Texas Instruments MSP430F6723IPZR

Overview

MSP430F6723IPZR from Texas Instruments is an ultra-low-power 16-bit 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 calibration, and three eUSCI_A modules supporting UART/IrDA/SPI plus one eUSCI_B module for I²C/SPI - all in a 100-pin LQFP package.

For engineers reviewing the MSP430F6723IPZR datasheet, MSP430F6723IPZR pinout, MSP430F6723IPZR application, or MSP430F6723IPZR equivalent, key selection criteria include its dual SD24_B ADC support for current/voltage channel separation, auxiliary supply architecture for RTC backup, low-power LPM3.5 mode (1.24 µA), and metering-specific peripherals including tamper detection and energy measurement firmware compatibility.

Technical Context

The MSP430F6723IPZR 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 flexible power management with integrated LDO, supply supervision, and dual auxiliary voltage rails (AUXVCC1–3) for isolated RTC and backup subsystem operation.

Its peripheral set is optimized for metrology: SD24_B converters support differential PGA inputs with programmable gain, ADC10_A provides six external + two internal channels (including temperature sensor), and the LCD_C controller includes integrated contrast control and charge pump - all operating under coordinated low-power modes with sub-3-µs wake-up from LPM3.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, standard JEDEC footprint with exposed thermal pad (not electrically connected). Requires external connection of VDSYS/DVSYS pins for proper auxiliary supply routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power metrology microcontroller applications.

Compared with MSP430F6724IPZR and MSP430F6725IPZR, the MSP430F6723IPZR offers optimal balance of metrology performance, memory headroom, and cost for Class B single-phase meters - delivering full feature compliance at minimal bill-of-materials impact.

Availability

MSP430F6723IPZR is available at Aetrix Electronics and suitable for 2-wire single-phase metering, tamper-resistant utility meters, and smart grid endpoint nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial certification.

Supply support for MSP430F6723IPZR 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 specializing in analog and embedded processing technologies, with leadership in low-power microcontrollers and precision analog signal chains.

The MSP430F672x product line is engineered specifically for electricity metering applications, integrating metrology-grade ADCs, RTC with crystal compensation, and low-power peripherals to meet IEC 62053 standards without external support ICs.

FAQ

What is the maximum system clock frequency supported by the MSP430F6723IPZR?

The MSP430F6723IPZR supports a maximum system clock frequency of 25 MHz, enabled by its digitally controlled oscillator (DCO) and FLL-based clock stabilization. This speed allows real-time execution of energy computation algorithms while maintaining ultra-low power consumption in active mode (265 µA/MHz at 8 MHz, 3.0 V). The MSP430F6723IPZR achieves deterministic timing for metrology sampling windows and LCD refresh cycles without external clock sources.

Does the MSP430F6723IPZR include hardware support for energy calculation functions?

Yes, the MSP430F6723IPZR includes a 32-bit hardware multiplier (MPY32) that accelerates fixed-point arithmetic required for active/reactive energy calculations, RMS voltage/current, and harmonic analysis. Combined with 3-channel DMA and SD24_B oversampling, this enables cycle-accurate Watt-hour accumulation without CPU intervention - reducing active-mode time and extending battery life in backup scenarios.

How many sigma-delta ADC channels does the MSP430F6723IPZR integrate, and what is their resolution?

The MSP430F6723IPZR integrates two independent 24-bit sigma-delta ADC modules (SD24_B), each supporting differential PGA inputs with programmable gain (1× to 32×). These converters provide 21-bit effective resolution at 128× oversampling, meeting IEC 62053-22 Class B accuracy requirements for voltage and current measurement in single-phase meters.

What packaging and thermal characteristics apply to the MSP430F6723IPZR?

The MSP430F6723IPZR is supplied in a 100-pin LQFP (PZ) package with 14 mm × 14 mm body size and standard JEDEC footprint. Its thermal resistance (θ_JA) is 31.3°C/W, validated for operation from –40°C to 85°C ambient. The package includes an exposed thermal pad (non-electrical) to enhance heat dissipation in sealed meter enclosures with limited airflow.

Can the MSP430F6723IPZR drive an LCD display without external components?

Yes, the MSP430F6723IPZR features an integrated LCD_C controller supporting up to 320 segments in 8-mux configuration, with built-in charge pump and software-adjustable contrast control. It requires only a single external capacitor (LCDCAP) connected to DVSS - eliminating external bias generators, resistors, or potentiometers and reducing total solution cost and board area.