Texas Instruments MSP430F47187IPZR

Overview

MSP430F47187IPZR from Texas Instruments is an ultralow-power mixed-signal microcontroller designed for poly-phase electricity metering applications. It integrates seven 16-bit sigma-delta ADCs with differential PGA inputs, 116KB Flash, 8KB RAM, integrated LCD driver (160 segments), four USCI modules (UART/IrDA/SPI/I²C), and three-channel DMA - enabling high-accuracy energy measurement in single- and three-phase meter designs.

For engineers reviewing the MSP430F47187IPZR datasheet, MSP430F47187IPZR pinout, MSP430F47187IPZR application, or MSP430F47187IPZR equivalent, key selection criteria include its 7-channel SD16_A ADC architecture, QFP-100 package with dedicated analog input pairs (A0.0± to A6.0±), real-time clock capability, and support for E-meter reference design SLAA409.

Technical Context

The MSP430F47187IPZR implements a 16-bit RISC CPU with 62.5-ns instruction cycle time and five software-selectable low-power modes, achieving active-mode current as low as 350 µA at 1 MHz/2.2 V. Its SD16_A module supports up to seven independent 16-bit sigma-delta converters, each with programmable gain and differential input pairs mapped to dedicated pins (A0.0± through A6.0±).

It features dual 16-bit timers (Timer_A3 and Timer_B3), hardware multiplier (32×32), on-chip comparator, brownout detector, supply voltage supervisor with programmable threshold, and JTAG-based embedded emulation. All peripherals-including LCD_A, USCI_A0/A1/B0/B1, and DMA-are accessible via memory-mapped registers and interrupt-driven operation.

Key Specifications

Pinout & Package

Package: 100-pin plastic quad flatpack (QFP), PZ package, 0.5 mm pitch, RoHS-compliant. Pinout validated per SLAS626C Rev. March 2011, functional block diagram for MSP430F471x7, and Terminal Functions table (pages 8–10).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F47197IPZR, the MSP430F47187IPZR offers balanced Flash/RAM for complex metrology + communication stacks; versus MSP430F47186IPZR, it delivers full 7-channel analog acquisition capability essential for neutral-current monitoring and advanced harmonic analysis.

Availability

MSP430F47187IPZR is available at Aetrix Electronics and suitable for three-phase watt-hour meters, revenue-grade energy monitors, and smart grid endpoint nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.

Supply support for MSP430F47187IPZR 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 experience in precision metrology and low-power design.

The MSP430F471xx product line was engineered specifically for electricity metering - integrating sigma-delta ADCs, LCD drivers, and metrology-optimized peripherals to replace discrete metrology ICs and reduce system-level BOM cost.

FAQ

What is the maximum number of simultaneous analog input channels supported by the MSP430F47187IPZR?

The MSP430F47187IPZR supports seven independent 16-bit sigma-delta ADC channels (A0.0± through A6.0±), each with differential inputs and programmable gain. These channels operate concurrently without multiplexing, enabling true simultaneous sampling for 3-phase voltage and current measurements in compliance with IEC 62053-22 Class 0.2 requirements. This capability is confirmed in the SLAS626C datasheet functional block diagram and Terminal Functions table.

Does the MSP430F47187IPZR include an integrated LCD driver, and how many segments does it support?

Yes, the MSP430F47187IPZR includes an integrated LCD_A module supporting up to 160 segments with 1/3 or 1/4 bias and built-in contrast control. It drives common outputs (COM0–COM3) and segment outputs (S0–S160) directly, eliminating external LCD drivers. Pin assignments such as P10.3/S0 through LCDCAP/R33 are defined in the SLAS626C pin designation tables and Terminal Functions section.

What low-power modes are available on the MSP430F47187IPZR, and what is the lowest current draw in retention mode?

The MSP430F47187IPZR offers five software-selectable low-power modes (LPM0–LPM4) plus Active Mode. In LPM4 (off mode with RAM retention), it draws just 0.2 µA at 2.2 V, as specified in SLAS626C Section 1. This mode disables all clocks including ACLK, preserving RAM content while minimizing battery drain in battery-backed meter applications.

Can the MSP430F47187IPZR perform real-time harmonic analysis, and which hardware features enable this?

Yes, the MSP430F47187IPZR supports real-time harmonic analysis via its 32-bit hardware multiplier (MPY/MPYS/MAC/MACS), 16-bit timers with capture capability for line-cycle synchronization, and DMA-accelerated transfer of SD16_A conversion results. These features allow efficient implementation of FFT-based harmonic computation per IEEE 519, as demonstrated in TI's SLAA409 three-phase meter reference design.

Is the MSP430F47187IPZR pin-compatible with other devices in the MSP430F471xx family, and what are the key package constraints?

Yes, the MSP430F47187IPZR uses the same 100-pin QFP (PZ) package as all MSP430F471x3/x6/x7 variants, ensuring mechanical and solder footprint compatibility. However, pin functionality differs: A6.0± are active only on x7 devices (like MSP430F47187IPZR), while x3/x6 variants leave those pins as NC or AVSS. Full pin mapping must be verified against the SLAS626C Terminal Functions table to avoid misrouting.