Texas Instruments MSP430F4371IPZR

Overview

MSP430F4371IPZR from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 32KB+256B flash memory, 1KB RAM, integrated 160-segment LCD driver, dual 16-bit timers (Timer_A3 and Timer_B3), and USART0 with UART/SPI selectable mode. It operates from 1.8 V to 3.6 V and supports battery-powered portable measurement systems requiring long runtime and on-device display.

For engineers reviewing the MSP430F4371IPZR datasheet, MSP430F4371IPZR pinout, MSP430F4371IPZR application, or MSP430F4371IPZR equivalent, key selection criteria include its 100-pin QFP package, absence of ADC12 module (per F43x1 family designation), LCD segment drive capability up to 160 segments, and compatibility with JTAG-based debugging via TCK/TMS/TDO/TDI pins.

Technical Context

The MSP430F4371IPZR implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO) enabling wake-up from standby mode in under 6 µs. Its architecture supports five power-saving modes and integrates peripherals including a comparator, hardware multiplier (in F44x variants only - not present here), and two 16-bit timers with capture/compare functionality.

This device belongs to the MSP430x43x1 subfamily, which excludes the ADC12 module found in non-"1" variants (e.g., MSP430F437IPZ). It features one USART (USART0), no hardware multiplier, and uses the same 100-pin PZ QFP package as other F43x1/F44x1 devices, with identical pinout for shared functions like LCD segment outputs (S0–S39), COM0–COM3, and JTAG interface signals.

Key Specifications

Pinout & Package

Package: 100-pin plastic quad flat pack (PZ), 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F437IPZ, the MSP430F4371IPZR removes ADC12 to reduce cost and die size while retaining identical LCD, timer, and communication capabilities; versus MSP430F449IPZ, it trades scalability for lower power and smaller footprint in simpler display-centric designs.

Availability

MSP430F4371IPZR is available at Aetrix Electronics and suitable for handheld metering, industrial sensor nodes, medical diagnostic tools, and smart utility displays requiring stable component supply across extended production lifecycles.

Supply support for MSP430F4371IPZR 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 connectivity technologies with decades of microcontroller innovation.

The MSP430x43x1 product line targets ultralow-power portable instrumentation and display-integrated applications where extended battery life, integrated LCD control, and minimal external components are critical design requirements.

FAQ

What is the primary functional difference between MSP430F4371IPZR and MSP430F437IPZ?

The MSP430F4371IPZR omits the ADC12 module present in the MSP430F437IPZ. All other specifications-including 32KB+256B flash, 1KB RAM, 100-pin PZ package, Timer_A3/Timer_B3, USART0, and 160-segment LCD driver-are identical. This makes MSP430F4371IPZR ideal for display-centric applications where external ADCs or digital sensors are used.

Does MSP430F4371IPZR support JTAG debugging and in-system programming?

Yes, MSP430F4371IPZR supports full JTAG debugging and programming via dedicated pins (TCK, TMS, TDO/TDI, TDI/TCLK) and includes a bootstrap loader for UART-based firmware updates. It is fully compatible with TI's MSP-FET430UIF and MSP-FET430U100 development tools.

What LCD configurations does MSP430F4371IPZR support?

MSP430F4371IPZR supports LCDs with up to 160 segments using 1-, 2-, 3-, or 4-multiplex configurations. It provides four common outputs (COM0–COM3) and 40 segment outputs (S0–S39), enabling direct drive of alphanumeric or custom segmented displays without external bias circuitry.

Is the MSP430F4371IPZR pin-compatible with other devices in the MSP430x43x1 family?

Yes, MSP430F4371IPZR shares identical pinout and package (100-pin PZ QFP) with all other MSP430x43x1 devices, including MSP430F4351IPZ and MSP430F4361IPZ. This enables hardware reuse across memory variants while maintaining consistent layout and debug interface placement.

What is the maximum operating frequency and clock source flexibility of MSP430F4371IPZR?

MSP430F4371IPZR supports up to 8 MHz system clock via its FLL+ module, driven by internal DCO or external crystals on XT1 (watch/standard) or XT2 (4–8 MHz standard). MCLK, SMCLK, and ACLK are independently configurable, enabling optimized power/performance trade-offs for different subsystems.