Texas Instruments MSP430F5419AIPZ

Overview

MSP430F5419AIPZ from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 128 KB flash, 16 KB RAM, a 12-bit ADC with 14 external + 2 internal channels, three 16-bit timers (TA0/TA1/TB0), and four USCI modules supporting UART/IrDA/SPI/I²C. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems and portable instrumentation.

For engineers reviewing the MSP430F5419AIPZ datasheet, MSP430F5419AIPZ pinout, MSP430F5419AIPZ application, or MSP430F5419AIPZ equivalent, key selection criteria include LPM3 standby current (1.7 µA @ 2.2 V), 100-pin LQFP package compatibility, RTC integration, and dual-USCI-A/B peripheral flexibility for multi-protocol communication in space-constrained designs.

Technical Context

The MSP430F5419AIPZ implements a CPUXV2 core with constant generators and extended memory addressing, enabling efficient C code execution. Its unified clock system integrates FLL stabilization, programmable LDO, and multiple clock sources (XT1, XT2, REFO, VLO) to support dynamic voltage and frequency scaling across active and low-power modes.

Peripherals are tightly coupled via DMA and interrupt vectors: the 12-bit ADC supports autoscan across 16 channels with internal reference; Timer_B0 provides seven capture/compare registers for PWM and event timing; and four USCI modules allow concurrent UART, IrDA, SPI, and I²C interfaces without CPU intervention.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, exposed thermal pad not specified. Pin functions validated per Figure 7-1 and Table 7-1 of SLAS655H (Rev. May 2021).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5436AIPZ, the MSP430F5419AIPZ trades flash capacity for cost-sensitive deployments; versus MSP430F5418AIPN, it delivers 20 more GPIOs and RTC crystal support in a larger, standardized LQFP - making it optimal for feature-rich, field-serviceable instruments.

Availability

MSP430F5419AIPZ is available at Aetrix Electronics and suitable for remote sensor nodes, digital thermostats, hand-held meters, and industrial timer modules requiring stable component supply across multi-year production cycles.

Supply support for MSP430F5419AIPZ 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The MSP430F541xA series was designed for ultra-low-power portable measurement systems, integrating precision analog peripherals, RTC, and flexible clocking to maximize battery life while maintaining real-time responsiveness.

FAQ

What is the maximum system clock frequency supported by the MSP430F5419AIPZ?

The MSP430F5419AIPZ supports a maximum system clock (MCLK) frequency of 25 MHz, achieved via its digitally controlled oscillator (DCO) stabilized by the FLL using an external crystal or internal reference. This frequency enables high-speed ADC sampling (up to 200 ksps), fast interrupt response, and efficient execution of real-time control algorithms without exceeding power budgets in active mode.

Does the MSP430F5419AIPZ include a hardware real-time clock (RTC) module?

Yes, the MSP430F5419AIPZ includes a dedicated RTC_A module with calendar mode, alarm interrupts, and battery-backed operation. It can be driven by the 32-kHz crystal connected to P7.0/XIN and P7.1/XOUT, providing accurate timekeeping down to seconds resolution. The RTC remains active in LPM3 mode with only 1.7 µA current draw, making it ideal for time-stamped sensor logging and scheduled wake-up events in the MSP430F5419AIPZ.

How many universal serial communication interfaces (USCIs) does the MSP430F5419AIPZ have, and what protocols do they support?

The MSP430F5419AIPZ features four USCI modules: USCI_A0, USCI_A1, USCI_B0, and USCI_B1. Each USCI_A supports UART, IrDA, and SPI; each USCI_B supports I²C and SPI. This configuration allows concurrent use of UART for host communication, I²C for sensor interfacing, and SPI for display or memory expansion - all without CPU overhead, leveraging DMA and interrupt-driven transfers in the MSP430F5419AIPZ.

What is the ADC resolution and input channel count on the MSP430F5419AIPZ?

The MSP430F5419AIPZ integrates a 12-bit successive approximation register (SAR) ADC (ADC12_A) with 14 external analog input channels (A0–A15, excluding A10/A11) and 2 internal channels (temperature sensor and VCC/2). It supports autoscan mode, sample-and-hold, and internal reference - enabling high-precision, multi-channel data acquisition critical for sensor conditioning and calibration tasks in the MSP430F5419AIPZ.

Is the MSP430F5419AIPZ pin-compatible with other devices in the MSP430F543x/F541x family?

Yes, the MSP430F5419AIPZ shares identical pinout and electrical characteristics with MSP430F5438AIPZ and MSP430F5436AIPZ in the 100-pin PZ package, as confirmed in Figure 7-1 of SLAS655H. This allows direct substitution in existing designs targeting higher flash variants, provided firmware accommodates the 128 KB limit. No PCB changes are required when migrating between these PZ-package devices, including the MSP430F5419AIPZ.