Texas Instruments MSP430F5219IYFFT

Overview

MSP430F5219IYFFT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 128 KB Flash, 8 KB RAM, dual-supply I/O (DVCC/DVIO), four 16-bit timers (TA0/TA1/TA2/TB0), two USCI modules (UART/IrDA/SPI/I²C), RTC, hardware multiplier, DMA, and comparator. It targets battery-powered sensor nodes and data loggers requiring fast wake-up (3.5 µs), sub-2 µA LPM3 current, and 1.62–1.98 V DVIO interface compatibility.

For engineers reviewing the MSP430F5219IYFFT datasheet, MSP430F5219IYFFT pinout, MSP430F5219IYFFT application, or MSP430F5219IYFFT equivalent, key selection criteria include its absence of ADC (vs. F522x series), DSBGA-64 package constraints, DVIO rail support for 1.8-V logic interfacing, and LPM4.5 shutdown current of 0.18 µA at 3.0 V.

Technical Context

The MSP430F5219IYFFT implements a split I/O supply architecture: DVCC powers core logic and analog peripherals (AVCC/AVSS), while DVIO independently supplies up to 31 general-purpose I/O pins-enabling direct connection to 1.8-V systems without level shifters. Its unified clock system integrates FLL, VLO, REFO, XT1 (32-kHz), and XT2 (up to 32 MHz) sources with automatic frequency stabilization.

Peripherals are managed via port mapping control and interrupt vectoring across 16+ interrupt-capable pins. The device lacks ADC10_A but retains full timer complement (TA0 with 5 CC registers, TA1/TA2 with 3 each, TB0 with 7), dual USCI_A/B modules supporting UART/IrDA/SPI/I²C, and RTC_A with alarm capability-all operating under active, LPM3, or LPM4 power modes.

Key Specifications

Pinout & Package

Package: DSBGA-64 (YFF), 0.4-mm pitch, 3.2 mm × 3.2 mm body size with exposed thermal pad (to be connected to DVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5229IRGC, the MSP430F5219IYFFT omits ADC but retains identical timer, USCI, RTC, and power architecture-making it optimal for digital-only sensor aggregation. Against MSP430F5217IYFFT, it doubles Flash capacity for field-upgradable firmware or larger protocol stacks without altering PCB layout or power design.

Availability

MSP430F5219IYFFT is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial data loggers, and smart meter interface modules requiring stable component supply, long-term lifecycle assurance, and consistent DSBGA-64 packaging.

Supply support for MSP430F5219IYFFT 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 specializing in analog, embedded processing, and connectivity technologies with leadership in ultra-low-power design.

The MSP430F521x series was designed for energy-constrained applications demanding extended battery life, rapid wake-up, and mixed-voltage interoperability-targeting sensor systems, portable instrumentation, and infrastructure monitoring.

FAQ

What is the maximum operating frequency of the MSP430F5219IYFFT?

The MSP430F5219IYFFT supports a maximum system clock frequency of 25 MHz, achieved via its integrated digitally controlled oscillator (DCO) with FLL stabilization. This allows real-time processing of sensor data streams or protocol stack execution while maintaining ultra-low active-mode current (290 µA/MHz at 8 MHz, 3.0 V). The MSP430F5219IYFFT does not require external high-frequency crystals for full-speed operation, though XT2 supports up to 32 MHz if used.

Does the MSP430F5219IYFFT include an analog-to-digital converter (ADC)?

No, the MSP430F5219IYFFT does not include an ADC. It belongs to the MSP430F521x series, which excludes the ADC10_A module present in the F522x family (e.g., MSP430F5229). The MSP430F5219IYFFT retains all other peripherals-including comparators, timers, USCI, RTC, and DMA-but relies on external ADCs or comparator-based threshold detection for analog signal handling.

What is the purpose of the DVIO supply pin on the MSP430F5219IYFFT?

On the MSP430F5219IYFFT, the DVIO supply pin powers a dedicated I/O bank (up to 31 pins) at 1.62–1.98 V, enabling direct interface with 1.8-V logic devices such as sensors, RF transceivers, or FPGAs without external level shifters. This split-rail architecture reduces BOM cost, PCB area, and signal integrity risk-while DVCC (1.8–3.6 V) powers the core, Flash, RAM, and analog peripherals like the comparator and RTC.

How many USCI modules does the MSP430F5219IYFFT support, and what protocols do they implement?

The MSP430F5219IYFFT supports two USCI_A modules (USCI_A0 and USCI_A1) and two USCI_B modules (USCI_B0 and USCI_B1). USCI_A handles UART (with auto-baud detection), IrDA, and SPI; USCI_B supports I²C and SPI. This provides four independent serial interfaces-allowing concurrent communication with multiple peripherals (e.g., UART to host, I²C to sensor, SPI to display) without software multiplexing or performance bottlenecks.

What debug interface is supported by the MSP430F5219IYFFT, and how is it implemented?

The MSP430F5219IYFFT supports Spy-Bi-Wire (SBW), a two-pin (SBWTCK and SBWTDIO) debug interface compatible with TI's MSP-FET and LaunchPad development tools. SBW operates over the RSTDVCC/SBWTDIO and TEST/SBWTCK pins, both powered by DVCC. It enables full JTAG-equivalent functionality-including flash programming, breakpoint setting, and real-time register inspection-with minimal PCB footprint versus traditional 4-wire JTAG.