Texas Instruments MSP430F2254IRHAT

Overview

MSP430F2254IRHAT from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 16 KB + 256 B flash memory, 512 B RAM, dual operational amplifiers, 10-bit 200-ksps ADC with internal reference and data transfer controller, two 16-bit timers (Timer_A and Timer_B), and USCI modules supporting UART/LIN, IrDA, SPI, and I²C. It operates from 1.8 V to 3.6 V and targets battery-powered sensor acquisition and processing systems.

For engineers reviewing the MSP430F2254IRHAT datasheet, MSP430F2254IRHAT pinout, MSP430F2254IRHAT application, or MSP430F2254IRHAT equivalent, key selection considerations include its 40-pin QFN (RHA) package, dual op-amp integration for analog front-end conditioning, 32 I/O pins with interrupt capability, brownout detection, and Spy-Bi-Wire debug interface compatibility.

Technical Context

The MSP430F2254IRHAT implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its basic clock system includes a digitally controlled oscillator (DCO) calibrated to ±1% at 1 MHz, 8 MHz, 12 MHz, and 16 MHz, plus support for 32-kHz crystal, HF crystal up to 16 MHz, resonator, or external digital clock source.

It integrates two independent operational amplifiers (OA0 and OA1) with configurable inputs/outputs across multiple pins (e.g., P2.0/OA0I0, P2.1/OA0O, P4.3/OA0O, P4.4/OA1O), enabling programmable gain stages and sensor signal conditioning without external components. The ADC10 supports autoscan across 12 analog inputs (A0–A7, A12–A15) with internal VREF+/VREF− and DTC-driven transfers to memory.

Key Specifications

Pinout & Package

Package: 40-pin QFN (RHA), 6 mm × 6 mm, 0.5 mm pitch, exposed thermal pad (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 MSP430F2254IRHAT, MSP430F2274IRHAT offers double flash capacity for advanced firmware, while MSP430F2252IRHAT reduces cost and power at the expense of analog front-end integration - making MSP430F2254IRHAT the optimal balance for compact, self-contained sensor processing.

Availability

MSP430F2254IRHAT is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, industrial process controllers, and smart meter front-ends requiring stable component supply and long-term manufacturability.

Supply support for MSP430F2254IRHAT 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 specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in power-efficient electronics.

The MSP430F2254IRHAT belongs to TI's MSP430F2xx ultra-low-power microcontroller family, designed specifically for battery-operated measurement and sensing applications demanding nanowatt-level power management and integrated analog signal chain functionality.

FAQ

What is the maximum operating frequency of the MSP430F2254IRHAT?

The MSP430F2254IRHAT supports internal DCO frequencies up to 16 MHz with factory calibration to ±1% accuracy at four points (1 MHz, 8 MHz, 12 MHz, 16 MHz). External clock sources include 32-kHz crystals for low-power real-time clock operation and HF crystals up to 16 MHz for high-speed processing. The CPU executes instructions at 62.5-ns cycle time at 16 MHz, enabling deterministic real-time response in MSP430F2254IRHAT-based systems.

Does the MSP430F2254IRHAT support in-system programming without external voltage?

Yes, the MSP430F2254IRHAT supports serial onboard programming with no external programming voltage required. Its integrated bootstrap loader (BSL) enables firmware updates via UART using standard 3.3-V logic levels. Programming is performed through the USCI_A0 interface using TI's standard BSL protocol, and security fuse protection prevents unauthorized access - all features confirmed in the SLAS504G datasheet for MSP430F2254IRHAT.

How many analog input channels does the ADC10 in the MSP430F2254IRHAT support?

The ADC10 module in the MSP430F2254IRHAT supports 12 analog input channels: A0 through A7 (P2.0–P3.7), plus A12 through A15 (P4.3–P4.6). These channels are accessible via the autoscan feature, allowing sequential conversion without CPU intervention. The ADC10 also includes an internal 1.5-V reference and sample-and-hold circuitry, enabling accurate measurements directly from MSP430F2254IRHAT's integrated op-amps or external sensors.

What debug interface does the MSP430F2254IRHAT use, and what hardware is required?

The MSP430F2254IRHAT uses the two-wire Spy-Bi-Wire (SBW) interface for debugging and programming, implemented on pins RST/NMI/SBWTDIO and TEST/SBWTCK. This eliminates the need for a full 4-wire JTAG header. Compatible tools include the MSP-FET430UIF (USB) and MSP-FET430PIF (parallel port) programmers. The embedded emulation module (EEM) provides full-speed execution control, breakpoints, and real-time register inspection - all natively supported by MSP430F2254IRHAT.

Is the MSP430F2254IRHAT pin-compatible with other devices in the MSP430F22x4 family?

Yes, the MSP430F2254IRHAT is fully pin-compatible with other RHA-package MSP430F22x4 devices including MSP430F2234IRHAT and MSP430F2274IRHAT. All share identical 40-pin QFN footprints, power pin locations (DVCC/DVSS/AVCC/AVSS), and peripheral pin mappings. This allows drop-in replacement within the same package variant - for example, upgrading to MSP430F2274IRHAT for additional flash memory without PCB layout changes.