZ implements a dedicated metrology subsystem with independent SD24_B modulators per phase, enabling simultaneous 3-phase + neutral power calculation. Its analog front end supports current transformers, Rogowski coils, and shunt sensors with digital phase correction and temperature-compensated energy integration across 40–70 Hz line frequencies using single-point calibration.

Digital architecture includes three-channel DMA, four 16-bit timers (nine capture/compare registers), six eUSCI modules (four UART/IrDA/SPI-capable, two SPI/I²C-capable), and an integrated RTC with crystal offset calibration, tamper detection, and password protection - all coordinated via a unified low-power execution environment with LPM3 standby (2.1 µA) and LPM4.5 shutdown (0.18 µA).

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, 0.5 mm pitch, 62 I/O pins. Thermal pad not present; standard JEDEC-compliant footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6776AIPEU, the MSP430F6776AIPZ trades I/O count and package size for compactness and thermal efficiency in space-constrained meter housings; versus MSP430F6766AIPZ, it adds one SD24_B channel for full 3-phase + neutral compliance without sacrificing power or security features.

Availability

MSP430F6776AIPZ is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade energy monitoring, and AMI endpoint node development requiring stable component supply and long-term lifecycle assurance.

Supply support for MSP430F6776AIPZ 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The MSP430F6776AIPZ belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for high-accuracy, low-power energy measurement in utility-grade smart meters and grid-edge sensing applications.

FAQ

What metrology standards does the MSP430F6776AIPZ meet?

The MSP430F6776AIPZ meets or exceeds ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.2 accuracy requirements across its specified operating conditions. Its seven 24-bit sigma-delta ADCs deliver <0.1% error over 2000:1 dynamic range per phase, validated under 40–70 Hz line frequency with temperature compensation and digital phase correction - all confirmed in TI's SLAS982A datasheet.

Does the MSP430F6776AIPZ support tamper detection and secure firmware updates?

Yes, the MSP430F6776AIPZ integrates password-protected RTC with tamper detection (voltage, temperature, frequency, and case-open sensing), hardware AES-128 encryption for secure boot and data-at-rest protection, and memory segmentation with lock bits. These features enable compliance with ANSI C12.22 and IEC 62056-21 security mandates for utility metering applications.

What is the lowest power consumption mode of the MSP430F6776AIPZ with RTC active?

The MSP430F6776AIPZ achieves 0.34 µA in RTC mode (LPM3.5) at 3 V with 32.768-kHz crystal running and LCD disabled. This mode retains RTC time, calendar, and critical registers while allowing wake-up on alarm or external interrupt - verified in Section 5.5 of the SLAS982A datasheet.

How many independent sigma-delta ADC channels does the MSP430F6776AIPZ provide?

The MSP430F6776AIPZ provides seven independent 24-bit sigma-delta ADC channels (SD24_B) mapped to differential inputs SD0P0/SD0N0 through SD6P0/SD6N0. This enables concurrent sampling of three phase voltages, neutral voltage, and three phase currents - fully supporting 3-phase 4-wire star and delta configurations as documented in Table 3-1 and Section 1.1 of SLAS982A.

Can the MSP430F6776AIPZ drive a 320-segment LCD directly without external bias circuitry?

Yes, the MSP430F6776AIPZ integrates a programmable LCD controller supporting up to 320 segments using eight commons (COM0–COM7) and 40 segment lines. It includes internal charge pump, contrast control, and software-configurable bias and frame frequency - eliminating need for external LCD drivers or bias generators per Section 1.1 and Section 5.15 of SLAS982A.