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Texas Instruments MSP430F2491TRGCT
- Part No.:
- MSP430F2491TRGCT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430F2491TRGCT.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:144
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Product details
Overview
MSP430F2491TRGCT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 60KB+256B flash, 2KB RAM, and a 16-bit Timer_B with seven capture/compare registers. It features two USCI modules (UART/IrDA/SPI/I²C), on-chip comparator, supply voltage supervisor, and operates from 1.8 V to 3.6 V. It targets battery-powered sensor nodes and portable instrumentation requiring sub-1µs wake-up and precise analog measurement.
For engineers reviewing the MSP430F2491TRGCT datasheet, MSP430F2491TRGCT pinout, MSP430F2491TRGCT application, or MSP430F2491TRGCT equivalent, key selection criteria include its ADC12 absence (vs. F249), 64-pin QFN package, JTAG debug support, and compatibility with MSP-FET430UIF programming tools.
Technical Context
The MSP430F2491TRGCT implements the MSP430x2xx architecture with five low-power modes, a calibrated DCO enabling <1 µs active-mode wake-up, and dual USCI modules supporting independent UART, SPI, and I²C protocols. Its Timer_B includes shadow registers for glitch-free PWM updates.
It integrates a hardware multiplier, 16-bit Timer_A with three capture/compare registers, and a comparator with internal reference. Unlike the MSP430F249, the F2491 omits the ADC12 module-confirmed across all documentation-and retains full digital peripheral functionality including SVS/SVM and BSL.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables high code efficiency in memory-constrained embedded firmware. |
| Flash / RAM | 60KB+256B flash + 2KB RAM; sufficient for complex sensor fusion algorithms with retained bootloader space. |
| Supply Range | 1.8 V to 3.6 V; supports direct Li-ion/Li-poly battery operation without external regulation. |
| Active Current | 270 µA at 1 MHz, 2.2 V; enables multi-year battery life in duty-cycled telemetry applications. |
| Standby Current | 0.3 µA (VLO mode); allows long-term data logging with periodic wake-up via RTC or external interrupt. |
| Wake-up Time | <1 µs from standby; critical for responsive event-driven systems like industrial alarm monitors. |
| Package | 64-pin QFN (RGC); 9 mm × 9 mm footprint with exposed thermal pad for improved power dissipation in compact designs. |
Pinout & Package
64-pin QFN (RGC) package with exposed thermal pad connected to DVSS. Pin functions validated per TI SLAS547I Rev. December 2012, Table 3 (MSP430F24x/MSP430F2410).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt | Hardware reset input and NMI source; also triggers bootstrap loader when held during power-up. |
| TCK/TMS/TDI/TDO | JTAG Debug Interface | Full 4-wire JTAG for emulation, flash programming, and real-time debugging via MSP-FET430UIF. |
| P1.x–P6.x | General-Purpose I/O | 48 total GPIO pins with interrupt capability, configurable pull-up/down, and peripheral multiplexing (e.g., P1.1/TA0). |
| USCI_A0/A1, USCI_B0/B1 | Serial Communication | Dual UART/IrDA/SPI/I²C interfaces; A0/A1 support auto-baud detection; B0/B1 support master/slave I²C addressing. |
| AVCC/AVSS/DVCC/DVSS | Power Supply Rails | Separate analog/digital supplies reduce noise coupling into comparator and clock circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Operation | 0.1 µA off-mode (RAM retention) enables maintenance of state during extended sleep without backup battery. |
| Programmable Supply Monitor | SVS with user-selectable threshold prevents erratic behavior during brownout conditions in unregulated power systems. |
| On-Chip Comparator_A+ | High-precision comparator with internal reference and hysteresis supports battery voltage monitoring and zero-crossing detection. |
| Two USCI Modules | Independent UART/SPI/I²C controllers allow simultaneous host communication and sensor bus management without CPU overhead. |
| Hardware Multiplier | MPY/MPYS/MAC/MACS instructions accelerate math-intensive tasks like FIR filtering and PID control loops. |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered electricity/water meter collecting pulse counts and temperature over 10+ years. IC Role / Device Role / Timing Role: Main system controller managing RTC, LCD driver, optical pulse interface, and secure data logging. Use Value: Sub-1µs wake-up and 0.3 µA standby current extend battery life beyond 15 years while maintaining time accuracy via ACLK from 32-kHz crystal. | Use Scenario: Wireless vibration sensor node on rotating machinery, sampling at 1 kHz and transmitting alerts via UART-to-LoRa bridge. IC Role / Device Role / Timing Role: Signal acquisition and preprocessing unit using Timer_B for precise sampling intervals and USCI_A0 for serial output. Use Value: On-chip comparator replaces external op-amp for zero-crossing detection; dual USCI avoids external level-shifting logic. |
| Portable Gas Detector | Medical Patient Monitor |
Use Scenario: Handheld CO/H₂S detector with electrochemical sensors, buzzer, and LED indicators. IC Role / Device Role / Timing Role: Analog front-end controller performing sensor biasing, comparator-based threshold triggering, and alarm sequencing. Use Value: Integrated SVS ensures reliable operation during battery voltage sag; programmable brownout level matches sensor bias requirements. | Use Scenario: Low-power wearable ECG patch acquiring analog leads and transmitting processed heart rate via UART to smartphone. IC Role / Device Role / Timing Role: Real-time signal conditioner and communication hub interfacing with analog front-end and Bluetooth module. Use Value: Hardware multiplier accelerates QRS detection algorithm; separate AVCC/AVSS rails minimize noise in analog acquisition path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F249TRGCT | Includes 12-bit ADC12 with 8 channels; otherwise identical flash/RAM/peripherals and pinout. | Required where analog sensor inputs (e.g., thermistor, pressure transducer) must be digitized on-chip. | Select F249 if ADC12 is needed; F2491 is preferred when ADC is unnecessary and cost/power optimization is critical. |
| MSP430F2410TRGCT | 56KB+256B flash, 4KB RAM, same peripherals except no USCI_A1 or USCI_B1; identical pinout and ADC12 omission. | Suitable for simpler control tasks with larger RAM needs but fewer serial interfaces. | Choose F2410 when additional RAM outweighs dual-USCI requirement; F2491 offers higher flash for firmware with encryption or OTA update capability. |
Compared with MSP430F249TRGCT and MSP430F2410TRGCT, the MSP430F2491TRGCT delivers the highest flash density among ADC12-free variants in the RGC package, making it optimal for feature-rich firmware deployments where analog conversion is handled externally.
Availability
MSP430F2491TRGCT is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, portable gas detection, and medical patient monitors requiring stable component supply and long-term lifecycle support.
Supply support for MSP430F2491TRGCT 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 microcontroller innovation.
The MSP430F2491TRGCT belongs to the MSP430x2xx ultra-low-power MCU family, designed specifically for battery-operated measurement and sensing applications demanding nanowatt-level power management and robust mixed-signal integration.
FAQ
What is the key functional difference between MSP430F2491TRGCT and MSP430F249TRGCT?
The MSP430F2491TRGCT omits the ADC12 analog-to-digital converter module present in the MSP430F249TRGCT. All other specifications-including 60KB+256B flash, 2KB RAM, dual USCI, Timer_B with seven capture/compare registers, and 64-pin QFN package-are identical. This makes the MSP430F2491TRGCT ideal for applications where analog signals are conditioned externally or not required.
Does MSP430F2491TRGCT support JTAG debugging and in-system programming?
Yes, the MSP430F2491TRGCT supports full JTAG debugging and programming via TCK, TMS, TDI, and TDO pins. It is compatible with standard TI tools including MSP-FET430UIF and MSP-GANG430. The device includes an Embedded Emulation Module (EEM) enabling real-time breakpoints, register inspection, and flash memory programming without external hardware modification.
What power supply configurations does MSP430F2491TRGCT require?
The MSP430F2491TRGCT requires four dedicated supply connections: DVCC and DVSS for digital circuitry, AVCC and AVSS for analog circuitry (including comparator). Separating analog and digital grounds reduces noise coupling. The device operates across 1.8 V to 3.6 V; AVCC must be ≥ DVCC to prevent latch-up, and both AVCC and DVCC must be decoupled with 100 nF ceramic capacitors near their respective pins.
Can MSP430F2491TRGCT drive an LCD directly?
No, the MSP430F2491TRGCT does not include an integrated LCD controller or segment drivers. Unlike some MSP430 variants (e.g., MSP430F4xx or F6xx families), this device lacks LCD peripheral hardware. External LCD drivers or segment-expanding ICs are required for display interfacing. Its GPIO can be used for simple LED indicators or character LCD control via software bit-banging.
Is the MSP430F2491TRGCT pin-compatible with other devices in the MSP430F24x family?
Yes, the MSP430F2491TRGCT shares identical pinout and package (64-pin QFN, RGC) with MSP430F247, MSP430F2471, MSP430F248, MSP430F2481, MSP430F249, MSP430F2410, and all corresponding PM-package variants. This enables hardware reuse across firmware variants-e.g., migrating from ADC-equipped F249 to ADC-free F2491 without PCB revision.
MSP430F2491TRGCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- MSP430F2xx
- 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, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 60KB (60K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2491TRGCT FAQ
1.How can I place an order for MSP430F2491TRGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2491TRGCT 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 MSP430F2491TRGCT reliable?
The price and inventory of MSP430F2491TRGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2491TRGCT is usually 5 days.
3.What payment methods are accepted for MSP430F2491TRGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2491TRGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2491TRGCT?
MSP430F2491TRGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2491TRGCT 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 MSP430F2491TRGCT?
For technical support, including MSP430F2491TRGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2491TRGCT requirements.
6.How does Aetrix verify that MSP430F2491TRGCT is sourced from the original manufacturer or authorized distributors?
All MSP430F2491TRGCT 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 MSP430F2491TRGCT meets industry standards.
7.What is the process for return or replacement of MSP430F2491TRGCT?
All MSP430F2491TRGCT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2491TRGCT, 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 MSP430F2491TRGCT part is unused and in its original packaging.
Return procedure for MSP430F2491TRGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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