Texas Instruments MSP430F67671AIPZ

Overview

MSP430F67671AIPZ from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring six independent 24-bit sigma-delta ADCs, 256KB flash, 32KB RAM, and ultra-low-power operation (0.34 µA in RTC mode). It supports ANSI C12.20 and IEC 62053 standards, delivers <0.1% accuracy over 2000:1 dynamic range per phase, and integrates LCD driver for up to 320 segments.

For engineers reviewing the MSP430F67671AIPZ datasheet, MSP430F67671AIPZ pinout, MSP430F67671AIPZ application, or MSP430F67671AIPZ equivalent, key selection criteria include metrology-grade ADC channel count, RTC tamper detection with crystal offset calibration, pulse output support for active/reactive energy, and compatibility with Energy Measurement Design Center (EMDC) software for rapid calibration and firmware generation.

Technical Context

The MSP430F67671AIPZ implements a dedicated metrology subsystem with six SD24_B modulators-each configurable for current transformer, Rogowski coil, or shunt-based sensing-and a 10-bit SAR ADC for auxiliary measurements including supply voltage and die temperature. Its CPU executes the Energy Measurement software library to compute real-time kWh, kVARh, RMS, THD, and power factor across three phases plus neutral.

It features four eUSCI_A modules supporting UART/IrDA/SPI and two eUSCI_B modules supporting SPI/I²C for smart meter communication stacks (e.g., DLMS/COSEM over PLC or RF), alongside password-protected RTC with tamper detection, LCD controller with contrast control, and integrated security modules for anti-tamper compliance.

Key Specifications

Pinout & Package

The MSP430F67671AIPZ is housed in a 100-pin LQFP (PZ) package measuring 14 mm × 14 mm, with 62 general-purpose I/O pins, dedicated metrology analog inputs (SDxP/N), LCD segment/common drivers (COMx, Sx), and dual-domain power rails (AVCC/AVSS, DVCC/DVSS, VASYS/VDSYS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F67691AIPZ, the MSP430F67671AIPZ offers balanced memory (256KB/32KB) and full metrology capability at lower cost; versus MSP430F67661AIPZ, it provides double the RAM for complex tariff engines and secure boot without sacrificing ADC count or accuracy.

Availability

MSP430F67671AIPZ is available at Aetrix Electronics and suitable for smart electricity meters, industrial power monitors, and grid-edge sensor nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.

Supply support for MSP430F67671AIPZ 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 with deep expertise in low-power design and metrology systems.

The MSP430F67671AIPZ belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for revenue-grade energy measurement in smart grid infrastructure-prioritizing accuracy, security, ultra-low-power operation, and regulatory compliance out-of-the-box.

FAQ

What metrology standards does the MSP430F67671AIPZ meet?

The MSP430F67671AIPZ meets or exceeds ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.2 accuracy requirements for active energy measurement. Its six 24-bit sigma-delta ADCs, digital phase correction, and temperature-compensated calculations ensure compliance across 4–70 Hz line frequencies using a single calibration point-verified in TI's Energy Measurement Design Center (EMDC) validation suite for the MSP430F67671AIPZ.

How many analog input channels does the MSP430F67671AIPZ support for current and voltage sensing?

The MSP430F67671AIPZ supports six independent differential analog input channels (SD0P0/SD0N0 through SD5P0/SD5N0) for simultaneous current and voltage measurement across three phases and neutral. Each channel connects directly to a dedicated 24-bit sigma-delta modulator with programmable gain and digital filtering-enabling true polyphase metrology without external multiplexers or signal conditioning for the MSP430F67671AIPZ.

Does the MSP430F67671AIPZ include hardware pulse outputs for energy calibration?

Yes, the MSP430F67671AIPZ includes two dedicated hardware pulse output pins-one for active energy (kWh) and one for reactive energy (kVARh)-with programmable frequency scaling and duty cycle control. These outputs are driven directly by metrology accumulators and require no CPU intervention, ensuring deterministic, jitter-free pulses essential for revenue-grade calibration of the MSP430F67671AIPZ in field-deployed meters.

What LCD capabilities does the MSP430F67671AIPZ provide?

The MSP430F67671AIPZ integrates a full-featured LCD controller supporting up to 320 segments via eight commons (COM0–COM7) and 32 segments (S0–S31), with programmable contrast, internal charge pump, and static/multiplexed drive modes. This eliminates external LCD drivers in smart meter designs using the MSP430F67671AIPZ, reducing BOM cost and PCB area while maintaining readability under varying ambient light and temperature conditions.

Is the MSP430F67671AIPZ pin-compatible with other devices in the F676x1A family?

Yes, the MSP430F67671AIPZ shares identical 100-pin LQFP (PZ) package pinout with all PZ-package variants in the MSP430F676x1A family-including MSP430F67651AIPZ, MSP430F67661AIPZ, MSP430F67681AIPZ, and MSP430F67691AIPZ-enabling drop-in replacement within the same footprint. Firmware and layout remain compatible across these variants, differing only in flash/RAM size and SD24_B channel count-not pin function or electrical behavior for the MSP430F67671AIPZ.