Texas Instruments MSP430FR2475TPT

Overview

MSP430FR2475TPT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 32KB program FRAM, 6KB RAM, and integrated 12-bit ADC (12 channels), eCOMP, dual eUSCI_A/I²C/SPI interfaces, and four 16-bit timers - designed for battery-powered industrial sensors and medical wearables operating from 1.8 V to 3.6 V.

For engineers reviewing the MSP430FR2475TPT datasheet, MSP430FR2475TPT pinout, MSP430FR2475TPT application, or MSP430FR2475TPT equivalent, key selection criteria include LQFP-48 package compatibility, 43 GPIOs with interrupt wake capability, RTC support in LPM3.5 (660 nA), and FRAM's 10¹⁵ write endurance for frequent data logging.

Technical Context

The MSP430FR2475TPT implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) achieving ±1% accuracy at room temperature using on-chip reference. Its clock system supports MCLK up to 16 MHz, SMCLK derived via prescaler (1/2/4/8), and low-frequency sources including REFO (32 kHz), VLO (10 kHz), MODOSC, and external LFXT.

Peripherals are tightly integrated: Timer_A3 (four instances, each with three capture/compare registers), Timer_B7 (one instance, seven CCRs), CRC-16 engine, and dual eUSCI modules enabling UART/IrDA/SPI (eUSCI_A) and SPI/I²C (eUSCI_B) with full pin remap support - all accessible across 43 GPIOs in LQFP-48.

Key Specifications

Pinout & Package

LQFP-48 package (7 mm × 7 mm), 43 GPIOs with interrupt capability, dual crystal oscillator support (LFXT/XIN-XOUT), and dedicated power pins (DVCC/DVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR2476TPT, the MSP430FR2475TPT trades memory capacity for cost-sensitive designs without sacrificing peripheral richness or low-power performance; versus MSP430FR2672IPW, it offers simpler analog integration and LQFP-48 compatibility for standard sensor node layouts.

Availability

MSP430FR2475TPT is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, and battery pack management systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MSP430FR2475TPT 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 delivering analog, embedded processing, and connectivity solutions with over 50 years of innovation in low-power design and mixed-signal integration.

The MSP430FR247x product line targets ultra-low-power sensing and measurement applications, combining FRAM nonvolatility with deep-sleep modes and integrated analog to reduce system-level BOM and power consumption.

FAQ

What is the maximum operating frequency of the MSP430FR2475TPT?

The MSP430FR2475TPT supports a maximum MCLK frequency of 16 MHz, achieved via its on-chip digitally controlled oscillator (DCO) with frequency-locked loop (FLL). This clock speed is maintained across the full 1.8 V–3.6 V supply range and –40°C to +105°C temperature range, with ±1% accuracy at room temperature using the internal reference. The MSP430FR2475TPT delivers deterministic real-time performance while retaining sub-10 µs wake-from-LPM latency.

Does the MSP430FR2475TPT support real-time clock functionality in low-power mode?

Yes, the MSP430FR2475TPT supports real-time clock (RTC) operation in LPM3.5 mode at 660 nA typical current draw when paired with a 32.768 kHz external crystal. In this state, the RTC counter remains active while the CPU, FRAM, and most peripherals are powered down. The MSP430FR2475TPT retains full RTC alarm and calendar functions, enabling precise time-stamped data logging and scheduled wake events without compromising battery life.

How much FRAM and RAM does the MSP430FR2475TPT include?

The MSP430FR2475TPT integrates 32 KB of program FRAM, 512 B of information FRAM, and 6 KB of SRAM. The FRAM serves as unified nonvolatile memory for code, constants, and data storage - supporting byte-level writes, 10¹⁵ endurance, and built-in ECC. The 6 KB SRAM provides fast volatile working memory for stack, heap, and real-time buffers. This configuration is confirmed in TI's SLASEO7C datasheet Table 6-1 and Section 3 Description.

What communication interfaces are available on the MSP430FR2475TPT?

The MSP430FR2475TPT features two eUSCI_A modules (supporting UART, IrDA, and SPI) and two eUSCI_B modules (supporting SPI and I²C), all with full pin remap capability. It also supports Spy-Bi-Wire (SBW) for programming and debugging via RST/NMI/SBWTDIO. These interfaces operate across the full 1.8–3.6 V range and are accessible on 43 GPIOs in the LQFP-48 package, enabling flexible connectivity to sensors, displays, wireless transceivers, and host controllers.

Is the MSP430FR2475TPT pin-compatible with other devices in the FR247x family?

Yes, the MSP430FR2475TPT is pin-compatible with the MSP430FR2476TPT in the LQFP-48 (PT) package - sharing identical pinout, electrical characteristics, and peripheral mapping. Both devices use the same 48-pin footprint, power sequencing, and debug interface (SBW). This allows direct substitution during prototyping or production scaling, provided firmware accommodates the difference in FRAM (32 KB vs. 64 KB) and RAM (6 KB vs. 8 KB).