Texas Instruments MSP430FR2476TPT

Overview

MSP430FR2476TPT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 64KB FRAM, 8KB RAM, and a 12-bit SAR ADC with 12 input channels. It operates from 1.8 V to 3.6 V, supports up to 16 MHz clock frequency, and delivers 135 µA/MHz active current - optimized for battery-powered industrial sensors and medical wearables.

For engineers reviewing the MSP430FR2476TPT datasheet, MSP430FR2476TPT pinout, MSP430FR2476TPT application, or MSP430FR2476TPT equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 RTC operation at 660 nA, pin-remappable eUSCI peripherals, and 43 GPIOs with interrupt capability on LQFP-48 package.

Technical Context

The MSP430FR2476TPT integrates a digitally controlled oscillator (DCO) with FLL, ±1% accuracy at room temperature using on-chip reference, and dual crystal support (LFXT at 32 kHz, HFXT optional). Its clock system provides MCLK, SMCLK, and ACLK with programmable prescalers - enabling precise timing control across low-power modes and real-time applications.

It features four Timer_A modules (each with three capture/compare registers), one Timer_B7 (seven CCRs), and a dedicated RTC counter. Analog subsystem includes an enhanced comparator (eCOMP) with programmable hysteresis, integrated 6-bit DAC for reference voltage generation, and sample-and-hold at 200 ksps - all operating within the same 1.8–3.6 V supply range.

Key Specifications

Pinout & Package

LQFP-48 package (7 mm × 7 mm) with 43 general-purpose I/Os, dual power rails (DVCC/DVSS), and dedicated crystal (XIN/XOUT), reset (RST/NMI/SBWTDIO), and debug (TEST/SBWTCK) pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR2476TPT, the MSP430FR2475TPT offers identical functionality at reduced memory density and cost, while the MSP430FR2676IPM expands analog and touch capability at the expense of pin count and layout compatibility - making MSP430FR2476TPT the optimal balance of FRAM capacity, low-power performance, and compact 48-pin integration.

Availability

MSP430FR2476TPT 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 support, and traceable sourcing.

Supply support for MSP430FR2476TPT 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 decades of MCU innovation and broad ecosystem support.

The MSP430FR247x family targets ultra-low-power sensing and measurement applications - combining FRAM nonvolatility, sub-µA RTC operation, and integrated analog to simplify design of battery-operated industrial and medical edge devices.

FAQ

What is the maximum operating frequency of the MSP430FR2476TPT?

The MSP430FR2476TPT supports a maximum system clock frequency of 16 MHz, achieved via its on-chip digitally controlled oscillator (DCO) with frequency-locked loop (FLL). This frequency is fully operational across the specified supply range (1.8 V to 3.6 V) and temperature range (–40°C to 105°C), and is used for MCLK, SMCLK, and peripheral timing without external high-frequency crystals.

Does the MSP430FR2476TPT support hardware debugging?

Yes, the MSP430FR2476TPT supports hardware debugging via the Spy-Bi-Wire (SBW) interface using the RST/NMI/SBWTDIO and TEST/SBWTCK pins. This two-wire interface enables full-speed debugging, flash programming, and real-time register inspection through compatible tools like MSP-FET and Code Composer Studio - no JTAG header required.

How does FRAM endurance compare to traditional flash in the MSP430FR2476TPT?

The MSP430FR2476TPT uses ferroelectric RAM (FRAM) with 10¹⁵ write cycle endurance - exceeding typical flash memory by nine orders of magnitude. Unlike flash, FRAM supports byte-level writes without erase overhead, enabling efficient data logging, parameter storage, and firmware updates without wear leveling or block management software.

What analog reference voltages are available internally for the ADC in the MSP430FR2476TPT?

The MSP430FR2476TPT provides an internal shared reference generator with selectable outputs of 1.5 V, 2.0 V, or 2.5 V - configurable via the REFCTL0 register. These references are used by both the 12-bit ADC and the enhanced comparator (eCOMP), eliminating the need for external reference ICs in most precision sensing applications.

Can the MSP430FR2476TPT operate reliably at 105°C?

Yes, the MSP430FR2476TPT is rated for operation from –40°C to +105°C and is qualified for extended temperature industrial use. Its FRAM retains data integrity and low-power modes remain functional across this range, making it suitable for under-hood automotive sensors, industrial motor controllers, and enclosed thermal environments where silicon-based flash MCUs may degrade.