Texas Instruments MSP430FR2675TPTR

Overview

MSP430FR2675TPTR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with integrated CapTIvate™ capacitive touch sensing engine, supporting up to 16 self-capacitive and 64 mutual-capacitive electrodes. It features 32KB program FRAM, 6KB RAM, and operates from 1.8 V to 3.6 V, enabling wake-on-touch current of <0.9 µA/button in battery-powered HMI applications such as smart locks and appliance control panels.

For engineers reviewing the MSP430FR2675TPTR datasheet, MSP430FR2675TPTR pinout, MSP430FR2675TPTR application, or MSP430FR2675TPTR equivalent, key selection considerations include its LQFP-48 package with 43 GPIOs (all interrupt-capable), hardware-accelerated touch scanning, IEC-61000-4-2/4-4/4-6 compliance, and FRAM-based nonvolatile memory with 10¹⁵ write endurance.

Technical Context

The MSP430FR2675TPTR integrates a dedicated CapTIvate timing module alongside Timer_A3 and Timer_B7 peripherals, enabling concurrent electrode scanning while the CPU remains in LPM3 or LPM4 sleep modes. Its analog front-end includes a 12-bit ADC with 12 channels, enhanced comparator with 6-bit DAC reference, and programmable hysteresis for robust signal conditioning.

Power management leverages multiple low-power modes: active mode draws 135 µA/MHz (typical), standby with wake-on-touch consumes <5 µA across four sensors, and shutdown (LPM4.5) drops to 37 nA without SVS. The clock system combines a 16-MHz DCO with FLL, 32-kHz REFO, and external LFXT support for precise timing control.

Key Specifications

Pinout & Package

LQFP-48 package (7 mm × 7 mm) with 43 general-purpose I/O pins, dual crystal oscillator inputs (XIN/XOUT), dedicated VREG decoupling pin, and power pair DVCC/DVSS. All GPIOs support interrupt generation and capacitive sensing functions via CapTIvate peripheral mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR2676TPTR, the MSP430FR2675TPTR offers 32KB FRAM at lower cost and power for mid-complexity HMIs; versus MSP430FR2675TRHA, it delivers full 43-GPIO flexibility in LQFP-48 for prototyping and high-pin-count interfaces.

Availability

MSP430FR2675TPTR is available at Aetrix Electronics and suitable for smart lock keypads, major appliance control panels, and garage door systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430FR2675TPTR 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 90 years of innovation in power management, signal chain, and microcontrollers.

The MSP430FR267x family is designed specifically for ultra-low-power capacitive touch HMI applications, integrating CapTIvate technology, FRAM memory, and mixed-signal peripherals to eliminate external components and simplify certified touch system design.

FAQ

What is the maximum number of capacitive touch electrodes supported by the MSP430FR2675TPTR?

The MSP430FR2675TPTR supports up to 16 self-capacitive and 64 mutual-capacitive electrodes simultaneously. This configuration is confirmed in the device comparison table and functional block diagram, enabling flexible UI layouts including sliders, wheels, and proximity sensors-all managed by the dedicated CapTIvate hardware engine without CPU overhead.

Does the MSP430FR2675TPTR include nonvolatile memory with error correction?

Yes, the MSP430FR2675TPTR includes 32KB of program FRAM and 512B of information FRAM, both featuring built-in error correction code (ECC). This ensures data integrity during read/write operations and supports 10¹⁵ write cycles-far exceeding conventional flash-making it ideal for frequent logging or configuration updates in the MSP430FR2675TPTR application.

What package type and pin count does the MSP430FR2675TPTR use?

The MSP430FR2675TPTR uses a 48-pin LQFP package (PT suffix), measuring 7 mm × 7 mm. It provides 43 general-purpose I/O pins, all interrupt-capable and configurable for CapTIvate sensing, timers, UART/I²C/SPI, ADC, and comparator functions as documented in the pin diagrams and signal descriptions for the PT variant.

How does the MSP430FR2675TPTR achieve IEC-61000-4-2 compliance?

The MSP430FR2675TPTR achieves IEC-61000-4-2 compliance (15-kV air/8-kV contact discharge) through integrated hardware features: built-in spread spectrum modulation, automatic electrode tuning, adaptive noise filtering, and debouncing algorithms. These capabilities are implemented in the CapTIvate module and validated per test conditions in the official TI datasheet SLASEO5D.

Can the MSP430FR2675TPTR operate with a 32-kHz external crystal?

Yes, the MSP430FR2675TPTR supports an external 32-kHz crystal oscillator via dedicated XIN and XOUT pins. This configuration is explicitly listed in the clock system section and used for precision RTC operation and low-power timing modes, with recommended load capacitor values specified in the layout guidelines for the MSP430FR2675TPTR.