Texas Instruments MSP430F2254IRHAR

Overview

MSP430F2254IRHAR 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 integrated 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 MSP430F2254IRHAR datasheet, MSP430F2254IRHAR pinout, MSP430F2254IRHAR application, or MSP430F2254IRHAR equivalent, key selection criteria include its 40-pin QFN (RHA) package, dual op-amp support, 12-channel analog input capability, ultra-low standby current (0.7 µA), and Spy-Bi-Wire debug interface compatibility.

Technical Context

The MSP430F2254IRHAR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its clock system integrates a digitally controlled oscillator (DCO), calibrated internal frequencies up to 16 MHz, and support for external 32-kHz crystal and HF crystal/resonator sources.

It features two independent 16-bit timers with capture/compare registers, a universal serial communication interface (USCI) with dual channels (USCI_A0 for UART/LIN/IrDA/SPI and USCI_B0 for SPI/I²C), and a 10-bit ADC10 with autoscan, sample-and-hold, and data transfer controller (DTC) for autonomous conversions without CPU intervention.

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 MSP430F2254IRHAR, the MSP430F2274IRHAR offers double flash capacity for complex firmware while retaining identical analog/peripheral integration, whereas the MSP430F2252IRHAR reduces cost by removing op-amps and halving flash-making it optimal for basic ADC+UART applications.

Availability

MSP430F2254IRHAR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, smart utility meters, and industrial process controllers requiring stable component supply, long-term manufacturability, and TI-qualified ultra-low-power performance.

Supply support for MSP430F2254IRHAR 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 efficiency and signal integrity.

The MSP430F2254IRHAR belongs to the MSP430F22x4 family-designed specifically for ultra-low-power sensing and measurement applications where extended battery life, integrated analog peripherals, and robust debug capability are critical.

FAQ

What is the maximum operating frequency of the MSP430F2254IRHAR?

The MSP430F2254IRHAR supports internal DCO frequencies up to 16 MHz with four factory-calibrated settings accurate to ±1%. When using external crystals, it accepts HF crystals up to 16 MHz and 32-kHz low-frequency crystals. The CPU executes instructions at 62.5-ns cycle time, enabling deterministic real-time response in time-critical sensor applications. All timing specifications for MSP430F2254IRHAR are validated across the full 1.8–3.6 V supply and –40°C to 85°C temperature range.

Does the MSP430F2254IRHAR include hardware debug support?

Yes, the MSP430F2254IRHAR integrates a full Embedded Emulation Module (EEM) and supports Spy-Bi-Wire (SBW) debugging via pins 1 (TEST/SBWTCK) and 6 (RST/NMI/SBWTDIO). This allows full-speed debugging, breakpoint setting, flash programming, and real-time variable inspection using TI's MSP-FET430UIF or compatible tools-no external JTAG header required. The SBW interface is active immediately after power-up and requires no special initialization sequence in MSP430F2254IRHAR firmware.

How many analog input channels does the MSP430F2254IRHAR ADC support?

The MSP430F2254IRHAR ADC10 module supports 12 analog input channels: A0–A7 (P2.0, P2.1, P2.2, P2.3, P2.4, P3.6, P3.7), plus A12–A15 (P4.3, P4.4, P4.5, P4.6). All channels are accessible through the same 10-bit successive-approximation converter with integrated reference, sample-and-hold, and autoscan capability. Channel selection is fully software-configurable, and the DTC enables automatic result storage to RAM without CPU intervention-critical for low-power continuous monitoring in MSP430F2254IRHAR deployments.

Can the MSP430F2254IRHAR operate without an external crystal?

Yes, the MSP430F2254IRHAR can operate entirely from its internal digitally controlled oscillator (DCO), which provides four factory-trimmed frequencies (1/2/4/8 MHz) accurate to ±1% across voltage and temperature. This eliminates the need for external crystals in cost-sensitive or space-constrained designs. External 32-kHz and HF crystals remain optional for higher precision timing, RTC functionality, or compliance with specific communication protocol clocks-all supported natively by the MSP430F2254IRHAR basic clock module.

What is the purpose of the dual operational amplifiers in the MSP430F2254IRHAR?

The two rail-to-rail operational amplifiers in the MSP430F2254IRHAR serve as configurable analog signal conditioning blocks-supporting roles such as programmable-gain amplification for sensor bridges, active filtering, comparator hysteresis, and reference buffering. Each op-amp has dedicated input/output pins (e.g., OA0I0/OA0O on P2.0/P2.1) and can be internally routed to ADC inputs or other peripherals. Their inclusion reduces BOM count and PCB area in MSP430F2254IRHAR-based designs requiring front-end analog processing prior to digitization.