Texas Instruments MSP430F2254TDAR

Overview

MSP430F2254TDAR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 16KB+256B flash, 512B RAM, dual operational amplifiers, 10-bit 200-ksps ADC with internal reference and DTC, two 16-bit timers (Timer_A and Timer_B), USCI_A0/USCI_B0 serial interfaces (UART/LIN/IrDA/SPI/I²C), and 32 I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor acquisition and processing systems.

For engineers reviewing the MSP430F2254TDAR datasheet, MSP430F2254TDAR pinout, MSP430F2254TDAR application, or MSP430F2254TDAR equivalent, key selection considerations include its dual-op-amp analog front-end, 16-pin analog input capability (A0–A15), Spy-Bi-Wire debug interface, TSSOP-38 package footprint, and LPM4 ultra-low-power mode consuming only 0.1 µA with RAM retention.

Technical Context

The MSP430F2254TDAR integrates a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its clock system includes digitally controlled oscillator (DCO) with four factory-calibrated frequencies (±1%), plus support for 32-kHz crystal, HF crystal up to 16 MHz, resonator, or external digital clock source.

It features two independent 16-bit timers-Timer_A with three capture/compare registers and Timer_B with three capture/compare registers plus shadow registers-and a universal serial communication interface supporting asynchronous UART/LIN/IrDA and synchronous SPI/I²C protocols across two USCI modules.

Key Specifications

Pinout & Package

Package: 38-pin Thin Shrink Small-Outline Package (TSSOP), suffix "DA", JEDEC MO-153 compliant, body size 9.7 mm × 4.4 mm × 1.2 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F2254TDAR, MSP430F2274TDAR provides double flash and RAM for complex algorithms, while MSP430F2252TDAR reduces cost and power for minimal-feature deployments - all share identical analog subsystems, timers, and USCI modules in the same TSSOP-38 package.

Availability

MSP430F2254TDAR 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 production continuity.

Supply support for MSP430F2254TDAR 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 MSP430F2254TDAR belongs to the MSP430F22x4 ultra-low-power microcontroller family, designed specifically for battery-operated measurement and sensing applications demanding extended runtime, integrated analog signal chain, and robust debug capability.

FAQ

What is the maximum operating frequency of the MSP430F2254TDAR?

The MSP430F2254TDAR supports a maximum system clock (MCLK) frequency of 16 MHz, achievable using the internal DCO calibrated to ±1% or an external HF crystal up to 16 MHz. At 16 MHz, the 62.5-ns instruction cycle enables real-time processing of ADC samples and serial protocol handling without latency bottlenecks. The MSP430F2254TDAR maintains full functionality across its 1.8 V–3.6 V supply range at this speed.

Does the MSP430F2254TDAR support hardware I²C communication?

Yes, the MSP430F2254TDAR supports hardware I²C communication through its USCI_B0 module, which implements full I²C master and slave functionality including clock stretching, 7-bit/10-bit addressing, and automatic ACK/NACK generation. Pins P3.1 (UCB0SDA) and P3.2 (UCB0SCL) are dedicated to this interface, and the module operates independently of CPU intervention once configured - enabling reliable sensor or peripheral communication in ultra-low-power modes.

How many analog input channels does the MSP430F2254TDAR ADC support?

The MSP430F2254TDAR's 10-bit ADC supports 12 selectable analog input channels (A0–A7, A12–A15), with A0–A7 mapped to P2.0–P2.3 and P3.6–P3.7, and A12–A15 mapped to P4.3–P4.6. All channels are accessible simultaneously via autoscan mode, and the integrated data transfer controller (DTC) automatically stores results in memory without CPU involvement - critical for continuous waveform capture in sensor applications.

Can the operational amplifiers in the MSP430F2254TDAR be used in instrumentation amplifier configurations?

Yes, the two operational amplifiers (OA0 and OA1) in the MSP430F2254TDAR can be configured as part of an instrumentation amplifier topology using external resistors. Each op-amp supports multiple input/output mappings (e.g., P2.0/OA0I0, P2.1/OA0O, P4.3/OA0O), and their rail-to-rail input/output operation, low input bias current (<500 pA), and programmable gain settings enable high-precision differential signal amplification - commonly used with bridge sensors or thermocouples in the MSP430F2254TDAR-based designs.

What debug interface does the MSP430F2254TDAR use, and what hardware is required?

The MSP430F2254TDAR uses the Spy-Bi-Wire (SBW) debug interface, a 2-wire variant of JTAG implemented on pins RST/NMI/SBWTDIO and TEST/SBWTCK. No external programming voltage is required - the interface operates from the device's main supply (1.8–3.6 V). Compatible tools include the MSP-FET430UIF and MSP-FET430U38; the latter includes a TSSOP-38 target socket, making it ideal for development and production programming of the MSP430F2254TDAR.