Texas Instruments MSP430G2312IRSA16T

Overview

MSP430G2312IRSA16T from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 4 KB flash, 256 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 capacitive-touch I/O - ideal for battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430G2312IRSA16T datasheet, MSP430G2312IRSA16T pinout, MSP430G2312IRSA16T application, or MSP430G2312IRSA16T equivalent, key selection criteria include its QFN-16 package, 16-MHz DCO clock capability, Spy-Bi-Wire debug interface, low-power mode support (down to 0.1 µA in LPM4), and absence of integrated ADC10 (distinguishing it from G2x52 variants).

Technical Context

This device belongs to the MSP430G2x12 series, which omits the 10-bit ADC10 module present in G2x52 parts but retains full USI, Timer_A3, comparator, and low-power clock system functionality. Its basic clock module integrates DCO (calibrated up to 16 MHz), VLO, and LF oscillator support with crystal input capability on P2.6/P2.7.

The CPU executes instructions in 62.5 ns at 16 MHz, uses seven addressing modes, and supports five power-saving modes - LPM0 through LPM4 - with sub-microsecond wake-up from standby. Port P1 offers eight programmable I/O pins with individually configurable pullup/pulldown resistors and capacitive-touch enable bits; Port P2 provides six I/O pins in the 16-pin QFN package.

Key Specifications

Pinout & Package

Package: 16-pin QFN (RSA), 3.0 mm × 3.0 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 microcontroller applications.

Compared with MSP430G2412IRSA16, this part removes ADC10 to reduce cost and power in purely digital-control roles; compared with MSP430FR2111IPW16, it retains proven flash reliability and full USI/comparator features at the expense of FRAM's endurance advantage.

Availability

MSP430G2312IRSA16T is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical devices, industrial control panels, and energy-harvesting IoT endpoints requiring stable component supply across long-lifecycle designs.

Supply support for MSP430G2312IRSA16T 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 MSP430G2x12 product line targets ultra-low-power embedded control applications where extended battery life, small footprint, and integrated peripherals - excluding ADC - optimize cost and energy efficiency.

FAQ

Does MSP430G2312IRSA16T include an integrated ADC?

No, MSP430G2312IRSA16T does not include an ADC. It belongs to the G2x12 series, which omits the 10-bit ADC10 module found in G2x52 variants like MSP430G2452. Analog signal acquisition requires external ADC or use of the on-chip comparator for threshold-based decisions. This omission reduces cost and power consumption for purely digital control applications.

What debug interface does MSP430G2312IRSA16T support?

MSP430G2312IRSA16T supports Spy-Bi-Wire (SBW), a two-wire variant of JTAG implemented on pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This interface enables full in-system programming, real-time debugging, and flash security fuse configuration without requiring a four-pin JTAG header.

Can MSP430G2312IRSA16T drive capacitive-touch buttons?

Yes, MSP430G2312IRSA16T supports capacitive-touch sensing on up to 16 I/O pins via its built-in PinOsc (pin oscillator) feature. Each P1.x and P2.x pin can be individually enabled for touch operation using the PxIES and PxSEL registers - enabling low-cost human interface design without external ICs or dedicated electrodes.

What is the maximum operating frequency of MSP430G2312IRSA16T?

The MSP430G2312IRSA16T DCO is factory-calibrated to operate at up to 16 MHz. The device achieves this frequency using internal calibration constants stored in information memory segment A. No external crystal is required for full-speed operation, though a 32-kHz crystal may be added for precise real-time clock functions.

Is MSP430G2312IRSA16T pin-compatible with other MSP430G2x12 devices in QFN-16?

Yes, MSP430G2312IRSA16T is pin-compatible with all other MSP430G2x12 variants offered in the RSA-16 package (e.g., MSP430G2112IRSA16, MSP430G2412IRSA16), sharing identical pin functions, electrical characteristics, and footprint. This allows drop-in replacement within the same family for flash/RAM scaling or peripheral inclusion (e.g., ADC10).