Texas Instruments MSP430F2112IRHBR

Overview

MSP430F2112IRHBR 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 24 GPIO pins. It targets battery-powered sensor nodes and portable instrumentation requiring sub-1-µs wake-up and <0.1 µA off-mode current.

For engineers reviewing the MSP430F2112IRHBR datasheet, MSP430F2112IRHBR pinout, MSP430F2112IRHBR application, or MSP430F2112IRHBR equivalent, key selection criteria include its QFN-32 RHB package, calibrated DCO supporting 1–16 MHz operation without external crystal, integrated comparator for slope A/D, and Spy-Bi-Wire debug interface compatible with MSP-FET430UIF.

Technical Context

The MSP430F2112IRHBR 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 <0.7 µA standby and 0.1 µA RAM-retention off mode. Its basic clock module integrates a digitally controlled oscillator (DCO) calibrated to ±1% at four frequencies, plus support for 32-kHz crystal, HF crystal up to 16 MHz, or external resistor tuning.

Peripherals are memory-mapped and accessible via all CPU instructions: ADC10 includes autoscan, sample-and-hold, and data transfer controller (DTC); USCI modules provide protocol-flexible serial communication; Comparator_A+ supports analog signal comparison and battery monitoring; and Timer0_A3/Timer1_A2 deliver PWM, capture, and interval timing with interrupt capability on overflow and each compare/capture event.

Key Specifications

Pinout & Package

Package: 32-pin QFN (RHB), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad (recommended connection 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 MSP430F2122IRHBR, the MSP430F2112IRHBR trades flash/RAM capacity for lower unit cost and identical ultra-low-power performance; versus MSP430G2553IPW28, it retains the comparator and QFN thermal profile but requires layout adaptation for RHB package and single-USCI constraints.

Availability

MSP430F2112IRHBR is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and industrial data loggers requiring stable component supply, long-term lifecycle support, and verified TI production traceability.

Supply support for MSP430F2112IRHBR 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 microcontroller innovation.

The MSP430F21x2 product line was designed specifically for ultra-low-power measurement applications - emphasizing extended battery life, fast wake-up, and integrated analog peripherals in compact packages.

FAQ

What is the maximum operating frequency of the MSP430F2112IRHBR?

The MSP430F2112IRHBR supports up to 16 MHz operation via its digitally controlled oscillator (DCO), which is factory-calibrated at four frequencies (1/8/12/16 MHz) to ±1% accuracy across 1.8–3.6 V. External crystals up to 16 MHz are also supported on XIN/XOUT pins. The MSP430F2112IRHBR achieves full performance at this rate with active-mode current of 250 µA at 1 MHz and 2.2 V - scaling linearly with frequency and voltage.

Does the MSP430F2112IRHBR include hardware debug capability?

Yes, the MSP430F2112IRHBR integrates an Embedded Emulation Module (EEM) supporting Spy-Bi-Wire (SBW) debug via RST/NMI/SBWTDIO and TEST/SBWTCK pins. This enables full-speed debugging, breakpoint setting, register inspection, and flash programming using TI's MSP-FET430UIF or compatible tools - no external JTAG header required. The MSP430F2112IRHBR does not support full 4-wire JTAG.

Can the MSP430F2112IRHBR operate without an external crystal?

Yes, the MSP430F2112IRHBR can operate entirely from its internal digitally controlled oscillator (DCO), which is factory-calibrated to ±1% accuracy at 1/8/12/16 MHz. No external crystal or resonator is needed for most applications. Optional external sources include a 32-kHz watch crystal (for ACLK), HF crystal up to 16 MHz, or external resistor for DCO tuning - all selectable via software configuration of the basic clock module.

How many analog input channels does the ADC10 support on the MSP430F2112IRHBR?

The ADC10 module on the MSP430F2112IRHBR supports eight analog input channels (A0–A7), mapped to P2.0, P2.1, P2.2, P2.3, P2.4, P3.0, P3.6, and P3.7. It features internal 1.5 V/2.5 V references, sample-and-hold, autoscan mode, and a data transfer controller (DTC) that autonomously stores conversion results in RAM - all confirmed in the SLAS578J datasheet for the MSP430F2112IRHBR device.

Is the MSP430F2112IRHBR pin-compatible with other devices in the MSP430F21x2 family?

Yes, the MSP430F2112IRHBR shares identical pinout and electrical characteristics with MSP430F2122IRHBR and MSP430F2132IRHBR in the 32-pin QFN (RHB) package. All three devices use the same terminal functions, voltage ratings, and peripheral mappings - enabling direct hardware reuse across variants. Firmware must be recompiled to match flash/RAM size and peripheral enable settings, but PCB layout remains unchanged.