MSP430G2444IRHA40T 16-bit Microcontroller – RHA40T Package

MSP430G2444IRHA40T Overview

The MSP430G2444IRHA40T is a low-power, 16-bit microcontroller in a 40-pin package. It targets battery-powered and embedded control tasks that need predictable timing, analog input, and flexible digital I/O. The device combines a compact memory footprint with a reduced-power CPU and integrated peripherals to lower system cost and energy use. For sourcing and manufacturer-level details see IC Manufacturer.

MSP430G2444IRHA40T Technical Specifications

MSP430G2444IRHA40T Key Features

• 16-bit CPU for compact code and deterministic control, which reduces instruction count compared with 8-bit parts.
• Low-voltage support from 1.8 V to 3.6 V, enabling direct run from single-cell Li-ion or two-cell alkaline supplies.
• Integrated ADC (10-bit, multi-channel) that simplifies sensor interfaces and reduces external components.
• Multiple serial interfaces via USCI to support UART, SPI, and I2C, enabling flexible system integration.
• Compact Flash and RAM footprint for cost-sensitive designs that still require nonvolatile code storage and runtime data.
• Multiple low-power modes to extend battery life in portable and remote applications.
• 40-pin packaging that offers a larger count of I/O and peripheral pinout than smaller packages for richer board-level connectivity.

Typical Applications

• Portable sensor nodes that require low standby current and periodic ADC sampling for long battery life and predictable wake cycles.
• Industrial sensors where a compact MCU handles analog inputs, local processing, and a serial link to a higher-level controller.
• Consumer handheld controls where moderate program size, multiple I/O and low power are needed to drive displays and buttons.
• Automated test fixtures that need deterministic timer control, serial communications, and a 40-pin footprint for signal routing.

MSP430G2444IRHA40T Advantages vs Typical Alternatives

The device delivers a balance of low power, integrated analog, and flexible serial I/O at a lower system cost than many higher-end MCUs. Its 16-bit core gives more compute per cycle than 8-bit competitors, while the 1.8?C3.6 V supply range supports common battery chemistries. The 40-pin package provides more I/O and peripheral pins than smaller packages, making it more suitable than minimal packaged parts for board-level expansion without moving to a larger or more expensive MCU family.

MSP430G2444IRHA40T Brand Info

MSP430G2444IRHA40T is part of the MSP430 family from Texas Instruments. TI positions this family for ultra-low-power embedded applications. The portfolio emphasizes energy efficiency, mixed-signal integration, and wide industry support for development tools and code examples.

FAQ

What is the CPU architecture?

The microcontroller uses a 16-bit RISC CPU. This architecture reduces code size and offers deterministic instruction timing suited for real-time control and low-power duty-cycled tasks.

Which supply voltages are supported?

The device operates from 1.8 V to 3.6 V. This range supports single-cell lithium and common multi-cell alkaline or NiMH supplies for portable and battery-backed applications.

How many pins are available on the package?

The part comes in a 40-pin RHA package. The larger pin count provides more general-purpose I/O and peripheral routing options than smaller MSP430 packages.

What analog capabilities does it offer?

It includes an integrated ADC with 10-bit resolution and multiple channels. This enables direct connection of analog sensors without an external ADC, simplifying BOM and PCB area.

What serial interfaces are supported?

The device includes a USCI module that supports common serial protocols such as UART, SPI, and I2C. This provides flexible interfacing to sensors, radios, and host processors.