Texas Instruments MSP430F6723AIPNR

Overview

MSP430F6723AIPNR 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 in 8-mux mode, real-time clock with crystal offset calibration, and three enhanced USCI modules (two UART/IrDA/SPI + one I²C/SPI) - all operating from 1.8 V to 3.6 V supply.

For engineers reviewing the MSP430F6723AIPNR datasheet, MSP430F6723AIPNR pinout, MSP430F6723AIPNR application, or MSP430F6723AIPNR equivalent, key selection criteria include its dual SD24_B ADC architecture for current/voltage channel separation, auxiliary supply support for RTC backup, LPM3.5 shutdown RTC current of 1.24 µA at 3.0 V, and 80-pin LQFP package with 52 GPIOs including dedicated metrology analog inputs and LCD COM/SEG drivers.

Technical Context

The MSP430F6723AIPNR implements a 16-bit RISC CPU with 25-MHz system clock capability, unified clock system featuring FLL stabilization, VLO and REFO internal sources, and XT1 32-kHz crystal support. Its power management includes an integrated LDO with programmable core voltage, supply supervision, brownout reset, and dual auxiliary supply rails (AUXVCC1/2/3) for isolated metrology subsystem operation.

Peripherals are optimized for metering: SD24_B converters support differential PGA inputs with gain settings up to 32×, ADC10_A provides six external and two internal channels (including temperature sensor), and the RTC supports password protection, crystal calibration, and temperature compensation - all while maintaining sub-2 µA standby (LPM3) and 0.78 µA shutdown (LPM4.5) currents.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6721AIPN and MSP430F6724AIPN, the MSP430F6723AIPNR provides balanced resources: sufficient flash/RAM for certified metrology firmware, dual SD24_B ADCs with PGA, hardware multiplier for fast arithmetic, and three-channel DMA to sustain continuous waveform capture without CPU intervention - making it optimal for Class 0.5S meters with communication and display requirements.

Availability

MSP430F6723AIPNR is available at Aetrix Electronics and suitable for single-phase energy metering, utility grid sensor nodes, and smart plug analytics requiring stable component supply and long-term industrial availability.

Supply support for MSP430F6723AIPNR 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 targets precision metrology systems, integrating high-resolution sigma-delta ADCs, low-power RTC, and LCD drivers to simplify design of revenue-grade electricity meters and portable energy analyzers.

FAQ

What is the maximum system clock frequency supported by the MSP430F6723AIPNR?

The MSP430F6723AIPNR supports a maximum system clock frequency of 25 MHz, enabled by its integrated FLL control loop and DCO oscillator. This allows high-speed execution of metrology algorithms such as RMS calculation, harmonic analysis, and DLMS protocol handling while maintaining ultra-low power in active mode (265 µA/MHz at 8 MHz, 3.0 V). The device achieves 3 µs wake-up from standby mode, ensuring responsive real-time performance in event-driven metering applications.

Does the MSP430F6723AIPNR include hardware support for metrology-specific calculations?

Yes, the MSP430F6723AIPNR includes a 32-bit hardware multiplier (MPY32) that accelerates fixed-point arithmetic essential for watt-hour integration, RMS computation, and tariff-based energy accounting. Combined with three-channel DMA for automatic data transfer from SD24_B buffers to RAM or peripherals, the MSP430F6723AIPNR offloads repetitive computational and data movement tasks from the CPU - enabling deterministic execution of IEC 62053-compliant metrology firmware without software-only bottlenecks.

How many analog input channels does the MSP430F6723AIPNR support for energy measurement?

The MSP430F6723AIPNR supports six external analog input channels via its ADC10_A module and two internal channels (including a calibrated temperature sensor), plus two independent 24-bit SD24_B sigma-delta ADCs each with differential PGA inputs. This configuration enables simultaneous high-precision acquisition of voltage, current, neutral current, and auxiliary sensor signals - meeting the multi-channel requirements of Class 0.5S single-phase meters per IEC 62053-22 and ANSI C12.20 standards.

What LCD display capabilities does the MSP430F6723AIPNR provide?

The MSP430F6723AIPNR integrates the LCD_C peripheral supporting up to 320 segments in 8-mux mode, with programmable contrast control, blinking, and static segment drive. It directly drives common-electrode LCDs using COM0–COM3 and up to 32 segment lines (expandable via GPIO remapping), eliminating the need for external LCD controllers. This capability is validated for use in revenue-grade meter displays requiring long-term reliability, wide temperature operation (-40°C to +85°C), and low-power update cycles - all implemented within the MSP430F6723AIPNR silicon.

Is the MSP430F6723AIPNR qualified for use in safety-critical or revenue-grade metering applications?

Yes, the MSP430F6723AIPNR is designed and tested for revenue-grade metering applications, with features including password-protected RTC, crystal offset calibration, temperature-compensated timekeeping, and metrology-optimized ADCs meeting IEC 62053-22 Class 0.5S accuracy requirements. Texas Instruments provides production data sheets, metrology application notes (e.g., SLAA533), and reference designs (EVM430-F6736) specifically validating the MSP430F6723AIPNR for use in certified single-phase watt-hour meters - confirming its suitability for safety-critical and revenue-critical deployments.