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Texas Instruments MSP430G2444IRHA40R
- Part No.:
- MSP430G2444IRHA40R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430G2444IRHA40R.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 40VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430G2444IRHA40R from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 8KB flash, 512B RAM, 10-bit 200-ksps ADC, dual 16-bit timers (Timer_A3 and Timer_B3), USCI supporting UART/LIN/IrDA/SPI/I²C, and integrated DCO clocking up to 16 MHz - deployed in battery-powered sensor nodes and RF front-end control.
For engineers reviewing the MSP430G2444IRHA40R datasheet, MSP430G2444IRHA40R pinout, MSP430G2444IRHA40R application, or MSP430G2444IRHA40R equivalent, key selection criteria include active-mode current at 1 MHz (270 µA @ 2.2 V), LPM4 retention current (0.1 µA), 40-pin QFN (RHA) package footprint, ADC channel count (12-channel), and BSL programmability without external voltage.
Technical Context
The MSP430G2444IRHA40R implements a digitally controlled oscillator (DCO) with four factory-calibrated frequencies (1/2/4/8/12/16 MHz), supports crystal oscillators (LFXT1: 32 kHz or HF up to 16 MHz), and integrates Brownout Reset (BOR) and Watchdog Timer (WDT+) for system reliability. Its USCI module provides hardware-accelerated LIN auto-baud detection and IrDA encoding/decoding.
It features two independent 16-bit timers with three capture/compare registers each, enabling simultaneous PWM generation, input capture, and interval timing - all synchronized to ACLK, SMCLK, or MCLK. The ADC10 includes internal reference, sample-and-hold, autoscan, and Data Transfer Controller (DTC) for autonomous conversions without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; constant generators enable compact, efficient code for resource-constrained embedded firmware. |
| Memory | 8KB + 256B flash (in-system programmable via BSL), 512B RAM - sufficient for sensor fusion algorithms and protocol stacks without external memory. |
| ADC10 | 10-bit, 200-ksps SAR ADC with 12 analog inputs, internal reference, autoscan, and DTC - enables continuous multi-channel sampling with DMA-like data movement. |
| Power Modes | Active mode: 270 µA @ 1 MHz/2.2 V; Standby (LPM3): 1 µA; Off (LPM4 w/ RAM retention): 0.1 µA - extends coin-cell life to years in intermittent-sensing applications. |
| Clock System | Digital Controlled Oscillator (DCO) with factory-trimmed frequencies up to 16 MHz; supports 32-kHz crystal (LFXT1) and external HF crystals/resonators - eliminates need for external clock ICs. |
| I/O Count | 32 general-purpose I/O pins with Schmitt-trigger inputs, configurable pullup/pulldown, and interrupt capability on all ports - supports direct interfacing to sensors, LEDs, buttons, and transceivers. |
| USCI Peripherals | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C) - enables concurrent wired communication: e.g., UART to host MCU + I²C to environmental sensor + SPI to display driver. |
Pinout & Package
VQFN-40 (RHA) package: 6 mm × 6 mm, 0.5 mm pitch, exposed thermal pad (connected to DVSS). Pin 1 marked by top-side dot; pin numbering follows standard QFN counter-clockwise layout starting from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK | Timer_A clock input / ADC conversion clock | Enables synchronous triggering of ADC conversions using Timer_A output - critical for time-accurate sampling in motor control or audio pre-processing. |
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire data I/O | Single-pin debug interface for programming and in-circuit emulation; NMI supports wake-up from LPM4 on external event without CPU polling. |
| XIN/P2.6 & XOUT/P2.7 | Crystal oscillator input/output | Supports 32-kHz watch crystal (LFXT1) for real-time clock or high-frequency crystal (≤16 MHz) for precise system timing - selectable via BCSCTL registers. |
| P3.4/UCA0TXD & P3.5/UCA0RXD | USCI_A0 UART transmit/receive | Hardware UART with automatic baud-rate detection (LIN-compliant) - simplifies host communication in automotive sensor modules and industrial diagnostics. |
| P2.3/TA1/A3/VREF− & P2.4/TA2/A4/VREF+ | ADC reference voltage inputs / analog inputs | Allows external reference configuration (e.g., precision bandgap) or use as dedicated analog inputs - improves ADC accuracy in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 0.1 µA LPM4 current with RAM retention enables decade-scale battery life in wireless sensor endpoints using CR2032 cells. |
| Integrated DCO with calibration | Factory-trimmed DCO frequencies (1/2/4/8/12/16 MHz) eliminate external crystal for cost-sensitive applications while maintaining ±3% accuracy over temperature. |
| Autonomous ADC with DTC | Data Transfer Controller moves ADC results directly to RAM without CPU wake-up - reduces active time and power in periodic sensing tasks. |
| BSL with no external voltage | On-chip bootstrap loader supports UART-based firmware updates in field-deployed devices - no JTAG programmer or high-voltage supply required. |
| USCI with LIN support | Hardware LIN auto-baud detection and frame formatting offload timing-critical protocol handling from firmware - essential for automotive body electronics compliance. |
Applications
| Wireless Sensor Node | Industrial Temperature Monitor |
|---|---|
Use Scenario: Battery-powered node measuring ambient temperature/humidity and transmitting data via sub-GHz RF transceiver every 5 minutes. IC Role / Device Role / Timing Role: Main controller executing sensor readout, ADC conversion, data preprocessing, and RF packet assembly; uses LPM3 between samples with ACLK-driven wakeup timer. Use Value: 1 µA standby current extends CR2032 battery life beyond 5 years; integrated USCI UART interfaces directly to RF module without level-shifting. | Use Scenario: DIN-rail mounted enclosure monitoring motor winding temperature via thermistor ladder network in factory automation. IC Role / Device Role / Timing Role: Analog front-end processor acquiring 8-channel thermistor readings via ADC10 autoscan; performs linearization and sends calibrated values over RS-485 via USCI_A0. Use Value: Internal 1.5-V reference and VREF+/VREF− pins enable ratiometric measurement stability; 32 I/Os support discrete alarm outputs and status LEDs. |
| RF Front-End Controller | Smart Meter Communication Module |
Use Scenario: Stand-alone RF sensor front end capturing analog signals from piezoelectric vibration sensors and conditioning them before transmission. IC Role / Device Role / Timing Role: Signal acquisition controller performing analog-to-digital conversion, digital filtering, and burst transmission; uses Timer_B for precise pulse-width modulation of RF enable signal. Use Value: Dual 16-bit timers allow simultaneous PWM generation (TBx) and high-resolution input capture (TAx) - enables time-of-flight measurement in ultrasonic sensing. | Use Scenario: PLC or RF communication interface in electricity meter, handling HAN protocols (e.g., Zigbee SE) and secure firmware updates. IC Role / Device Role / Timing Role: Secure bootloader controller verifying signed firmware images; uses BSL over UART with hardware flow control and encrypted command parsing. Use Value: Flash memory security fuse prevents unauthorized code extraction; USCI_B0 I²C interfaces to secure element (e.g., ATECC608A) for cryptographic key storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2544IRHA40R | 16KB flash, same peripherals and pinout - doubles program space for larger protocol stacks or OTA update partitions. | Suitable where firmware complexity exceeds 8KB, e.g., BLE mesh stack integration or dual-application partitioning. | Select when future firmware growth or field-upgrade capability requires >8KB flash; identical PCB layout and power profile. |
| MSP430FR2476TRHAT | Ferroelectric RAM (64KB FRAM), 16KB RAM, no flash wear-out; higher active current (120 µA/MHz); different pinout (48-pin TSSOP). | Better suited for high-write-cycle logging (e.g., energy meter data buffers) but requires board redesign and power budget reassessment. | Choose for write-intensive data logging; avoid if pin compatibility or ultra-low LPM4 (<0.1 µA) is mandatory. |
Compared with MSP430G2544IRHA40R, the MSP430G2444IRHA40R offers identical low-power performance and peripheral set at lower cost and smaller memory footprint - ideal for fixed-function sensor controllers. Against MSP430FR2476TRHAT, it trades FRAM endurance for proven flash reliability and deeper sleep states, favoring long-life battery deployments over frequent data writes.
Availability
MSP430G2444IRHA40R is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial temperature monitors, RF front-end controllers, and smart meter communication modules requiring stable component supply and long-term lifecycle support.
Supply support for MSP430G2444IRHA40R 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 MSP430G2xx family targets ultra-low-power mixed-signal applications - designed specifically for battery-operated sensor systems, portable instrumentation, and energy-harvesting devices where microamp-level sleep currents and fast wake-up are critical.
FAQ
What is the maximum operating frequency of the MSP430G2444IRHA40R?
The MSP430G2444IRHA40R supports a maximum system clock (MCLK) frequency of 16 MHz when VCC ≥ 3.3 V and duty cycle is 50% ±10%. This is achieved using the factory-calibrated DCO or an external HF crystal. At lower supply voltages (e.g., 1.8 V), the maximum safe frequency drops to 4.15 MHz per TI's recommended operating conditions.
Does the MSP430G2444IRHA40R support hardware UART with automatic baud-rate detection?
Yes, the MSP430G2444IRHA40R's USCI_A0 module supports enhanced UART mode with automatic baud-rate detection compliant with LIN 2.x standards. This feature allows the MSP430G2444IRHA40R to synchronize to incoming LIN header bytes without prior knowledge of bus speed - essential for automotive diagnostic interfaces and plug-and-play sensor networks.
How many analog input channels does the ADC10 in the MSP430G2444IRHA40R support?
The ADC10 in the MSP430G2444IRHA40R supports 12 analog input channels (A0–A7, A12–A15), accessible via dedicated pins including P2.0/A0, P2.1/A1, P2.2/A2, P2.3/A3, P2.4/A4, P3.6/A6, P3.7/A7, P4.3/A12, P4.4/A13, P4.5/A14, and P4.6/A15 - enabling simultaneous multi-sensor acquisition in compact designs.
Can the MSP430G2444IRHA40R retain RAM contents during deep sleep?
Yes, the MSP430G2444IRHA40R retains full 512B RAM contents in Low-Power Mode 4 (LPM4), consuming only 0.1 µA typical at 2.2 V. This mode disables all clocks and core logic except RAM and the reset circuit - allowing instant wake-up with preserved context for rapid response to interrupts like RST/NMI or port changes.
Is the MSP430G2444IRHA40R pin-compatible with other devices in the G2x44 family?
Yes, the MSP430G2444IRHA40R shares identical 40-pin QFN (RHA) package pinout and signal mapping with MSP430G2544IRHA40R and MSP430G2744IRHA40R - enabling drop-in replacement across the family for memory-scaling designs without PCB revision.
MSP430G2444IRHA40R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 40-VFQFN Exposed Pad
- Series:
- MSP430G2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, WDT
- Number of I/O:
- 32
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2444IRHA40R FAQ
1.How can I place an order for MSP430G2444IRHA40R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2444IRHA40R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSP430G2444IRHA40R reliable?
The price and inventory of MSP430G2444IRHA40R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2444IRHA40R is usually 5 days.
3.What payment methods are accepted for MSP430G2444IRHA40R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2444IRHA40R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2444IRHA40R?
MSP430G2444IRHA40R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2444IRHA40R order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSP430G2444IRHA40R?
For technical support, including MSP430G2444IRHA40R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2444IRHA40R requirements.
6.How does Aetrix verify that MSP430G2444IRHA40R is sourced from the original manufacturer or authorized distributors?
All MSP430G2444IRHA40R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430G2444IRHA40R meets industry standards.
7.What is the process for return or replacement of MSP430G2444IRHA40R?
All MSP430G2444IRHA40R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2444IRHA40R, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSP430G2444IRHA40R part is unused and in its original packaging.
Return procedure for MSP430G2444IRHA40R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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