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Texas Instruments MSP430FR5949IRHAR
- Part No.:
- MSP430FR5949IRHAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5949IRHAR.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430FR5949IRHAR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 64KB nonvolatile memory, 2KB RAM, 12-bit ADC (14 external + 2 internal channels), RTC clocked by 32-kHz crystal, and dual eUSCI modules supporting UART/I²C/SPI. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes requiring long-term data retention without flash wear-out.
For engineers reviewing the MSP430FR5949IRHAR datasheet, MSP430FR5949IRHAR pinout, MSP430FR5949IRHAR application, or MSP430FR5949IRHAR equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 current (0.25 µA typical), RTC calendar/alarm support, capacitive touch I/O capability, and 40-pin VQFN (RHA) package compatibility with energy-harvesting and wearable designs.
Technical Context
The MSP430FR5949IRHAR implements the ULP CPUXV2 core with 16 registers and integrates a flexible clock system featuring DCO, VLO, and LFXT (32-kHz crystal oscillator only - no HFXT). Its real-time clock (RTC_B) operates in LPM3.5 domain and requires external 32-kHz crystal connected to PJ.4/LFXIN and PJ.5/LFXOUT.
Peripherals include five 16-bit timers (TA0–TA3, TB0), 3-channel DMA, 16-channel analog comparator, AES256 encryption coprocessor, and eUSCI_A0/eUSCI_B0 for UART/I²C/SPI communication. All I/O pins support capacitive touch sensing without external components and edge-selectable wake-up from low-power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz operation - enables deterministic timing for real-time sensor control loops. |
| FRAM Capacity | 64 KB unified nonvolatile memory - eliminates flash erase cycles; supports simultaneous read/write and 10¹⁵ write endurance. |
| ADC Resolution | 12-bit SAR ADC with 14 external + 2 internal input channels - provides high-precision analog sensing for metering and environmental monitoring. |
| Low-Power Mode LPM3.5 | 0.25 µA typical current with RTC active - enables years of operation on coin-cell batteries in data-logging applications. |
| RTC Support | Calendar and alarm functions with 32-kHz crystal clock source (PJ.4/PJ.5) - delivers accurate timekeeping without host processor intervention. |
| eUSCI Peripherals | eUSCI_A0 (UART/IrDA/SPI) and eUSCI_B0 (I²C/SPI) - enables robust serial communication with sensors, displays, and wireless transceivers. |
| Supply Voltage Range | 1.8 V to 3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, and energy-harvesting power sources. |
Pinout & Package
VQFN-40 (RHA) package, 6 mm × 6 mm body size, exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PJ.4/LFXIN | Low-frequency crystal input | Connects to 32-kHz crystal for RTC_B operation; required for calendar mode and LPM3.5 current spec. |
| PJ.5/LFXOUT | Low-frequency crystal output | Completes crystal oscillator circuit; must be used with PJ.4 for RTC functionality. |
| P1.0/RTCCLK | RTC clock calibration output | Provides calibrated clock signal for external synchronization or calibration reference. |
| P2.0/UCA0TXD | UART transmit (eUSCI_A0) | Primary serial interface pin for bootloader, debug, or sensor telemetry via UART. |
| P1.6/UCB0SDA | I²C data line (eUSCI_B0) | Enables communication with I²C sensors (e.g., temperature, humidity) without additional level-shifting. |
| RST/NMI/SBWTDIO | Reset / NMI / JTAG debug I/O | Single-pin multifunction interface for reset assertion, non-maskable interrupt, and Spy-Bi-Wire programming/debug. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64 KB unified memory space enabling instant write, zero-wear endurance, and simultaneous code/data execution - critical for firmware updates and cyclic logging in field-deployed devices. |
| Capacitive Touch I/O | All GPIO pins support CTSI-based touch sensing without external RC networks - reduces BOM cost and PCB area in wearable and human-interface applications. |
| Hardware AES256 Engine | Dedicated encryption/decryption coprocessor with 128/256-bit keys - accelerates secure firmware updates and encrypted sensor data transmission without CPU overhead. |
| Ultra-Low-Power RTC | Real-time clock with calendar, alarm, and LPM3.5 operation at 0.25 µA - sustains timekeeping during multi-year battery life in remote monitoring systems. |
| 3-Channel DMA Controller | Enables autonomous peripheral-to-memory transfers (e.g., ADC → FRAM) without CPU wake-up - extends sleep duration and lowers average system current. |
Applications
| Smart Metering | Energy-Harvesting Sensor Node |
|---|---|
Use Scenario: Electricity/water/gas meter with tamper detection, pulse counting, and hourly consumption logging. IC Role / Device Role / Timing Role: Primary controller managing metrology ADC, RTC-driven logging intervals, and secure RF communication stack. Use Value: FRAM enables reliable 10+ year logging without wear-out; LPM3.5 RTC ensures accurate billing intervals on primary battery. | Use Scenario: Wireless environmental sensor (temperature/humidity/pressure) powered by solar cell or thermoelectric generator. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting PMIC interface, sensor acquisition, and duty-cycled BLE/Wi-SUN transmission. Use Value: 0.25 µA LPM3.5 current minimizes quiescent drain; FRAM retains calibration data across intermittent power loss. |
| Wearable Health Monitor | Data Logger for Industrial Equipment |
Use Scenario: ECG/PPG patch collecting biometric data continuously over 7-day wear cycle. IC Role / Device Role / Timing Role: Signal acquisition controller with analog front-end, motion-triggered wake-up, and timestamped FRAM storage. Use Value: Capacitive touch I/O enables buttonless UI; 12-bit ADC resolves microvolt-level biosignals with internal reference stability. | Use Scenario: Vibration/temperature logger mounted on motors, pumps, or HVAC units for predictive maintenance. IC Role / Device Role / Timing Role: Autonomous data collector with RTC-scheduled sampling, CRC-verified FRAM storage, and USB/UART retrieval interface. Use Value: 10¹⁵ FRAM write cycles support >100 years of 1-second sampling; AES256 secures firmware updates against unauthorized reprogramming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power FRAM microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5948IRHAR | 48 KB FRAM, same 40-pin RHA package, identical peripherals and low-power specs - differs only in memory size. | Suitable where firmware footprint and data logging depth are reduced; no change to PCB or software architecture required. | Select when application code + retained data fits within 48 KB and cost optimization is prioritized. |
| MSP430FR5947IRHAR | 32 KB FRAM, 1 KB RAM, same package and peripheral set - lower memory and RAM capacity than MSP430FR5949IRHAR. | Targeted at simpler sensor endpoints with minimal local processing or buffering needs. | Choose for cost-sensitive, low-complexity nodes where full 64 KB FRAM is unnecessary. |
Compared with MSP430FR5948IRHAR and MSP430FR5947IRHAR, the MSP430FR5949IRHAR provides maximum FRAM capacity in the 40-pin RHA family, enabling larger firmware images, deeper data buffers, and extended secure key storage - making it optimal for feature-rich, field-upgradable IoT endpoints.
Availability
MSP430FR5949IRHAR is available at Aetrix Electronics and suitable for smart metering, energy-harvesting sensor nodes, and wearable electronics requiring stable component supply and long-term production continuity.
Supply support for MSP430FR5949IRHAR 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 company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The MSP430FR59xx product line is designed for ultra-low-power sensing and measurement applications, combining FRAM nonvolatility with sub-µA real-time operation to enable decade-long battery life in constrained environments.
FAQ
What is the maximum operating frequency of the MSP430FR5949IRHAR?
The MSP430FR5949IRHAR supports a maximum system clock frequency of 16 MHz using its factory-trimmed DCO or external HFXT (though HFXT is not available on this variant). Its CPUXV2 core executes instructions at one cycle per instruction at this rate, enabling responsive real-time control while maintaining ultra-low power consumption in active mode (≈100 µA/MHz).
Does the MSP430FR5949IRHAR support hardware encryption?
Yes, the MSP430FR5949IRHAR integrates a dedicated AES256 security coprocessor supporting both 128-bit and 256-bit key lengths. This hardware engine performs encryption and decryption independently of the CPU, enabling secure firmware updates, authenticated sensor data transmission, and protected key storage without compromising real-time performance or increasing active-mode current.
What crystal oscillator options are supported by the MSP430FR5949IRHAR?
The MSP430FR5949IRHAR supports only the low-frequency crystal oscillator (LFXT) for 32-kHz operation - connected to PJ.4/LFXIN and PJ.5/LFXOUT. It does not include the high-frequency crystal oscillator (HFXT) circuitry, distinguishing it from MSP430FR596x and MSP430FR595x variants. This design prioritizes RTC accuracy and ultra-low-power standby over high-speed system clocks.
How many analog input channels does the ADC12_B module support on the MSP430FR5949IRHAR?
The ADC12_B module on the MSP430FR5949IRHAR supports 14 external analog input channels (A0–A13) plus 2 internal channels (e.g., temperature sensor, VREF), for a total of 16 selectable inputs. Channel mapping is fixed per pin assignment (e.g., P3.0 = A12), and all inputs share the same 12-bit SAR architecture with programmable sample-and-hold and internal voltage reference.
Is the MSP430FR5949IRHAR pin-compatible with other devices in the MSP430FR594x family?
Yes, the MSP430FR5949IRHAR is pin-compatible with MSP430FR5948IRHAR and MSP430FR5947IRHAR in the 40-pin VQFN (RHA) package. All share identical pinouts, electrical characteristics, and peripheral mappings - differing only in FRAM/RAM capacity and associated part-number coding. This allows direct substitution in existing designs when memory requirements change.
MSP430FR5949IRHAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 40-VFQFN Exposed Pad
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 33
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 14x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5949IRHAR FAQ
1.How can I place an order for MSP430FR5949IRHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5949IRHAR 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 MSP430FR5949IRHAR reliable?
The price and inventory of MSP430FR5949IRHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5949IRHAR is usually 5 days.
3.What payment methods are accepted for MSP430FR5949IRHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5949IRHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5949IRHAR?
MSP430FR5949IRHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5949IRHAR 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 MSP430FR5949IRHAR?
For technical support, including MSP430FR5949IRHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5949IRHAR requirements.
6.How does Aetrix verify that MSP430FR5949IRHAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5949IRHAR 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 MSP430FR5949IRHAR meets industry standards.
7.What is the process for return or replacement of MSP430FR5949IRHAR?
All MSP430FR5949IRHAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5949IRHAR, 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 MSP430FR5949IRHAR part is unused and in its original packaging.
Return procedure for MSP430FR5949IRHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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