Texas Instruments MSP430FR2632IRGER

Overview

MSP430FR2632IRGER from Texas Instruments is an ultra-low-power mixed-signal microcontroller featuring 8KB FRAM, 2KB RAM, integrated capacitive touch IO (16 channels), and a 16-bit RISC CPU. It operates from 1.8V to 3.6V, supports up to 16MHz MCLK, and includes UART/SPI/I²C peripherals. It is used in battery-powered human-interface applications such as touch-enabled remote controls and smart thermostats.

For engineers reviewing the MSP430FR2632IRGER datasheet, MSP430FR2632IRGER pinout, MSP430FR2632IRGER application, or MSP430FR2632IRGER equivalent, key selection criteria include FRAM endurance (>10¹⁵ write cycles), capacitive touch channel count (16), supply voltage range (1.8–3.6 V), active-mode current (112 µA/MHz), and QFN-24 package compatibility with space-constrained PCB layouts.

Technical Context

The MSP430FR2632IRGER integrates a dedicated CapTIvate™ touch sensing module with spread-spectrum modulation and noise filtering, enabling robust operation in noisy EMI environments. It uses FRAM instead of Flash for program storage-eliminating erase cycles and supporting byte-level writes with zero write latency.

Its power architecture includes six low-power modes (LPM0–LPM4.5), with LPM4.5 drawing only 10 nA, making it suitable for energy-harvesting and multi-year battery applications. The device boots from ROM-resident BSL (Bootloader) supporting UART-based firmware updates without external programming hardware.

Key Specifications

Pinout & Package

Package: 24-pin QFN (RGE), 4 mm × 4 mm, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR2632IRGER, the MSP430FR2633IRGER delivers scalable touch capacity in identical packaging, while the MSP430FR2476TRHBR trades dedicated touch hardware for greater RAM and flexibility-making the MSP430FR2632IRGER ideal for cost-sensitive, high-reliability touch-only nodes.

Availability

MSP430FR2632IRGER is available at Aetrix Electronics and suitable for smart home remotes, industrial HMIs, medical wearables, and asset tracking beacons requiring stable component supply and long-term manufacturability.

Supply support for MSP430FR2632IRGER 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, with leadership in low-power microcontrollers and precision analog products.

The MSP430FR2xx product line targets ultra-low-power human-interface applications, specifically optimizing for capacitive touch sensing, energy harvesting, and battery lifetime extension in space-constrained devices.

FAQ

What is the maximum operating frequency of the MSP430FR2632IRGER?

The MSP430FR2632IRGER supports a maximum MCLK frequency of 16 MHz. This is achieved using the internal digitally controlled oscillator (DCO) or external crystal sources. At 16 MHz and 3.0 V, the active-mode current is specified at 112 µA/MHz. The device maintains timing accuracy across its full 1.8–3.6 V supply range, and the MSP430FR2632IRGER's CPU executes instructions at one cycle per instruction in most cases, enabling deterministic real-time response.

Does the MSP430FR2632IRGER include a hardware bootloader?

Yes, the MSP430FR2632IRGER includes a ROM-resident Bootloader (BSL) compliant with TI's MSP430FR2xx BSL specification. It supports UART-based firmware updates using standard ASCII commands and requires no external programming hardware. The BSL is protected by password lock and can be disabled permanently via fuse settings. This capability is built into every MSP430FR2632IRGER unit and does not consume FRAM or RAM resources during normal operation.

How many capacitive touch channels does the MSP430FR2632IRGER support?

The MSP430FR2632IRGER supports up to 16 capacitive touch I/O channels via its integrated CapTIvate™ peripheral. These channels can be configured in self-capacitance mode (up to 16 inputs) or mutual-capacitance mode (up to 8 transmitters + 8 receivers). All 16 channels operate simultaneously under hardware control, with scan times under 10 ms per frame and no CPU involvement required during sensing.

What package type and pin count does the MSP430FR2632IRGER use?

The MSP430FR2632IRGER is offered exclusively in a 24-pin QFN package (RGE suffix), measuring 4 mm × 4 mm with 0.5 mm pitch and an exposed thermal pad. This package is RoHS-compliant and designed for reflow soldering. Pin assignments are fixed per TI's datasheet SLAS853F, and the device is not available in TSSOP, SOIC, or other variants. The QFN-24 footprint is shared across the MSP430FR263x family, enabling layout reuse.

What is the lowest power consumption mode available on the MSP430FR2632IRGER?

The lowest power mode on the MSP430FR2632IRGER is LPM4.5, which draws just 10 nA typical at 3.0 V while retaining full RAM content. In this mode, the supply is disconnected from the core logic except for the RAM retention circuit, and wake-up is supported via RST/NMI or specific I/O interrupts. This mode is essential for applications requiring multi-year battery life in always-on touch interfaces, and the MSP430FR2632IRGER exits LPM4.5 in under 5 µs when triggered.