Texas Instruments MSP430F2112TRHBT

Overview

MSP430F2112TRHBT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 2 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and DTC, two 16-bit timers (Timer0_A3 with three capture/compare registers, Timer1_A2 with two), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and up to 24 I/O pins - deployed in battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430F2112TRHBT datasheet, MSP430F2112TRHBT pinout, MSP430F2112TRHBT application, or MSP430F2112TRHBT equivalent, key selection criteria include its −40°C to +105°C industrial temperature grade, 32-pin QFN (RHB) package with exposed thermal pad, integrated comparator for slope A/D, brownout detection, and Spy-Bi-Wire debug interface compatibility.

Technical Context

The MSP430F2112TRHBT implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency, paired with five software-selectable low-power modes (LPM0–LPM4) enabling sub-µA standby (0.7 µA) and sub-1 µs wake-up. Its basic clock module integrates a digitally controlled oscillator (DCO) calibrated to ±1% at four frequencies up to 16 MHz, plus support for 32-kHz crystal, HF crystal, resonator, or external digital clock.

Peripherals are memory-mapped and accessible via all CPU instructions: ADC10 includes sample-and-hold and autoscan; Comparator_A+ supports analog signal compare and slope A/D conversion; USCI modules provide protocol-flexible serial communication; and Timer0_A3/Timer1_A2 deliver PWM, capture, and interval timing with independent interrupt vectors per register and overflow.

Key Specifications

Pinout & Package

Package: 32-pin QFN (RHB), 5 mm × 5 mm, 0.5 mm pitch, with exposed thermal pad (QFN Pad) requiring connection to DVSS for thermal and electrical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F2112TRHBT, MSP430F2122TRHBT offers double flash/RAM with full pin and peripheral compatibility for seamless scalability, while MSP430G2553IRHB trades analog integration for memory headroom - making it viable only where comparator and LIN features are omitted from system requirements.

Availability

MSP430F2112TRHBT is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and smart utility metering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MSP430F2112TRHBT 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 decades of expertise in ultra-low-power design and industrial-grade reliability.

The MSP430F21x2 product line targets battery-constrained measurement systems - delivering optimized power/performance trade-offs through intelligent clock gating, peripheral autonomy, and integrated analog front-ends for sensor interfacing.

FAQ

What is the maximum operating frequency of the MSP430F2112TRHBT?

The MSP430F2112TRHBT supports a maximum system clock (MCLK) of 16 MHz via its internally calibrated DCO or external HF crystal. This frequency is achievable across the full −40°C to +105°C range when supplied with 2.2–3.6 V, and is used for CPU execution and high-speed peripheral operation such as ADC sampling at 200 ksps. The DCO calibration data stored in information memory segment A ensures ±1% accuracy without external components.

Does the MSP430F2112TRHBT support LIN bus communication?

Yes, the MSP430F2112TRHBT supports LIN bus communication through USCI_A0's enhanced UART mode with automatic baudrate detection (LIN). This feature allows the device to synchronize to incoming LIN header frames without prior knowledge of bus speed, enabling robust slave-node implementation in automotive body electronics. The LIN functionality is fully integrated - no external transceiver or timing components are required for basic compliance.

What debug interface does the MSP430F2112TRHBT use, and what hardware is required?

The MSP430F2112TRHBT uses the Spy-Bi-Wire (SBW) interface, accessed via RST/NMI/SBWTDIO (Pin 5) and TEST/SBWTCK (Pin 29) on the RHB package. Debugging and programming require a TI-compatible tool such as the MSP-FET430UIF or MSP-FET430U28 - no full 4-wire JTAG header is needed. SBW provides full emulation capability including breakpoints, register inspection, and flash programming with minimal PCB footprint.

How is the ADC10 module configured for autonomous operation without CPU involvement?

The ADC10 module in the MSP430F2112TRHBT achieves autonomous operation using its integrated Data Transfer Controller (DTC). When enabled, the DTC automatically stores conversion results in user-defined RAM locations upon completion - triggered by ADC10IFG - without CPU wake-up or ISR execution. This configuration reduces active-mode duty cycle significantly, especially in periodic sampling applications like sensor polling every 100 ms.

Can the MSP430F2112TRHBT operate from a single 1.8 V supply, and what features remain functional?

Yes, the MSP430F2112TRHBT operates across 1.8–3.6 V. At 1.8 V, all core functions remain active: 16-bit CPU executes at reduced max frequency (~1–2 MHz depending on temperature), ADC10 maintains 10-bit resolution (with adjusted reference options), USCI modules support UART/SPI/I²C at lower baud rates, and low-power modes retain their specified currents (e.g., 0.1 µA off-mode). Flash programming requires ≥2.2 V, but runtime operation is fully validated down to 1.8 V.