Texas Instruments MSP430F6720AIPNR

Overview

MSP430F6720AIPNR from Texas Instruments is an ultra-low-power mixed-signal microcontroller designed for single-phase electronic watt-hour 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 RTC with crystal offset calibration - all operating from 1.8 V to 3.6 V supply.

For engineers reviewing the MSP430F6720AIPNR datasheet, MSP430F6720AIPNR pinout, MSP430F6720AIPNR application, or MSP430F6720AIPNR equivalent, key selection criteria include its dual SD24_B ADC architecture, LQFP-80 package with 52 GPIOs, standby current of 1.7 µA (LPM3), and integrated metering peripherals enabling Class 0.5 accuracy in utility-grade energy measurement systems.

Technical Context

The MSP430F6720AIPNR implements a 16-bit RISC CPU with 25-MHz system clock capability, unified clock system featuring FLL, VLO, REFO, and 32-kHz XT1 crystal support, and a flexible power-management subsystem with programmable LDO core regulation and dual auxiliary supply rails (AUXVCC1/2/3) for isolated analog subsystem operation.

Its peripheral set is optimized for metrology: SD24_B converters support differential PGA inputs with programmable gain for current/voltage sensing channels; ADC10_A provides six external and two internal (including temperature sensor) channels with autoscan; and the password-protected RTC includes temperature compensation and crystal calibration - all accessible via DMA and low-latency interrupt vectors.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PN), 12 mm × 12 mm body size, surface-mount, RoHS-compliant. Designed for industrial meter PCB layouts with thermal pad grounding and AVCC/DVCC separation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6720AIPNR, the MSP430F6721AIPN and MSP430F6723AIPN retain identical metrology accuracy, LQFP-80 packaging, and low-power behavior but provide scalable flash/RAM for evolving firmware requirements - making them drop-in upgrades where board space and supply chain continuity are prioritized.

Availability

MSP430F6720AIPNR is available at Aetrix Electronics and suitable for single-phase watt-hour meters, energy monitoring gateways, and utility grid node monitors requiring stable component supply, long-term lifecycle support, and metrology-grade accuracy certification.

Supply support for MSP430F6720AIPNR 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, with over 50 years of innovation in low-power microcontrollers and precision analog front-ends.

The MSP430F6720AIPNR belongs to TI's ultra-low-power metering MCU product line, engineered specifically for revenue-grade energy measurement in utility, industrial, and residential applications - emphasizing metrology accuracy, regulatory compliance, and system-level integration.

FAQ

What is the maximum system clock frequency supported by the MSP430F6720AIPNR?

The MSP430F6720AIPNR supports a maximum system clock (MCLK) frequency of 25 MHz, enabled by its integrated FLL control loop and DCO oscillator. This allows high-speed execution of metrology algorithms and real-time signal processing while maintaining compatibility with the device's ultra-low-power architecture and 1.8–3.6 V supply range.

Does the MSP430F6720AIPNR include hardware support for metrology-specific calculations?

Yes, the MSP430F6720AIPNR includes a 32-bit hardware multiplier (MPY32) that accelerates RMS, fundamental, and harmonic calculations required for IEC 62053-21 compliance. Combined with three-channel DMA and SD24_B oversampling, it enables efficient real-time energy computation without CPU intervention - directly enhancing MSP430F6720AIPNR's suitability for Class 0.5 metering.

How many analog input channels does the MSP430F6720AIPNR support for voltage and current sensing?

The MSP430F6720AIPNR supports six external analog input channels via ADC10_A and dedicated differential inputs for two independent SD24_B converters - each SD24_B accepts up to four differential pairs. This enables simultaneous high-resolution sampling of voltage, current (shunt or CT), neutral, and auxiliary signals - a core capability confirmed in the MSP430F6720AIPNR device comparison table and functional block diagram.

Can the MSP430F6720AIPNR drive an LCD display without external components?

Yes, the MSP430F6720AIPNR integrates the LCD_C module with internal charge pump and contrast control circuitry, supporting up to 320 segments in 8-mux mode. The LCDCAP pin connects to an external capacitor (or DVSS if unused), eliminating need for external bias generators - a verified feature in the MSP430F6720AIPNR datasheet Section 1.1 and functional block diagram.

What power supply configurations are required for metrology-grade accuracy on the MSP430F6720AIPNR?

The MSP430F6720AIPNR requires separate analog (AVCC/AVSS) and digital (DVCC/DVSS) supplies, plus three dedicated AUXVCC pins to isolate SD24_B, ADC10_A, and RTC analog domains. Proper decoupling, crystal load capacitance matching, and AUXVCC filtering are mandatory - as specified in the MSP430F6720AIPNR datasheet Sections 4.1 and 5.3 - to achieve <0.1% gain error and meet IEC 62053-21 linearity requirements.