Texas Instruments MSP430G2444IYFFT

Overview

MSP430G2444IYFFT from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 8KB flash, 512B RAM, a 10-bit 200-ksps ADC with internal reference and data transfer controller, two 16-bit timers (Timer_A3 and Timer_B3), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and 32 GPIO pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes requiring fast wake-up (<1 µs) and long runtime.

For engineers reviewing the MSP430G2444IYFFT datasheet, MSP430G2444IYFFT pinout, MSP430G2444IYFFT application, or MSP430G2444IYFFT equivalent, key selection criteria include its DSBGA-49 package footprint, calibrated DCO up to 16 MHz, integrated brownout detector, Spy-Bi-Wire debug interface, and support for LIN-compliant UART auto-baud detection in sensor front-end designs.

Technical Context

The MSP430G2444IYFFT implements a 16-bit CPU with constant generators and five low-power modes (LPM0–LPM4), enabling sub-1-µA standby current and 0.1-µA off-mode retention. Its basic clock system integrates a digitally controlled oscillator (DCO) with four factory-calibrated frequencies (1/8/12/16 MHz), LFXT1 crystal oscillator (32 kHz), and internal VLO.

Peripherals are tightly synchronized via shared clock domains: ACLK drives WDT+, Timer_B, and ADC10; SMCLK feeds Timer_A and USCI modules; MCLK runs the CPU. The ADC10 supports autoscan across 12 analog inputs (A0–A7, A12–A15) with built-in voltage reference (VREF±) and DTC-triggered memory transfers-eliminating CPU intervention during conversion sequences.

Key Specifications

Pinout & Package

Package: 49-ball DSBGA (YFF), 3.1 mm × 3.1 mm, 0.4-mm pitch, bottom-side thermal pad connected 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 MSP430G2544IYFFT and MSP430FR2443IPW20, the MSP430G2444IYFFT delivers optimal balance of peripheral integration, ultra-low-power operation, and compact DSBGA packaging for space-constrained sensor endpoints-without over-provisioning flash or sacrificing ADC automation capabilities.

Availability

MSP430G2444IYFFT is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial temperature monitors, smart meter endpoints, and portable gas detectors requiring stable component supply and long-term manufacturability.

Supply support for MSP430G2444IYFFT 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 low-power MCU innovation.

The MSP430G2x44 series was designed specifically for ultra-low-power, cost-sensitive sensor and metering applications-emphasizing rapid wake-up, integrated analog front-ends, and minimal external components.

FAQ

What is the maximum operating frequency of the MSP430G2444IYFFT?

The MSP430G2444IYFFT supports a maximum system clock (MCLK) of 16 MHz using its factory-calibrated DCO. This frequency is achievable at VCC ≥ 3.3 V and enables full-speed operation of all peripherals including USCI modules and Timer_A/B. At lower supply voltages (e.g., 2.2 V), the maximum reliable DCO frequency drops to 12 MHz per the device's operating area specification.

Does the MSP430G2444IYFFT support I²C communication?

Yes, the MSP430G2444IYFFT supports I²C communication via USCI_B0 module. Pins P3.1 (SDA) and P3.2 (SCL) are dedicated to I²C functionality and can operate in standard-mode (100 kbps) and fast-mode (400 kbps). The USCI_B0 module includes automatic clock stretching, 7-bit/10-bit addressing, and multi-master arbitration-fully compliant with I²C specification v2.1.

How many analog input channels does the ADC10 support on the MSP430G2444IYFFT?

The ADC10 on the MSP430G2444IYFFT supports 12 analog input channels: A0 through A7 (P2.0–P2.4, P3.6–P3.7) and A12 through A15 (P4.3–P4.6). All channels are accessible in autoscan mode, and the DTC can automatically store results in sequence without CPU intervention-enabling efficient multi-sensor polling in low-power applications.

What debug interface does the MSP430G2444IYFFT use?

The MSP430G2444IYFFT uses the Spy-Bi-Wire (SBW) interface for programming and debugging, requiring only two pins: TEST/SBWTCK and RST/NMI/SBWTDIO. This two-wire interface is electrically compatible with JTAG but reduces PCB footprint and routing complexity compared to full 4-pin JTAG. SBW supports flash programming, breakpoint setting, and real-time register inspection via standard TI tools like MSP-FET and Code Composer Studio.

Is the MSP430G2444IYFFT pin-compatible with other devices in the G2x44 family?

Yes, the MSP430G2444IYFFT is pin-compatible with MSP430G2544IYFFT and MSP430G2744IYFFT in the same YFF (DSBGA-49) package. All three share identical pin functions, electrical characteristics, and package dimensions-allowing drop-in replacement when upgrading flash capacity (8KB → 16KB → 32KB) without PCB redesign.