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Texas Instruments MSP430G2544IDA38
- Part No.:
- MSP430G2544IDA38
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430G2544IDA38.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,628
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Product details
Overview
MSP430G2544IDA38 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 16KB+256B 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 32 I/O pins in a 38-pin TSSOP package. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems requiring fast wake-up (<1 µs) and analog signal acquisition.
For engineers reviewing the MSP430G2544IDA38 datasheet, MSP430G2544IDA38 pinout, MSP430G2544IDA38 application, or MSP430G2544IDA38 equivalent, key selection criteria include calibrated DCO frequencies up to 16 MHz, integrated brownout detection, programmable code security fuse, Spy-Bi-Wire on-chip emulation, and support for LIN-compliant UART auto-baud detection in sensor front-end designs.
Technical Context
The MSP430G2544IDA38 implements a digitally controlled oscillator (DCO) with four factory-calibrated frequencies (1/8/12/16 MHz), enabling rapid transition from LPM3/LPM4 to active mode in under 1 µs. Its clock system integrates LFXT1 (32-kHz crystal), VLO, HF XTAL (up to 16 MHz), and external resistor tuning via P2.5/ROSC.
It features two independent 16-bit timers-Timer_A3 with three capture/compare registers and Timer_B3 with three capture/compare registers plus shadow registers-and a USCI module with dual channels (USCI_A0 for UART/LIN/IrDA/SPI, USCI_B0 for SPI/I²C), each supporting independent clock sources and asynchronous/synchronous operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables efficient C-code execution and deterministic real-time response |
| Flash / RAM | 16KB + 256B flash memory and 512B RAM; sufficient for standalone sensor firmware with ADC data buffering and protocol stack |
| ADC10 | 10-bit, 200-ksps SAR ADC with 12-channel autoscan, internal reference, sample-and-hold, and data transfer controller (DTC); supports continuous analog monitoring without CPU intervention |
| Power Modes | Active mode: 270 µA @ 1 MHz, 2.2 V; Standby (LPM3): 1 µA; Off (LPM4 w/ RAM retention): 0.1 µA; enables multi-year battery life in intermittent-sampling applications |
| Operating Voltage | 1.8 V to 3.6 V supply range; compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline power sources |
| Package | TSSOP-38 (DA); 12.5 mm × 6.2 mm footprint with 0.65 mm pitch; suitable for compact PCB layouts in space-constrained sensor nodes |
| Peripherals | Dual 16-bit timers (TA3/TB3), USCI_A0 (UART/LIN/IrDA/SPI), USCI_B0 (SPI/I²C), brownout detector, BSL, and on-chip emulation; eliminates need for external timing, communication, or debug components |
Pinout & Package
The MSP430G2544IDA38 is housed in a 38-pin Thin Shrink Small Outline Package (TSSOP-DA) with exposed pad not present; body size 12.5 mm × 6.2 mm, 0.65 mm lead pitch, and JEDEC MO-153 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK | Timer_A clock input / ADC conversion clock | Enables synchronous sampling triggered by timer events; supports precise timing-critical analog acquisition |
| P2.3/TA1/A3/VREF− | Analog input A3 / negative ADC reference | Allows differential ADC measurements using internal VREF− or external reference; improves noise immunity in noisy environments |
| P3.4/UCA0TXD/UCA0SIMO | USCI_A0 transmit data / SPI master out | Single pin supports full-duplex UART communication or SPI master interface; reduces routing complexity in mixed-protocol designs |
| RST/NMI/SBWTDIO | Reset / non-maskable interrupt / Spy-Bi-Wire data I/O | Combines reset functionality, NMI capability, and 2-wire debug interface on one pin; simplifies board-level reset and programming circuitry |
| TEST/SBWTCK | Spy-Bi-Wire test clock | Enables in-system programming and debugging using TI's MSP-FET430UIF or similar tools without JTAG header footprint |
| AVCC / AVSS | Analog power supply / analog ground | Dedicated analog rails isolate sensitive ADC and reference circuitry from digital switching noise; critical for <1 LSB integral linearity |
Key Features
| Feature | Design Value |
|---|---|
| Calibrated DCO frequencies | Four factory-trimmed DCO settings (1/8/12/16 MHz) eliminate need for external crystal in cost-sensitive designs while maintaining ±2% accuracy over temperature |
| USCI_A0 LIN support | Hardware-accelerated automatic baud-rate detection enables robust communication with automotive LIN bus masters without software overhead |
| ADC10 Data Transfer Controller (DTC) | Automatically moves converted results to RAM without CPU involvement; frees processor for sensor fusion or wireless transmission tasks |
| Ultra-low-power standby mode | 1 µA LPM3 current with ACLK active allows real-time clocking and periodic wake-up from 32-kHz crystal - ideal for duty-cycled environmental sensors |
| Programmable security fuse | On-chip fuse prevents unauthorized read-out of flash contents; meets basic firmware IP protection requirements for OEM sensor modules |
Applications
| Wireless Sensor Node | Industrial Temperature Monitor |
|---|---|
Use Scenario: Battery-powered node measuring ambient temperature, humidity, and pressure, then transmitting data via sub-GHz RF transceiver. IC Role / Device Role / Timing Role: Central MCU managing sensor polling, ADC conversion, data preprocessing, and SPI control of RF IC; uses Timer_B for precise RF packet timing. Use Value: 0.1 µA LPM4 retention extends 2xAA battery life beyond 5 years; integrated USCI_A0 UART interfaces directly with RF module's command interface. | Use Scenario: DIN-rail mounted enclosure monitoring motor winding temperature using thermistors and RTDs across multiple zones. IC Role / Device Role / Timing Role: Analog front-end controller acquiring 8-channel thermistor voltages via ADC10 autoscan; performs linearization and stores calibrated values in flash. Use Value: Internal 1.5-V reference and VREF± inputs enable ratiometric measurements immune to supply drift; 12-channel ADC supports expansion to 16 sensors via multiplexer. |
| Smart Meter Tamper Detection | Portable Gas Detector |
Use Scenario: Utility meter detecting magnetic tampering via Hall-effect sensor and accelerometer, triggering secure event logging. IC Role / Device Role / Timing Role: Real-time event processor capturing analog/digital tamper signals, timestamping with LPM3 + 32-kHz crystal, and writing to protected flash sectors. Use Value: Brownout detector ensures reliable operation during voltage sags; security fuse prevents extraction of tamper logs; 1 µA LPM3 enables always-on monitoring. | Use Scenario: Handheld CO/H₂S detector performing electrochemical sensor biasing, analog signal conditioning, and audible alarm activation. IC Role / Device Role / Timing Role: Mixed-signal controller generating precise bias voltages via DAC-like GPIO control, digitizing sensor output at 100-Hz rate, and driving buzzer via Timer_A PWM. Use Value: 10-bit ADC with internal reference achieves ±1% gas concentration accuracy; ultra-fast wake-up (<1 µs) enables responsive alarm triggering from sleep. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2444IDA38 | 8KB+256B flash, same peripherals and pinout; lacks 12/16-MHz DCO calibration | Suitable for simpler firmware with smaller memory footprint; limited high-speed processing capability | Select when application firmware fits within 8KB and does not require >8-MHz DCO operation |
| MSP430G2553IPW28 | 28-pin TSSOP, 16KB+256B flash, but only 20 I/O pins and no Timer_B3 or USCI_B0 | Compact layout advantage; insufficient for dual-protocol (UART+I²C) or 32-I/O sensor hub designs | Select only if pin count and peripheral set align - not a drop-in replacement due to reduced I/O and missing USCI_B0 |
Compared with MSP430G2444IDA38 and MSP430G2553IPW28, the MSP430G2544IDA38 uniquely balances 16KB flash capacity, full 32-I/O availability, dual USCI channels, and Timer_B3 - making it optimal for feature-rich, field-upgradable sensor nodes where memory headroom and interface flexibility are critical.
Availability
MSP430G2544IDA38 is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial temperature monitors, smart meter tamper detection, and portable gas detectors requiring stable component supply, long-term manufacturability, and TI-qualified production lots.
Supply support for MSP430G2544IDA38 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 over 90 years of innovation in low-power design.
The MSP430G2x44 product line was engineered specifically for ultra-low-power, cost-sensitive sensor and measurement applications - emphasizing extended battery life, integrated analog peripherals, and minimal external component count.
FAQ
What is the maximum operating frequency of the MSP430G2544IDA38?
The MSP430G2544IDA38 supports a maximum MCLK frequency of 16 MHz when VCC ≥ 3.3 V and duty cycle is 50% ±10%. This is achieved using the factory-calibrated DCO. The device also supports lower frequencies (1/8/12 MHz) with tighter tolerance across temperature and voltage, as documented in Section 5.15 of the SLAS892C datasheet.
Does the MSP430G2544IDA38 support hardware UART auto-baud detection?
Yes, the MSP430G2544IDA38's USCI_A0 module supports LIN-compliant automatic baud-rate detection in enhanced UART mode. This feature allows the MSP430G2544IDA38 to synchronize to incoming LIN headers without prior knowledge of bit rate, reducing host-side configuration overhead in automotive and industrial networked sensor applications.
How many analog input channels does the ADC10 in the MSP430G2544IDA38 support?
The ADC10 in the MSP430G2544IDA38 supports 12 analog input channels: A0–A7 on Ports P2 and P3, plus A12–A15 mapped to P4.3–P4.6. All channels are accessible via the 38-pin TSSOP package, and the autoscan function enables sequential conversion without software intervention.
Is the MSP430G2544IDA38 pin-compatible with other devices in the MSP430G2x44 family?
Yes, the MSP430G2544IDA38 shares identical pinout and package (TSSOP-38) with MSP430G2444IDA38 and MSP430G2744IDA38. All three variants use the same DA package footprint, signal mapping, and power/ground pin locations - enabling hardware reuse across memory-tier variants in scalable product families.
What debug interface does the MSP430G2544IDA38 use?
The MSP430G2544IDA38 uses the 2-wire Spy-Bi-Wire interface via pins RST/NMI/SBWTDIO and TEST/SBWTCK. This eliminates the need for a full 4-wire JTAG connector, reduces PCB space, and supports in-system programming and real-time debugging using TI's MSP-FET430UIF or compatible tools.
MSP430G2544IDA38 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Tube
- 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:
MSP430G2544IDA38 FAQ
1.How can I place an order for MSP430G2544IDA38 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2544IDA38 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 MSP430G2544IDA38 reliable?
The price and inventory of MSP430G2544IDA38 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2544IDA38 is usually 5 days.
3.What payment methods are accepted for MSP430G2544IDA38?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2544IDA38 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2544IDA38?
MSP430G2544IDA38 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2544IDA38 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 MSP430G2544IDA38?
For technical support, including MSP430G2544IDA38 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2544IDA38 requirements.
6.How does Aetrix verify that MSP430G2544IDA38 is sourced from the original manufacturer or authorized distributors?
All MSP430G2544IDA38 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 MSP430G2544IDA38 meets industry standards.
7.What is the process for return or replacement of MSP430G2544IDA38?
All MSP430G2544IDA38 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2544IDA38, 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 MSP430G2544IDA38 part is unused and in its original packaging.
Return procedure for MSP430G2544IDA38:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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