Texas Instruments MSP430F47176IPZR

Overview

MSP430F47176IPZR from Texas Instruments is an ultralow-power mixed-signal microcontroller designed for poly-phase electricity metering, featuring six 16-bit sigma-delta ADCs with differential PGA inputs, 92KB flash, 8KB RAM, integrated LCD driver (160 segments), and four USCI modules supporting UART, IrDA, SPI, and I²C.

For engineers reviewing the MSP430F47176IPZR datasheet, MSP430F47176IPZR pinout, MSP430F47176IPZR application, or MSP430F47176IPZR equivalent, key selection criteria include ADC channel count, LCD segment support, low-power mode timing (sub-6 µs wake-up), and QFP-100 package compatibility for metering PCB layouts.

Technical Context

The MSP430F47176IPZR implements a 16-bit RISC CPU with 62.5-ns instruction cycle time, three-channel DMA, and dual 16-bit timers (Timer_A3 and Timer_B3) with capture/compare and shadow registers. Its SD16_A module supports six independent sigma-delta converters, each with programmable gain and differential input pairs.

Power management includes five software-selectable low-power modes, brownout detection, supply voltage supervisor with programmable threshold, and real-time clock capability via Basic Timer. The device integrates a 32-bit hardware multiplier and on-chip emulation module for debug.

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 MSP430F47176IPZR, the MSP430F47186IPZR offers 24KB more flash for enhanced feature sets, while the MSP430F47177IPZR adds one ADC channel for expanded sensing-both retain identical pinout, power profile, and peripheral set for seamless migration.

Availability

MSP430F47176IPZR is available at Aetrix Electronics and suitable for three-phase metering, revenue-grade monitoring, and smart grid endpoint designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MSP430F47176IPZR 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 specializing in analog, embedded processing, and digital signal technologies, with decades of expertise in precision metrology and low-power design.

The MSP430F471xx product line was engineered specifically for electricity metering applications, integrating high-resolution sigma-delta ADCs, LCD drivers, and ultra-low-power operation to meet IEC 62053 and ANSI C12 standards.

FAQ

What is the maximum number of simultaneous analog inputs supported by the MSP430F47176IPZR?

The MSP430F47176IPZR supports six independent 16-bit sigma-delta ADC channels, each with differential input pairs (A0.0± through A5.0±), enabling true simultaneous sampling of up to 12 analog signals. Unused analog input pins must be shorted and tied to AVSS per TI design guidelines. This configuration is validated for three-phase metering where six channels measure voltage and current across L1/L2/L3 and neutral.

Does the MSP430F47176IPZR include hardware support for real-time clock functionality?

Yes, the MSP430F47176IPZR integrates a Basic Timer module with real-time clock (RTC) capability, allowing calendar-time stamping of energy data without external crystals or RTC ICs. The RTC operates from ACLK (typically sourced from a 32.768 kHz watch crystal on XIN/XOUT), and retains timekeeping in LPM3 mode with only ACLK active, consuming less than 1.1 µA total system current.

Can the MSP430F47176IPZR drive a 160-segment LCD without external components?

Yes, the MSP430F47176IPZR includes the LCD_A peripheral capable of directly driving up to 160 segments with 4 commons (COM0–COM3), using internal charge pump and contrast control registers. No external bias generator, capacitors, or voltage dividers are required - the LCDCAP pin connects a single 2.2 µF capacitor to ground, and VREF provides internal reference for LCD voltage scaling.

What communication interfaces are available on the MSP430F47176IPZR for interfacing with external metrology ICs?

The MSP430F47176IPZR provides four USCI modules: USCI_A0 and USCI_A1 support UART (with auto-baudrate and IrDA) and SPI; USCI_B0 and USCI_B1 support I²C and SPI. For interfacing with external metrology ICs like the ADS131E0x family, USCI_B0 in SPI mode is typically used for high-speed ADC data reads, while USCI_A0 UART handles configuration and status reporting via optical port.

Is the MSP430F47176IPZR pin-compatible with other devices in the MSP430F471xx family?

Yes, all MSP430F471xx devices in the PZ package-including MSP430F47176IPZR, MSP430F47186IPZR, and MSP430F47177IPZR-are pin-compatible. They share identical 100-pin QFP footprint, power pin locations (DVCC1/DVCC2, DVSS1/DVSS2, AVCC/AVSS), and peripheral pin mappings. Differences are internal (flash/RAM size, ADC count), requiring only firmware and configuration changes-not PCB redesign.