Texas Instruments MSP430FR2422IRHLT

Overview

MSP430FR2422IRHLT from Texas Instruments is a 16-bit RISC ultra-low-power mixed-signal microcontroller featuring 7.25 KB FRAM program memory, 256 B information FRAM, 2 KB RAM, an 8-channel 10-bit ADC, and dual eUSCI modules supporting UART/I²C/SPI. It operates from 1.8 V to 3.6 V and delivers 120 µA/MHz active current, targeting battery-powered sensing nodes like industrial sensors and portable health devices.

For engineers reviewing the MSP430FR2422IRHLT datasheet, MSP430FR2422IRHLT pinout, MSP430FR2422IRHLT application, or MSP430FR2422IRHLT equivalent, key selection criteria include its VQFN-20 package, LPM3.5 RTC operation at 710 nA, FRAM endurance (10¹⁵ writes), integrated 1.5-V reference, and Spy-Bi-Wire debug interface compatibility.

Technical Context

The MSP430FR2422IRHLT integrates a 16-MHz DCO with FLL and ±1% accuracy at room temperature, supported by REFO, VLO, MODOSC, and external LFXT crystal options. Its clock system enables programmable MCLK/SMCLK prescalers for precise peripheral timing control across low-power modes.

It features two Timer_A3 peripherals-each with three capture/compare registers-and a dedicated 16-bit RTC counter. The ADC supports 200 ksps sampling with internal 1.5-V reference and sample-and-hold, while FRAM provides unified nonvolatile storage with built-in ECC and configurable write protection.

Key Specifications

Pinout & Package

VQFN-20 (RHL) package: 4.5 mm × 3.5 mm body, 0.5 mm pitch, exposed thermal pad recommended to be connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR2422IRHLT, the MSP430FR2433IRHLT offers higher FRAM capacity and comparator support in identical packaging, while the MSP430FR2355TRHBR provides expanded analog integration at the cost of larger footprint and higher pin count-making the MSP430FR2422IRHLT optimal for cost-sensitive, space-constrained battery nodes where core sensing and timing suffice.

Availability

MSP430FR2422IRHLT is available at Aetrix Electronics and suitable for industrial sensors, battery packs, and portable medical devices requiring stable component supply, long-lifecycle support, and verified FRAM reliability.

Supply support for MSP430FR2422IRHLT 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 for industrial, automotive, and consumer markets.

The MSP430FR24xx product line targets ultra-low-power sensing and measurement applications, emphasizing extended battery life, FRAM-based data integrity, and rapid development through integrated peripherals and toolchain support.

FAQ

What is the maximum operating frequency of the MSP430FR2422IRHLT?

The MSP430FR2422IRHLT supports a maximum CPU clock frequency of 16 MHz using its on-chip digitally controlled oscillator (DCO) with frequency-locked loop (FLL). This frequency is achievable across the full 1.8–3.6 V supply range and maintains ±1% accuracy at room temperature when calibrated against the internal reference.

Does the MSP430FR2422IRHLT include an internal voltage reference for the ADC?

Yes, the MSP430FR2422IRHLT includes an internal 1.5-V reference that can be used directly by the 10-bit ADC. This reference is stable across temperature and supply voltage, enabling accurate analog measurements without external components-critical for compact, low-cost sensor designs.

How many GPIO pins does the MSP430FR2422IRHLT provide in its VQFN-20 package?

The MSP430FR2422IRHLT in the VQFN-20 (RHL) package provides 15 general-purpose I/O pins: 8 on Port 1 (P1.0–P1.7) and 7 on Port 2 (P2.0–P2.6). All 15 pins support interrupt capability and can wake the device from any low-power mode, including LPM3.5 and LPM4.5.

What debug interface does the MSP430FR2422IRHLT support?

The MSP430FR2422IRHLT supports the Spy-Bi-Wire (SBW) interface using pins TEST/SBWTCK and RST/NMI/SBWTDIO. This two-wire debug protocol enables full programming, erasing, and real-time debugging-reducing PCB footprint versus traditional 4-pin JTAG while maintaining full functionality.

Is the MSP430FR2422IRHLT pin-compatible with other devices in the MSP430FR24xx family?

Yes, the MSP430FR2422IRHLT is pin-compatible with the MSP430FR2433IRHLT in the same VQFN-20 (RHL) package. Both share identical pin assignments, electrical characteristics, and package dimensions-allowing drop-in replacement when enhanced FRAM size or comparator functionality is required.