Texas Instruments MSP430F47127IPZR

Overview

MSP430F47127IPZR from Texas Instruments is an ultralow-power mixed-signal microcontroller designed for poly-phase electricity metering, featuring a 16-bit RISC CPU, 56KB Flash, 4KB RAM, seven 16-bit sigma-delta ADCs with differential PGA inputs, integrated LCD driver for up to 160 segments, and four USCI modules supporting UART, IrDA, SPI, and I²C. It operates from 1.8 V to 3.6 V and supports real-time clock functionality via its basic timer.

For engineers reviewing the MSP430F47127IPZR datasheet, MSP430F47127IPZR pinout, MSP430F47127IPZR application, or MSP430F47127IPZR equivalent, key selection criteria include sigma-delta ADC channel count (7), LCD segment drive capability (160), Flash/RAM configuration (56KB/4KB), QFP-100 package compatibility, and support for metrology-grade signal acquisition in energy measurement systems.

Technical Context

The MSP430F47127IPZR implements a dedicated sigma-delta ADC subsystem (SD16_A) with seven independent channels, each supporting differential input pairs and programmable gain amplification-enabling simultaneous high-resolution sampling of voltage and current channels in three-phase metering. Its FLL+ module provides stable clock generation from low-frequency crystals, while the integrated hardware multiplier accelerates RMS, harmonic, and energy calculations.

It integrates dual 16-bit timers (Timer_A3 and Timer_B3) with capture/compare shadow registers for precise time-stamping of zero-crossings and pulse-width modulation, alongside DMA-driven ADC data transfers to minimize CPU intervention during high-throughput metrology sequences.

Key Specifications

Pinout & Package

Package: 100-pin plastic quad flatpack (QFP), PZ package, surface-mount, 0.5 mm pitch, 14 mm × 14 mm body size.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar mixed-signal microcontroller applications.

Compared with MSP430F47127IPZR, the MSP430F47167IPZR offers 36KB more Flash for protocol stack headroom, while the MSP430F47177IPZR adds 4KB RAM for waveform buffering-both retain identical metrology ADC performance and pinout, making them drop-in replacements where memory scaling is the sole requirement.

Availability

MSP430F47127IPZR is available at Aetrix Electronics and suitable for smart electricity metering, portable energy analyzers, and industrial motor protection relays requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for utility-grade certification.

Supply support for MSP430F47127IPZR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets.

The MSP430F471xx product line was engineered specifically for high-accuracy electricity metering applications, integrating metrology-grade sigma-delta ADCs, LCD drivers, and low-power timing peripherals into a single chip to replace multi-IC meter designs.

FAQ

What is the maximum number of simultaneous analog input channels supported by the MSP430F47127IPZR?

The MSP430F47127IPZR supports seven independent 16-bit sigma-delta ADC channels (SD16_A), each with differential input pairs (A0.0± through A6.0±). All seven channels can sample concurrently-enabling true simultaneous acquisition of three-phase voltage, three-phase current, and neutral current without multiplexing delay or timing skew, which is essential for Class 0.2 metering accuracy.

Does the MSP430F47127IPZR include an integrated real-time clock (RTC)?

Yes, the MSP430F47127IPZR includes a Basic Timer module with real-time clock functionality. It supports calendar mode with seconds, minutes, hours, day-of-week, date, month, and year registers, driven by ACLK (typically from a 32.768 kHz crystal). This eliminates the need for an external RTC IC in smart meter applications requiring time-of-use tariffing or load profile logging.

What LCD configuration does the MSP430F47127IPZR support?

The MSP430F47127IPZR integrates the LCD_A module supporting up to 160 segments with four commons (COM0–COM3). It drives static, 2-mux, 3-mux, or 4-mux LCD glass directly using internal charge pumps and programmable contrast control-no external bias generator or segment drivers are required, reducing system cost and PCB area in display-equipped meters.

Can the MSP430F47127IPZR operate from a single 3.3 V supply?

Yes, the MSP430F47127IPZR operates across a supply range of 1.8 V to 3.6 V. At 3.3 V, it delivers full performance-including all seven sigma-delta ADC channels, 16-bit timers, and USCI modules-while maintaining ultralow active current (350 µA @ 1 MHz). This makes it compatible with standard 3.3 V LDO-regulated power rails common in metering designs.

Is the MSP430F47127IPZR pin-compatible with other devices in the MSP430F471xx family?

Yes, all MSP430F471xx devices in the PZ package-including MSP430F47127IPZR, MSP430F47167IPZR, and MSP430F47177IPZR-are pin-compatible. They share identical 100-pin QFP footprints, peripheral pin mappings, and power/ground assignments, allowing hardware reuse across memory variants while scaling Flash (56KB/92KB/116KB) and RAM (4KB/8KB) capacity.