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Texas Instruments MSP430G2544IDA38R
- Part No.:
- MSP430G2544IDA38R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430G2544IDA38R.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,395
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Product details
Overview
MSP430G2544IDA38R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller with 16KB+256B flash, 512B RAM, 10-bit 200-ksps ADC with internal reference and DTC, dual 16-bit timers (Timer_A3 and Timer_B3), USCI_A0/USCI_B0 supporting UART/LIN/IrDA/SPI/I²C, and 32 GPIO pins in a 38-pin TSSOP package. It targets battery-powered sensor nodes and RF front ends.
For engineers reviewing the MSP430G2544IDA38R datasheet, MSP430G2544IDA38R pinout, MSP430G2544IDA38R application, or MSP430G2544IDA38R equivalent, key selection criteria include active-mode current at 1 MHz (270 µA @ 2.2 V), standby current (1 µA), 16-MHz DCO capability, 32 I/O with Schmitt-trigger inputs, and integrated brownout detection with programmable threshold.
Technical Context
The MSP430G2544IDA38R implements a 16-bit CPU with constant generators for optimized code efficiency and five low-power modes (LPM0–LPM4) enabling sub-µA standby operation. Its clock system integrates a digitally controlled oscillator (DCO) calibrated to 1, 8, 12, and 16 MHz, plus LFXT1 (32-kHz crystal) and VLO oscillators - all selectable via BCSCTL registers.
Peripherals are tightly synchronized: the ADC10 uses its own dedicated clock (ADC10CLK) and supports autoscan across 12 analog channels with data transfer controller (DTC) offloading CPU during conversions; USCI modules support simultaneous asynchronous (UART/LIN) and synchronous (SPI/I²C) communication with automatic baud-rate detection and IrDA encoding/decoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables deterministic real-time control and efficient C compilation |
| Flash / RAM | 16KB + 256B flash memory with 100k-cycle endurance; 512B RAM - sufficient for firmware + sensor buffer without external memory |
| ADC10 Resolution & Speed | 10-bit SAR ADC with 200-ksps sampling rate and integrated reference - supports precision analog sensing at ≤5-µs conversion time per sample |
| Active Current @ 1 MHz | 270 µA at 1 MHz, 2.2 V - enables >1-year battery life in coin-cell–powered wake-on-event applications |
| Standby Current (LPM3) | 1 µA with ACLK active (32-kHz crystal) - maintains real-time clock and interrupt-ready state with minimal energy drain |
| I/O Count & Type | 32 GPIO pins with configurable pullup/pulldown, Schmitt-trigger inputs, and interrupt capability on all ports - simplifies direct sensor interfacing without external conditioning |
| Operating Voltage | 1.8 V to 3.6 V supply range - compatible with single Li-ion, two alkaline, or regulated 3.3-V systems |
Pinout & Package
TSSOP-38 (DA) package: 12.5 mm × 6.2 mm body, 0.65-mm pitch, exposed thermal pad not present. Pinout validated per TI SLAS892C Rev. C (Section 4.1, Figure 4-1 and Table 4-1).
| 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 - eliminates software timing jitter |
| RST/NMI/SBWTDIO | Reset / nonmaskable interrupt / Spy-Bi-Wire data I/O | Single-pin debug interface supports in-system programming and real-time debugging without dedicated JTAG header |
| XIN/P2.6 & XOUT/P2.7 | LFXT1 crystal oscillator terminals | Supports 32.768-kHz watch crystal for precise RTC and LPM3 wakeup - no external load capacitors required when using internal capacitance |
| P3.4/UCA0TXD & P3.5/UCA0RXD | USCI_A0 UART transmit/receive | Dedicated hardware UART with automatic baud-rate detection - enables robust host communication over variable-speed links (e.g., BLE modules) |
| P2.3/TA1/A3/VREF− & P2.4/TA2/A4/VREF+ | ADC reference voltage inputs / analog channel inputs | Allows external reference sourcing or internal VREF± routing - supports ratiometric sensor measurements with <±0.2% drift |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power LPM4 mode | 0.1 µA with RAM retention - preserves context during multi-week sleep intervals in environmental monitoring nodes |
| Integrated DCO calibration | Factory-trimmed DCO frequencies at 1/8/12/16 MHz - eliminates need for external crystal in cost-sensitive applications |
| Data Transfer Controller (DTC) | Automatically moves ADC results to RAM without CPU intervention - reduces active time by up to 40% in continuous-sampling use cases |
| Bootstrap Loader (BSL) | UART-based firmware update via P3.4/P3.5 - enables field upgrades without debugger hardware or physical access |
| Programmable code security fuse | One-time programmable lock prevents flash read-out - protects proprietary sensor algorithms and calibration data |
Applications
| Wireless Sensor Node | Industrial Condition Monitoring |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via sub-GHz RF transceiver every 5 minutes. IC Role / Device Role / Timing Role: Main controller executing sensor acquisition, ADC conversion, data preprocessing, and SPI-driven RF packet assembly; wakes from LPM3 on timer interrupt. Use Value: 1 µA LPM3 current extends CR2032 battery life beyond 2 years; integrated USCI_A0 handles UART debug logging without extra level-shifting ICs. | Use Scenario: Vibration and current sensing on motor drive cabinet with local LED status and UART diagnostics. IC Role / Device Role / Timing Role: Real-time analog acquisition frontend with ADC10 autoscan across 8 channels; Timer_B generates PWM for LED dimming; USCI_B0 interfaces I²C temperature sensor. Use Value: 32 GPIO with Schmitt-trigger inputs tolerate noisy industrial environments; 16-MHz DCO supports fast FFT computation on vibration samples. |
| Smart Metering Endpoint | Portable Medical Diagnostic Device |
Use Scenario: Gas/water meter with pulse counting, pressure sensing, and optical IR communication to handheld reader. IC Role / Device Role / Timing Role: Pulse capture via P1.1/TA0 edge detection; ADC10 reads piezoresistive pressure sensor; USCI_A0 drives IR LED with precise timing for IrDA compliance. Use Value: Ultra-fast <1-µs wakeup from LPM4 ensures immediate response to flow pulses; built-in IrDA encoder eliminates external modulation IC. | Use Scenario: Handheld blood glucose meter with electrochemical strip interface, LCD display, and USB charging indicator. IC Role / Device Role / Timing Role: Precision 10-bit ADC measures strip current with internal reference; Timer_A generates LCD segment drive signals; BSL enables regulatory-compliant firmware updates. Use Value: 1.8–3.6 V operation matches LiPo battery discharge curve; 512B RAM holds calibration coefficients and last-measurement history without external storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2444IDA38R | 8KB+256B flash, same 512B RAM, identical peripherals and pinout | Limited firmware footprint; suitable for fixed-function sensors with minimal processing | Select when application logic fits within 8KB and future feature expansion is unnecessary |
| MSP430G2553IRHA40R | 40-pin QFN, 16KB+256B flash, same core/peripherals but adds comparator_A+ and enhanced USCI | Requires PCB redesign; better for designs needing analog window comparators or dual USCI instances | Choose only if additional analog compare functionality or package thermal performance justifies layout change |
Compared with MSP430G2444IDA38R, the MSP430G2544IDA38R provides 2× flash headroom for OTA updates and algorithm iteration; versus MSP430G2553IRHA40R, it retains identical functionality in a mature, lower-cost TSSOP package with proven board-level reliability in high-volume sensor assemblies.
Availability
MSP430G2544IDA38R is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial condition monitoring, smart metering endpoints, and portable medical diagnostic devices requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2544IDA38R 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 with emphasis on power efficiency, signal integrity, and industrial-grade reliability.
The MSP430G2xx family targets ultra-low-power embedded applications - especially battery-operated measurement, sensing, and control systems where extended runtime and deterministic real-time behavior are critical design requirements.
FAQ
What is the maximum operating frequency of the MSP430G2544IDA38R?
The MSP430G2544IDA38R supports a maximum MCLK frequency of 16 MHz when VCC ≥ 3.3 V, achieved via factory-calibrated DCO settings. At 2.7 V, max frequency is 12 MHz; at 1.8 V, it drops to 4.15 MHz. These limits are enforced by the CPU's timing constraints and are specified in Section 5.3 of the SLAS892C datasheet. The MSP430G2544IDA38R does not require external crystals to reach 16 MHz - internal DCO suffices.
Does the MSP430G2544IDA38R support hardware UART with automatic baud-rate detection?
Yes, the MSP430G2544IDA38R's USCI_A0 module supports enhanced UART mode with automatic baud-rate detection (ABD), compliant with LIN 2.x standards. This feature allows the MSP430G2544IDA38R to synchronize to incoming frame headers without prior knowledge of bit rate - essential for interoperability with automotive or industrial master nodes. ABD is enabled via UCA0CTL1 |= UCSWRST followed by UCOS16 and UCBRFx/UCBRFx register configuration.
How many analog input channels does the ADC10 on the MSP430G2544IDA38R support?
The ADC10 peripheral in the MSP430G2544IDA38R supports 12 analog input channels: A0 through A7 on Ports P2 and P3, plus A12 through A15 mapped to P4.3–P4.6. Channel selection is controlled via ADC10INCHx bits in ADC10CTL1. All channels share the same 10-bit resolution and 200-ksps sampling rate, and autoscan mode allows sequential conversion across any subset without CPU intervention.
Can the MSP430G2544IDA38R retain RAM contents during deep-sleep mode?
Yes, the MSP430G2544IDA38R retains full 512B RAM contents in LPM4 mode (Off mode), drawing only 0.1 µA at 2.2 V. This is achieved by asserting CPUOFF = 1, SCG0 = 1, SCG1 = 1, and OSCOFF = 1 while keeping VCC applied. RAM retention is guaranteed across the full –40°C to 85°C operating temperature range and supports rapid wake-up (<1 µs) to restore full execution context - critical for event-driven sensor applications.
Is the MSP430G2544IDA38R pin-compatible with other devices in the MSP430G2x44 family?
Yes, the MSP430G2544IDA38R shares identical pinout, electrical characteristics, and peripheral mapping with MSP430G2444IDA38R and MSP430G2744IDA38R in the 38-pin TSSOP (DA) package. Flash size (8KB/16KB/32KB) and RAM (512B/1KB) differ, but all three are drop-in replacements at the board level - enabling scalable firmware development across product tiers without hardware revision.
MSP430G2544IDA38R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- 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:
- 16KB (16K 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:
MSP430G2544IDA38R FAQ
1.How can I place an order for MSP430G2544IDA38R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2544IDA38R 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 MSP430G2544IDA38R reliable?
The price and inventory of MSP430G2544IDA38R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2544IDA38R is usually 5 days.
3.What payment methods are accepted for MSP430G2544IDA38R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2544IDA38R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2544IDA38R?
MSP430G2544IDA38R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2544IDA38R 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 MSP430G2544IDA38R?
For technical support, including MSP430G2544IDA38R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2544IDA38R requirements.
6.How does Aetrix verify that MSP430G2544IDA38R is sourced from the original manufacturer or authorized distributors?
All MSP430G2544IDA38R 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 MSP430G2544IDA38R meets industry standards.
7.What is the process for return or replacement of MSP430G2544IDA38R?
All MSP430G2544IDA38R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2544IDA38R, 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 MSP430G2544IDA38R part is unused and in its original packaging.
Return procedure for MSP430G2544IDA38R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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