Texas Instruments MSP430F47187IPZ

Overview

MSP430F47187IPZ from Texas Instruments is an ultralow-power mixed-signal microcontroller designed for poly-phase electricity metering, featuring 116KB Flash, 8KB RAM, seven 16-bit sigma-delta ADCs with differential PGA inputs, integrated LCD driver for up to 160 segments, and dual 16-bit timers (Timer_A3 and Timer_B3). It operates from 1.8 V to 3.6 V and supports real-time clock functionality via its Basic Timer.

For engineers reviewing the MSP430F47187IPZ datasheet, MSP430F47187IPZ pinout, MSP430F47187IPZ application, or MSP430F47187IPZ equivalent, key selection criteria include sigma-delta ADC channel count (7), LCD segment drive capability (160), Flash/RAM size (116KB/8KB), QFP-100 package compatibility, and support for I²C, SPI, UART, and IrDA via four USCI modules.

Technical Context

The MSP430F47187IPZ implements a 16-bit RISC CPU with 62.5-ns instruction cycle time and three-channel DMA, enabling high-efficiency data movement between its seven SD16_A sigma-delta converters and memory without CPU intervention. Its FLL+ system provides stable clock generation from internal or external sources including XT1 (32.768 kHz watch crystal) and XT2 (up to 8 MHz).

It integrates dedicated metering peripherals: each of the seven SD16_A ADCs supports programmable gain amplification on differential inputs, and the LCD_A module delivers static-to-1/4-bias drive with integrated contrast control and internal voltage generation-eliminating need for external bias components in energy meter displays.

Key Specifications

Pinout & Package

Package: 100-pin plastic quad flatpack (QFP), PZ variant, 14 mm × 14 mm body, 0.5 mm lead pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F47197IPZ and MSP430F47186IPZ, the MSP430F47187IPZ uniquely balances large Flash (116KB), generous RAM (8KB), and full seven-channel sigma-delta capability - making it optimal for feature-rich, future-proof electricity meter designs requiring both computational headroom and comprehensive analog sensing.

Availability

MSP430F47187IPZ is available at Aetrix Electronics and suitable for smart electricity metering, industrial power monitoring, and battery-powered AMI endpoint applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MSP430F47187IPZ 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 precision energy metering, integrating metrology-grade 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 analog input channels supported by the MSP430F47187IPZ?

The MSP430F47187IPZ supports seven independent 16-bit sigma-delta analog-to-digital converters (SD16_A), each with differential PGA inputs. This allows up to seven fully differential analog measurement channels - sufficient for three-phase voltage/current, neutral current, and auxiliary sensing in Class 0.2 electricity meters. The MSP430F47187IPZ is the only variant in the x7 family with this full complement.

Does the MSP430F47187IPZ include an integrated LCD driver, and how many segments can it drive?

Yes, the MSP430F47187IPZ includes the LCD_A peripheral capable of driving up to 160 segments with built-in contrast control, internal charge pump, and programmable bias (1/2–1/4). It provides 40 segment outputs (S0–S39) and 4 common outputs (COM0–COM3), enabling direct interface to standard segmented LCD glass used in utility meters without external bias circuitry.

What package type and pin count does the MSP430F47187IPZ use?

The MSP430F47187IPZ is housed in a 100-pin plastic quad flatpack (PZ package), measuring 14 mm × 14 mm with 0.5 mm lead pitch. This QFP package provides 68 general-purpose I/O pins, dedicated analog inputs (A0.0± through A6.0±), and full access to all peripherals including four USCI modules, timers, and LCD driver signals.

How does the MSP430F47187IPZ achieve ultralow power consumption in metering applications?

The MSP430F47187IPZ achieves ultralow power via five software-selectable low-power modes (LPM0–LPM4), sub-µA standby (1.1 µA) and off-mode (0.2 µA with RAM retention), and fast wake-up (<6 µs). Its FLL+ clock system dynamically adjusts DCO frequency, while SD16_A converters operate autonomously using DMA - minimizing CPU activity during high-precision metrology cycles.

Which communication interfaces are integrated into the MSP430F47187IPZ?

The MSP430F47187IPZ integrates four Universal Serial Communication Interface (USCI) modules: USCI_A0 and USCI_A1 support UART (with auto-baud), IrDA, and SPI; USCI_B0 and USCI_B1 support I²C and SPI. This enables concurrent implementation of optical port (UART), HAN (I²C/SPI), and PLC modem (SPI) interfaces - all without external transceivers.