Texas Instruments MSP430F6726AIPZR

Overview

MSP430F6726AIPZR from Texas Instruments is an ultra-low-power mixed-signal microcontroller designed for precision energy metering applications. It integrates two 24-bit sigma-delta ADCs, a 10-bit 200-ksps ADC, three 16-bit timers, four eUSCI modules (three UART/IrDA/SPI and one I²C), LCD driver supporting up to 320 segments, and hardware multiplier - all in a 100-pin LQFP package operating from 1.8 V to 3.6 V.

For engineers reviewing the MSP430F6726AIPZR datasheet, MSP430F6726AIPZR pinout, MSP430F6726AIPZR application, or MSP430F6726AIPZR equivalent, key selection criteria include its dual SD24_B ADC architecture for simultaneous voltage/current measurement, RTC with crystal offset calibration, auxiliary supply subsystem for backup operation, and support for single-phase watt-hour metering compliance (IEC 62053).

Technical Context

The MSP430F6726AIPZR implements a 16-bit RISC CPU with 25-MHz system clock capability and extensive low-power modes (LPM3.5 at 1.24 µA, LPM4.5 at 0.78 µA), enabling multi-year battery life in portable metering devices. Its unified clock system includes FLL stabilization, VLO, REFO, and 32-kHz XT1 crystal support.

It features a dedicated auxiliary power domain (AUXVCC1–AUXVCC3) for RTC, backup RAM (4 × 16 bits), and 32-kHz oscillator, isolating critical timekeeping functions from main supply fluctuations. The SD24_B ADCs support differential PGA inputs with programmable gain, while the 10-bit ADC includes internal reference and temperature sensor channel.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), body size 14 mm × 14 mm, lead pitch 0.5 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar metrology microcontroller applications.

Compared with MSP430F6725AIPZR and MSP430F6724AIPZR, the MSP430F6726AIPZR provides 8 KB RAM for extended waveform buffering and 128 KB flash for advanced features like DLMS/COSEM stack integration and over-the-air updates - making it optimal for future-proof, high-accuracy utility deployments.

Availability

MSP430F6726AIPZR is available at Aetrix Electronics and suitable for single-phase watt-hour meters, energy monitoring gateways, and portable power quality analyzers requiring stable component supply, long-term lifecycle support, and TI-qualified metrology performance.

Supply support for MSP430F6726AIPZR 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 and embedded processing solutions for industrial, automotive, and consumer applications.

The MSP430F6726AIPZR belongs to TI's ultra-low-power metrology MCU product line, engineered specifically for high-accuracy, low-cost, and low-power electricity measurement in utility and smart-grid applications.

FAQ

What is the primary application focus of the MSP430F6726AIPZR?

The MSP430F6726AIPZR is purpose-built for single-phase electronic watt-hour metering compliant with IEC 62053-21 and ANSI C12.20. Its dual 24-bit sigma-delta ADCs, RTC with crystal calibration, and integrated LCD driver make it ideal for utility-grade energy measurement where accuracy, long-term stability, and low power consumption are critical. The device supports full metrology signal chain implementation without external co-processors.

Does the MSP430F6726AIPZR support crystal-based real-time clock with temperature compensation?

Yes, the MSP430F6726AIPZR includes a password-protected RTC module with built-in crystal offset calibration and temperature compensation. It uses the 32-kHz XT1 oscillator (pins XIN/XOUT) and maintains time accuracy across temperature ranges by applying factory-trimmed coefficients stored in TLV memory. This capability ensures ±2 ppm accuracy over –40°C to 85°C, meeting IEC 62053-62 requirements for timekeeping in revenue-grade meters.

How many analog-to-digital converters does the MSP430F6726AIPZR integrate, and what are their key specifications?

The MSP430F6726AIPZR integrates three ADCs: two 24-bit sigma-delta converters (SD24_B) with differential PGA inputs and one 10-bit SAR ADC (ADC10_A) with 200-ksps sampling rate. The SD24_B modules support simultaneous sampling for voltage and current channels, while the 10-bit ADC includes internal reference, temperature sensor input, and autoscan for up to six external channels - enabling comprehensive system monitoring alongside metrology functions.

What communication interfaces are available on the MSP430F6726AIPZR, and which protocols do they support?

The MSP430F6726AIPZR provides four enhanced universal serial communication interfaces: three eUSCI_A modules supporting UART, IrDA, and SPI (with automatic baud-rate detection), and one eUSCI_B module supporting I²C and SPI. These interfaces enable compliance with DLMS/COSEM over HDLC (UART), ANSI C12.18 optical probe communication (IrDA), and local sensor interfacing (I²C), making the MSP430F6726AIPZR suitable for multi-protocol smart meter deployments.

Is the MSP430F6726AIPZR pin-compatible with other devices in the MSP430F672x family?

Yes, the MSP430F6726AIPZR is pin-compatible with all 100-pin LQFP (PZ) variants in the MSP430F672x and MSP430F673x families, including MSP430F6725AIPZR and MSP430F6736AIPZR. Pin mapping, power domains, and peripheral signal assignments are identical across the PZ package group, allowing hardware reuse and firmware scalability between meter classes - for example, upgrading from Class 1.0 to Class 0.5S by changing only the flash/RAM configuration.