Texas Instruments MSP430G2112IPW14R

Overview

MSP430G2112IPW14R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in a 14-pin TSSOP package, featuring 1 kB Flash, 128 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and an on-chip analog comparator. It operates from 1.8 V to 3.6 V and supports five power-saving modes - ideal for battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430G2112IPW14R datasheet, MSP430G2112IPW14R pinout, MSP430G2112IPW14R application, or MSP430G2112IPW14R equivalent, key selection criteria include its 14-pin TSSOP footprint, absence of integrated ADC10 (distinguishing it from G2x52 variants), USI-based serial connectivity, low-active-mode current (220 µA at 1 MHz), and Spy-Bi-Wire debug interface compatibility.

Technical Context

The MSP430G2112IPW14R implements a 16-bit RISC CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU clock cycle. Its clock system integrates a digitally controlled oscillator (DCO) calibrated to 1/8/12/16 MHz, plus LF oscillator and external crystal support - enabling sub-1-µs wake-up from LPM4 standby mode.

Peripheral integration includes USI supporting master/slave SPI and I²C protocols, Comparator_A+ with eight selectable inputs and CAOUT output, and Timer_A3 with three capture/compare channels for PWM, input capture, and interval timing. Port P1 offers eight programmable I/O pins with individually configurable pullup/pulldown resistors and capacitive-touch enable bits; Port P2 provides two additional I/O pins in the 14-pin PW package.

Key Specifications

Pinout & Package

Package: 14-pin TSSOP (PW), 5.0 mm × 4.4 mm, 0.65 mm pitch, surface-mount. Pin count and I/O allocation match TI's PW14 footprint across G2x12 family.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2212IPW14R, the MSP430G2112IPW14R trades memory headroom for identical low-power performance and peripheral set; versus MSP430G2102IPW14R, it adds essential hardware USI for robust sensor interfacing - making it the optimal balance of cost, capability, and power efficiency in compact sensor edge nodes.

Availability

MSP430G2112IPW14R is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, and industrial control panels requiring stable component supply, long-term manufacturability, and consistent TI qualification.

Supply support for MSP430G2112IPW14R 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 MSP430G2xx family was designed specifically for ultra-low-power sensing and measurement applications - prioritizing nanowatt operation, fast wake-up, and integrated analog peripherals to minimize external component count.

FAQ

Does the MSP430G2112IPW14R include an integrated ADC?

No, the MSP430G2112IPW14R does not include the ADC10 module. That feature is exclusive to the MSP430G2x52 series (e.g., MSP430G2452). The G2112 variant provides only the analog comparator (Comparator_A+) and no SAR ADC - confirmed by Table 1 and the "ADC10" column showing "–" for all G2x12 devices. Designers requiring analog-to-digital conversion must add an external ADC or select a G2x52 part.

What is the maximum operating frequency of the MSP430G2112IPW14R?

The MSP430G2112IPW14R supports a maximum MCLK frequency of 16 MHz, achieved using the factory-calibrated DCO oscillator. This is confirmed in the Functional Block Diagram and Section 5.1 ("Clock System") of SLAS722G, which states internal DCO frequencies up to 16 MHz with four calibrated settings stored in information memory segment A.

Can the MSP430G2112IPW14R drive I²C sensors directly?

Yes, the MSP430G2112IPW14R can drive I²C sensors directly using its USI module. Pins P1.6 (SCL) and P1.7 (SDA) support hardware I²C master/slave operation with programmable clock stretching and start/stop condition generation - eliminating software bit-banging overhead and ensuring protocol compliance per SMBus v2.0 specifications.

Is the MSP430G2112IPW14R pin-compatible with other TSSOP-14 MSP430G2x12 devices?

Yes, the MSP430G2112IPW14R shares identical pinout, electrical characteristics, and package dimensions with all other MSP430G2x12 devices in the 14-pin TSSOP (PW14) package - including MSP430G2212IPW14R and MSP430G2412IPW14R. This allows drop-in replacement within the same family for memory or peripheral scaling.

What debug interface does the MSP430G2112IPW14R support?

The MSP430G2112IPW14R supports Spy-Bi-Wire (SBW), a 2-wire variant of JTAG implemented on pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This interface enables full-speed debugging, flash programming, and boundary-scan testing using TI's MSP-FET or compatible tools - requiring only two PCB traces and no dedicated debug header.