Texas Instruments MSP430F6730AIPZ

Overview

MSP430F6730AIPZ from Texas Instruments is an ultra-low-power mixed-signal microcontroller designed for single-phase electronic watt-hour metering applications. It integrates three 24-bit sigma-delta ADCs, a 10-bit 200-ksps ADC, LCD driver supporting up to 320 segments, and real-time clock with crystal offset calibration - all in a 100-pin LQFP package operating from 1.8 V to 3.6 V.

For engineers reviewing the MSP430F6730AIPZ datasheet, MSP430F6730AIPZ pinout, MSP430F6730AIPZ application, or MSP430F6730AIPZ equivalent, key selection criteria include its 16 KB flash/1 KB RAM configuration, 72 GPIOs, low-power RTC modes (LPM3.5: 1.24 µA), and dedicated metrology peripherals for precision energy measurement in utility-grade meters.

Technical Context

The MSP430F6730AIPZ implements a 16-bit RISC CPU with 25-MHz system clock capability, unified clock system featuring FLL stabilization, VLO/REFO internal sources, and 32-kHz XT1 crystal support. Its power architecture includes an integrated LDO with programmable core voltage, dual auxiliary supply rails (AUXVCC1–3), and independent analog/digital voltage domains (AVCC/DVCC/VCORE).

Peripherals are optimized for metrology: SD24_B ADCs support differential PGA inputs with 24-bit resolution and >100-dB SNR; ADC10_A provides six external + two internal channels (including temperature sensor); eUSCI modules deliver UART (with auto-baud detection), IrDA, SPI, and I²C interfaces; and the LCD_C module enables direct drive of multiplexed displays without external bias circuitry.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, lead pitch 0.5 mm. Requires external connection of VDSYS and DVSYS pins per TI design guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6730AIPZ, MSP430F6731AIPZ offers headroom for protocol stacks and diagnostics, while MSP430F6720AIPZ reduces BOM cost by omitting one SD24_B converter - both retain identical pinout, RTC, LCD, and low-power behavior for drop-in layout reuse.

Availability

MSP430F6730AIPZ is available at Aetrix Electronics and suitable for single-phase electronic watt-hour meters, utility grid edge sensors, and smart tamper-detection modules requiring stable component supply, long-lifecycle availability, and TI-qualified metrology performance.

Supply support for MSP430F6730AIPZ 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 solutions.

The MSP430F673xA family is engineered specifically for utility metering applications, integrating metrology-grade ADCs, RTC, LCD, and isolation-ready interfaces to reduce system-level BOM and simplify certification to IEC 62053 standards.

FAQ

What is the maximum system clock frequency supported by the MSP430F6730AIPZ?

The MSP430F6730AIPZ supports a maximum system clock (MCLK) frequency of 25 MHz, enabled by its integrated FLL control loop and DCO oscillator. This allows real-time execution of metrology algorithms including RMS, fundamental, and harmonic calculations while maintaining ultra-low power consumption in active mode (265 µA/MHz at 8 MHz). The 25-MHz capability ensures sufficient headroom for future firmware enhancements without requiring hardware redesign.

Does the MSP430F6730AIPZ support crystal-based real-time clock with temperature compensation?

Yes, the MSP430F6730AIPZ includes a password-protected RTC module with crystal offset calibration and temperature compensation. It uses the 32-kHz XT1 crystal (XIN/XOUT pins) and achieves ±5 ppm accuracy over −40°C to +85°C. Calibration data is stored in TLV memory and applied automatically, meeting IEC 62053-62 requirements for timekeeping in revenue meters. The RTC remains operational in LPM3.5 mode at 1.24 µA.

How many analog input channels does the MSP430F6730AIPZ provide for metrology measurements?

The MSP430F6730AIPZ provides nine total analog input channels for metrology: six external differential inputs (SD0P0/SD0N0 through SD2P0/SD2N0) across three 24-bit sigma-delta ADCs, plus six external single-ended channels and two internal channels (including temperature sensor) via the 10-bit ADC10_A. All SD24_B inputs support programmable gain amplifiers, enabling direct interface to shunts or current transformers without external signal conditioning.

What LCD configuration options are supported by the MSP430F6730AIPZ?

The MSP430F6730AIPZ integrates the LCD_C peripheral supporting up to 320 segments in 8-mux mode, with programmable contrast control and internal charge pump. It provides eight COM outputs (COM0–COM7) and 72 Sxx segment pins (S0–S71), allowing flexible mapping for alphanumeric or custom symbol displays. The driver operates from AVCC and supports static, 2-, 3-, and 4-mux configurations - ideal for utility meter displays requiring high readability under varying ambient light.

Is the MSP430F6730AIPZ pin-compatible with other devices in the MSP430F673xA family?

Yes, the MSP430F6730AIPZ is fully pin-compatible with all 100-pin LQFP (PZ) variants in the MSP430F673xA family, including MSP430F6731AIPZ through MSP430F6736AIPZ. Pin functions, power domains, and peripheral mappings match exactly - enabling hardware reuse across meter tiers (e.g., basic Class 1 to premium Class 0.5S) by simply changing flash/RAM capacity and ADC count in firmware. No PCB changes are required for migration within the PZ package group.