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Texas Instruments MSP430F2491TRGCR
- Part No.:
- MSP430F2491TRGCR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430F2491TRGCR.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,625
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Product details
Overview
MSP430F2491TRGCR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 60KB+256B flash memory, 2KB RAM, a 16-bit Timer_B with seven capture/compare registers and shadow registers, four USCI modules (two UART/IrDA/SPI, two SPI/I²C), and on-chip comparator. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems and portable measurement devices.
For engineers reviewing the MSP430F2491TRGCR datasheet, MSP430F2491TRGCR pinout, MSP430F2491TRGCR application, or MSP430F2491TRGCR equivalent, key selection criteria include ADC12 absence, 64-pin QFN package compatibility, Timer_B7 capability, dual USCI_A/USCI_B interface support, and ultra-low standby current (0.3 µA).
Technical Context
The MSP430F2491TRGCR implements the MSP430x2xx architecture with a 16-bit CPU, constant generators, and five low-power modes optimized for extended battery life. Its basic clock system includes internal DCO calibrated to ±1% at 1 MHz, 32-kHz crystal support (XT1), and optional high-frequency XT2 oscillator up to 16 MHz.
This device belongs to the MSP430F24x1 subfamily: identical to MSP430F24x but with ADC12 module omitted. It retains full Timer_B7 functionality, dual USCI_A and USCI_B peripherals, comparator, SVS/SVM, and JTAG/EEM debugging - making it suitable for cost-sensitive, analog-light embedded control applications.
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 | 60KB+256B flash + 2KB RAM; supports in-system programming and sufficient space for complex sensor firmware with bootloader. |
| Supply Voltage | 1.8 V to 3.6 V; compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline power sources without regulation. |
| Active Current | 270 µA at 1 MHz, 2.2 V; enables >1-year operation on coin-cell batteries in duty-cycled sensing nodes. |
| Standby Current | 0.3 µA with VLO; allows rapid wake-up (<1 µs) while preserving RAM state during long idle intervals. |
| Timer_B | 16-bit Timer_B with seven capture/compare registers and shadow registers; supports precise PWM generation, input capture, and event sequencing. |
| USCI Peripherals | Four USCI modules: USCI_A0/A1 (UART/IrDA/SPI), USCI_B0/B1 (SPI/I²C); enables simultaneous serial communication with multiple sensors and host interfaces. |
Pinout & Package
Package: 64-pin QFN (RGC), 9 mm × 9 mm, 0.5 mm pitch, exposed thermal pad (to be connected to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt | Active-low reset input; also serves as NMI source or BSL entry trigger via specific edge sequence. |
| TCK/TMS/TDI/TDO | JTAG Debug Interface | Full 4-wire JTAG for programming, emulation, and boundary-scan testing; supports MSP-FET430UIF and MSP-GANG430. |
| 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, P3.4/UCA0TXD). |
| AVCC/AVSS | Analog Power Supply | Dedicated analog supply rails (64/62) isolate ADC reference domain - critical even though ADC12 is absent, as comparator uses same rails. |
| XIN/XOUT | Low-Frequency Crystal | Connects to 32.768-kHz watch crystal for ACLK; enables ultra-low-power real-time clock and calendar functions. |
| XT2IN/XT2OUT | High-Frequency Crystal | Supports external 4–16 MHz crystal/resonator for precise MCLK/SMCLK generation when higher throughput is required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Operation | 0.1 µA off-mode (RAM retention) and 0.3 µA standby enable multi-year battery life in intermittent-sensing applications. |
| Bootstrap Loader (BSL) | On-chip UART-based BSL allows field firmware updates without JTAG hardware - reduces production and service costs. |
| Dual USCI_A + Dual USCI_B | Independent UART/IrDA/SPI and SPI/I²C channels permit concurrent communication with BLE module (UART), EEPROM (I²C), and display (SPI). |
| Comparator_A+ | Integrated analog comparator with internal reference and hysteresis supports threshold detection, battery monitoring, and wake-on-event without ADC overhead. |
| SVS/SVM Monitoring | Programmable supply voltage supervisor with adjustable trip level prevents erratic operation during brownout or battery depletion. |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered gas/water meter with pulse counting, temperature compensation, and RF telemetry. IC Role / Device Role / Timing Role: Main controller managing sensor acquisition, data logging, low-power scheduling, and UART-to-RF bridge timing. Use Value: 0.3 µA standby and <1 µs wake-up minimize average current; dual USCI handles both sensor SPI and RF UART simultaneously. | Use Scenario: Wireless vibration/temperature node mounted on motor housing with 6-month battery life requirement. IC Role / Device Role / Timing Role: Real-time sensor aggregator using Timer_B7 for synchronized sampling and USCI_B1 for I²C sensor reads. Use Value: Comparator_A+ detects over-temperature events and wakes CPU instantly; SVS prevents data corruption during voltage sag. |
| Portable Medical Device | Energy-Harvesting IoT Endpoint |
Use Scenario: Handheld blood glucose monitor with LCD, button interface, and USB charging-aware power management. IC Role / Device Role / Timing Role: System manager coordinating analog front-end, display refresh, and charge-status polling via USCI_A0. Use Value: 1.8 V minimum supply allows direct connection to Li-ion battery; BSL enables post-deployment calibration updates via USB-UART adapter. | Use Scenario: Solar-powered environmental sensor sending hourly readings via LoRaWAN gateway. IC Role / Device Role / Timing Role: Energy-aware scheduler using ACLK from XIN to time sleep intervals and wake precisely for sensor read + transmit burst. Use Value: 32-kHz crystal support and ultra-low 0.3 µA standby maximize harvestable energy utilization; dual USCI isolates sensor I²C from LoRa SPI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F249TRGCR | Includes full 12-bit ADC12 module (8-channel, sample-and-hold, internal reference); otherwise identical flash/RAM/peripherals. | Required where analog sensor signal digitization (e.g., thermistor, strain gauge) is performed on-chip. | Select MSP430F249TRGCR if ADC12 functionality is needed; MSP430F2491TRGCR saves cost and power when external ADC or comparator-only sensing suffices. |
| MSP430F235TRGCR | Reduced resources: 16KB+256B flash, 1KB RAM, one USCI module (USCI_A0 only), no Timer_B shadow registers. | Suitable for simpler control tasks with lower memory and interface demands (e.g., basic timer-based lighting control). | Choose MSP430F235TRGCR for cost-constrained, low-complexity designs; MSP430F2491TRGCR provides scalability for future feature expansion. |
Compared with MSP430F249TRGCR, the MSP430F2491TRGCR removes ADC12 to reduce power and cost while retaining full Timer_B7 and dual-USCI capability; versus MSP430F235TRGCR, it delivers 3.75× more flash, double RAM, and twice the serial interface count - enabling richer firmware and multi-peripheral coordination.
Availability
MSP430F2491TRGCR is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, and portable medical devices requiring stable component supply, long-term lifecycle support, and consistent QFN packaging.
Supply support for MSP430F2491TRGCR 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 and reliability.
The MSP430F2491TRGCR belongs to the MSP430x2xx ultra-low-power MCU family, designed specifically for battery-operated measurement and sensing applications where nanowatt-level standby and sub-microsecond wake-up are essential.
FAQ
What distinguishes MSP430F2491TRGCR from MSP430F249TRGCR?
The MSP430F2491TRGCR is functionally identical to the MSP430F249TRGCR except that the ADC12 analog-to-digital converter module is omitted. All other features - including 60KB+256B flash, 2KB RAM, Timer_B7 with shadow registers, four USCI modules, comparator, and low-power modes - remain fully implemented in the MSP430F2491TRGCR.
Does MSP430F2491TRGCR support crystal oscillators?
Yes, the MSP430F2491TRGCR supports two crystal oscillator configurations: a 32.768-kHz watch crystal on XIN/XOUT for ACLK, and an optional 4–16 MHz high-frequency crystal on XT2IN/XT2OUT for MCLK/SMCLK. Both are explicitly documented in the SLAS547I datasheet for this device.
What debug interfaces does MSP430F2491TRGCR provide?
The MSP430F2491TRGCR includes a full 4-wire JTAG interface (TCK, TMS, TDI, TDO) compliant with IEEE 1149.1, supporting programming, real-time emulation, and boundary-scan via tools like MSP-FET430UIF and MSP-GANG430. No SWD or proprietary debug protocol is used.
Can MSP430F2491TRGCR operate from a single 2.0-V supply?
Yes, the MSP430F2491TRGCR is fully specified to operate across 1.8 V to 3.6 V. At 2.0 V, it maintains all core functionality including 16-MHz DCO operation (calibrated), Timer_B7, USCI peripherals, and comparator - with active current scaling linearly per supply voltage.
Is the QFN package of MSP430F2491TRGCR RoHS-compliant and lead-free?
Yes, the MSP430F2491TRGCR in the RGC (64-pin QFN) package is RoHS-compliant and lead-free, as confirmed by Texas Instruments' official packaging documentation and material declarations for the MSP430F24x1 family.
MSP430F2491TRGCR 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:
MSP430F2491TRGCR FAQ
1.How can I place an order for MSP430F2491TRGCR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2491TRGCR 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 MSP430F2491TRGCR reliable?
The price and inventory of MSP430F2491TRGCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2491TRGCR is usually 5 days.
3.What payment methods are accepted for MSP430F2491TRGCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2491TRGCR transactions.
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4.How is shipping managed for MSP430F2491TRGCR?
MSP430F2491TRGCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2491TRGCR 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 MSP430F2491TRGCR?
For technical support, including MSP430F2491TRGCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2491TRGCR requirements.
6.How does Aetrix verify that MSP430F2491TRGCR is sourced from the original manufacturer or authorized distributors?
All MSP430F2491TRGCR 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 MSP430F2491TRGCR meets industry standards.
7.What is the process for return or replacement of MSP430F2491TRGCR?
All MSP430F2491TRGCR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2491TRGCR, 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 MSP430F2491TRGCR part is unused and in its original packaging.
Return procedure for MSP430F2491TRGCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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