Texas Instruments MSP430F6724AIPNR

Overview

MSP430F6724AIPNR from Texas Instruments is an ultra-low-power mixed-signal microcontroller designed for single-phase energy metering applications. It integrates two 24-bit sigma-delta ADCs, a 10-bit 200-ksps ADC, LCD driver supporting up to 320 segments, three eUSCI_A modules (UART/IrDA/SPI), one eUSCI_B module (I²C/SPI), four 16-bit timers, hardware multiplier, and RTC with crystal offset calibration - all operating from 1.8 V to 3.6 V supply.

For engineers reviewing the MSP430F6724AIPNR datasheet, MSP430F6724AIPNR pinout, MSP430F6724AIPNR application, or MSP430F6724AIPNR equivalent, key selection criteria include its dual SD24_B ADC architecture for current/voltage channel separation, LQFP-80 package with 52 I/O pins, integrated auxiliary supply for RTC backup, and support for metering-specific peripherals including metrology-grade reference and temperature-compensated RTC.

Technical Context

The MSP430F6724AIPNR implements a 16-bit RISC CPU with 25-MHz system clock capability and extended memory addressing. Its power management includes a programmable LDO core regulator, supply voltage supervision, brownout reset, and multiple low-power modes - LPM3 (1.7 µA), LPM4 (1.6 µA), LPM3.5 (1.24 µA), and LPM4.5 (0.78 µA) - enabling multi-year battery life in portable metering devices.

It features a unified clock system with FLL stabilization, VLO and REFO internal sources, and 32-kHz crystal support. The device uses separate analog (AVCC/AVSS) and digital (DVCC/DVSS) supplies, with dedicated AUXVCC pins for backup subsystem operation and LCDCAP pin requiring DVSS tie-down when unused.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PN), 12 mm × 12 mm body size, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6723AIPN, the MSP430F6724AIPNR provides 32 KB additional flash for complex metrology algorithms and communication stacks; versus MSP430F6725AIPN, it trades 32 KB flash for lower cost while retaining identical ADC, timer, and interface capabilities required for Class 0.5S metering.

Availability

MSP430F6724AIPNR is available at Aetrix Electronics and suitable for single-phase watt-hour meters, utility grid sensor nodes, and smart home energy displays requiring stable component supply, long-lifecycle assurance, and TI-qualified metrology performance.

Supply support for MSP430F6724AIPNR 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 for industrial, automotive, and consumer applications.

The MSP430F672xA product line is engineered specifically for precision energy measurement systems, integrating metrology-grade ADCs, RTC, and LCD control to replace discrete signal chains in revenue-grade electricity meters.

FAQ

What is the maximum system clock frequency supported by the MSP430F6724AIPNR?

The MSP430F6724AIPNR supports a maximum system clock frequency of 25 MHz, enabled by its integrated FLL control loop and DCO oscillator. This allows real-time execution of metrology algorithms such as RMS calculation, harmonic analysis, and tariff switching while maintaining ultra-low power consumption in active mode (265 µA/MHz at 8 MHz, 3.0 V). The 25-MHz capability ensures headroom for future firmware enhancements without hardware redesign.

Does the MSP430F6724AIPNR include hardware support for metrology-specific calculations?

Yes, the MSP430F6724AIPNR includes a 32-bit hardware multiplier (MPY32) that accelerates fixed- and floating-point arithmetic essential for IEEE 754-compliant active/reactive power, RMS, and THD computations. Combined with three-channel DMA and dual SD24_B ADCs, this enables zero-CPU-overhead data acquisition and deterministic execution of time-critical metrology routines - a key differentiator from general-purpose MCUs in revenue-grade metering applications.

How many analog input channels does the MSP430F6724AIPNR support for metrology measurements?

The MSP430F6724AIPNR supports six external analog input channels and two internal channels (including temperature sensor) via its 10-bit ADC, plus dedicated differential inputs for two independent 24-bit sigma-delta ADCs (SD24_B). This provides eight total analog measurement paths - sufficient for simultaneous voltage, current (phase A/B/C), neutral current, and auxiliary sensor inputs in advanced single-phase or split-phase configurations.

What LCD configuration options are available on the MSP430F6724AIPNR?

The MSP430F6724AIPNR integrates the LCD_C peripheral supporting up to 320 segments in 8-mux mode, with programmable contrast control and internal charge pump. It provides 4 common outputs (COM0–COM3) and supports static, 2-, 3-, and 4-mux configurations. The LCDCAP pin requires external capacitor connection (or tie to DVSS if unused), and all segment/common pins are LVCMOS-buffered - eliminating need for external bias generation or level-shifting circuitry.

Is the MSP430F6724AIPNR pin-compatible with other devices in the MSP430F672x family?

Yes, the MSP430F6724AIPNR is fully pin-compatible with all 80-pin LQFP (PN) variants in the MSP430F672x family, including MSP430F6720AIPN through MSP430F6726AIPN. Pin functions, power domains, and peripheral mappings match across the series - enabling hardware reuse and firmware scalability. Differences are limited to flash/RAM size and SD24_B channel count (two vs. three), with no impact on PCB layout or signal routing.