Texas Instruments MSP430F6730AIPZR

Overview

MSP430F6730AIPZR 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 a 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 MSP430F6730AIPZR datasheet, MSP430F6730AIPZR pinout, MSP430F6730AIPZR application, or MSP430F6730AIPZR equivalent, this device delivers metrology-grade analog front-end precision, sub-µA standby current (1.7 µA in LPM3), fast 3-µs wake-up, and integrated eUSCI modules for UART/IrDA/SPI/I²C communication in utility meter designs.

Technical Context

The MSP430F6730AIPZR 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 a programmable LDO core regulator, dual auxiliary supply rails (AUXVCC1–3), and dedicated backup subsystem for RTC and 4×16-bit backup memory.

Peripherals are tightly coupled for metrology: SD24_B converters accept differential PGA inputs with programmable gain, ADC10_A provides temperature sensing and six external channels, and the LCD_C module supports 8-mux contrast control without external components. DMA enables zero-CPU-overhead data transfers between ADCs and RAM.

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).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6731AIPZR and MSP430F6720AIPZR, the MSP430F6730AIPZR offers optimal balance of metrology precision (three SD24_B channels), firmware headroom (16 KB Flash), and BOM cost - making it the preferred choice for mainstream Class 0.5 single-phase meters with LCD display.

Availability

MSP430F6730AIPZR is available at Aetrix Electronics and suitable for single-phase watt-hour meters, energy monitoring gateways, and smart grid node controllers requiring stable component supply and long-term industrial lifecycle support.

Supply support for MSP430F6730AIPZR 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, with leadership in low-power microcontrollers and precision analog signal chains.

The MSP430F673xA family is engineered specifically for utility metering, integrating metrology-grade ADCs, RTC, LCD, and communication peripherals on a single die to reduce system complexity and certification effort.

FAQ

What is the maximum system clock frequency supported by the MSP430F6730AIPZR?

The MSP430F6730AIPZR 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-within strict timing budgets. The MSP430F6730AIPZR achieves deterministic 3-µs wake-up from LPM3 to active mode at this clock rate, ensuring responsive event handling in metering applications.

Does the MSP430F6730AIPZR include hardware support for LCD display driving?

Yes, the MSP430F6730AIPZR integrates the LCD_C peripheral capable of driving up to 320 segments in 8-mux configuration. It includes built-in contrast control, charge pump (LCDCAP pin), and frame synchronization - eliminating external bias generators and reducing external component count. The MSP430F6730AIPZR's LCD_C supports static, 2-, 3-, and 4-mux modes, and its segment/common outputs are fully software configurable via register writes.

How many analog-to-digital converters does the MSP430F6730AIPZR integrate, and what are their key specifications?

The MSP430F6730AIPZR integrates four ADC subsystems: three independent 24-bit sigma-delta converters (SD24_B) optimized for metrology with differential PGA inputs and programmable gain (1–32×), plus a 10-bit SAR ADC (ADC10_A) with 200-ksps sampling rate, internal reference, and six external + two internal channels (including temperature sensor). All converters operate concurrently under DMA control, enabling synchronized multi-channel acquisition critical for accurate energy calculation in the MSP430F6730AIPZR.

What communication interfaces are available on the MSP430F6730AIPZR?

The MSP430F6730AIPZR features four enhanced universal serial communication interfaces: three eUSCI_A modules supporting UART (with automatic baud-rate detection), IrDA, and SPI; and one eUSCI_B module supporting I²C and SPI. These interfaces enable connectivity to optical ports (IrDA), PLC modems (SPI), external sensors (I²C), and host processors (UART), all while maintaining ultra-low-power operation - a core requirement for battery-backed functionality in the MSP430F6730AIPZR.

Is the MSP430F6730AIPZR pin-compatible with other devices in the MSP430F673xA family?

Yes, the MSP430F6730AIPZR in the 100-pin LQFP (PZ) package shares identical pinout and electrical characteristics with all other PZ-package variants in the MSP430F673xA family, including MSP430F6731AIPZR through MSP430F6736AIPZR. This allows hardware design reuse across meter performance tiers - for example, upgrading from MSP430F6730AIPZR to MSP430F6736AIPZR requires only flash/RAM reprogramming, not PCB revision.