Texas Instruments MSP430F6725AIPZ

Overview

MSP430F6725AIPZ from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller designed for single-phase electronic watt-hour metering. It integrates two 24-bit sigma-delta ADCs, a 10-bit 200-ksps ADC, LCD driver (up to 320 segments), real-time clock with crystal offset calibration, and three eUSCI_A modules supporting UART, IrDA, and SPI - all in a 100-pin LQFP package rated for industrial temperature range (–40°C to 85°C).

For engineers reviewing the MSP430F6725AIPZ datasheet, MSP430F6725AIPZ pinout, MSP430F6725AIPZ application, or MSP430F6725AIPZ equivalent, key selection criteria include its dual SD24_B ADC architecture for current/voltage channel separation, auxiliary supply support for RTC backup, low-power LPM3.5 mode (1.24 µA), and metering-specific peripherals including integrated LCD contrast control and temperature-compensated RTC.

Technical Context

The MSP430F6725AIPZ implements a 16-bit RISC CPU with 25-MHz system clock capability, unified clock system featuring FLL, REFO, VLO, and XT1 (32-kHz crystal) support, and flexible power management with programmable LDO core regulation. Its peripheral set is optimized for metrology: SD24_B converters accept differential PGA inputs for high-accuracy current sensing, while the 10-bit ADC provides auxiliary measurements including on-chip temperature sensor data.

It features four 16-bit Timer_A modules (one with three capture/compare registers, three with two each), three-channel DMA, hardware multiplier for 32-bit operations, and dedicated auxiliary voltage rails (AUXVCC1/2/3) enabling independent biasing of analog subsystems - critical for maintaining ADC accuracy during dynamic load conditions in utility meter applications.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, industrial temperature grade (–40°C to +85°C). Pinout validated per TI SLASE46A Rev. October 2018, Figure 4-1 and Table 4-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6726AIPZ and MSP430F6735AIPZ, the MSP430F6725AIPZ delivers optimal balance of metrology performance, memory, and cost for standard single-phase meters - retaining full SD24_B dual-channel capability and RTC functionality while minimizing BOM count through integrated LCD and auxiliary supply management.

Availability

MSP430F6725AIPZ is available at Aetrix Electronics and suitable for single-phase watt-hour meters, energy monitoring gateways, and utility grid sensor nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial deployments.

Supply support for MSP430F6725AIPZ 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 delivering analog and embedded processing solutions, with leadership in low-power microcontrollers and precision analog products.

The MSP430F672xA product line is engineered specifically for utility metering and precision energy measurement applications, integrating metrology-grade ADCs, RTC, LCD, and communication peripherals into a single ultra-low-power SoC architecture.

FAQ

What is the maximum operating frequency of the MSP430F6725AIPZ core?

The MSP430F6725AIPZ supports a maximum system clock frequency of 25 MHz, enabled by its integrated FLL (Frequency-Locked Loop) and DCO (Digitally Controlled Oscillator). This allows the 16-bit RISC CPU to execute instructions at high throughput while maintaining ultra-low power consumption - critical for real-time metrology calculations in the MSP430F6725AIPZ without exceeding thermal or current budgets.

Does the MSP430F6725AIPZ support crystal-based real-time clock operation?

Yes, the MSP430F6725AIPZ supports crystal-based RTC operation using an external 32.768-kHz tuning fork crystal connected to XIN/XOUT pins. Its RTC_C module includes temperature compensation and crystal offset calibration features, achieving ±1 ppm accuracy over –40°C to +85°C - meeting IEC 62053-21 requirements for revenue-grade timekeeping in the MSP430F6725AIPZ.

How many analog-to-digital converters does the MSP430F6725AIPZ integrate?

The MSP430F6725AIPZ integrates three ADC subsystems: two independent 24-bit sigma-delta converters (SD24_B) optimized for high-precision current/voltage measurement, and one 10-bit successive-approximation ADC (ADC10_A) capable of 200 ksps sampling for auxiliary functions like temperature sensing and status monitoring - all operating concurrently within the MSP430F6725AIPZ.

What communication interfaces are available on the MSP430F6725AIPZ?

The MSP430F6725AIPZ provides four enhanced universal serial communication interfaces: three eUSCI_A modules supporting UART, IrDA, and SPI; and one eUSCI_B module supporting I²C and SPI. This configuration enables simultaneous optical port (IrDA), HART modem (UART), and secure element (I²C) connectivity - essential for interoperable smart meter designs based on the MSP430F6725AIPZ.

Is the MSP430F6725AIPZ pin-compatible with other devices in the MSP430F672x family?

Yes, the MSP430F6725AIPZ shares identical 100-pin LQFP (PZ) packaging and pinout with all MSP430F672x IPZ variants, including MSP430F6726AIPZ and MSP430F6724AIPZ. This enables direct PCB reuse across metering SKUs with differing RAM/flash configurations or ADC counts - simplifying design scalability and inventory management for the MSP430F6725AIPZ.