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Texas Instruments MSP430FR5948IRHAR
- Part No.:
- MSP430FR5948IRHAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5948IRHAR.pdf
- Description:
- IC MCU 16BIT 48KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
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Product details
Overview
MSP430FR5948IRHAR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 48KB nonvolatile memory, 2KB RAM, and integrated RTC clocked by LFXT (32-kHz crystal). It features 12-bit ADC with 14 external channels, dual eUSCI modules (UART/I²C/SPI), AES-256 encryption, and operates from 1.8 V to 3.6 V - optimized for battery-powered sensor nodes and data loggers.
For engineers reviewing the MSP430FR5948IRHAR datasheet, MSP430FR5948IRHAR pinout, MSP430FR5948IRHAR application, or MSP430FR5948IRHAR equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 current (0.25 µA typical), RTC calendar support, UART/I²C bootloader capability, and RHA package compatibility with 40-pin QFN footprint.
Technical Context
The MSP430FR5948IRHAR implements the CPUXV2 16-bit RISC core with hardware multiplier and three-channel DMA, enabling efficient signal processing in energy-constrained environments. Its clock system integrates DCO, VLO, and LFXT (LFXIN/LFXOUT pins present), but excludes HFXT - confirmed by device family documentation restricting HFXT to MSP430FR5x5x variants.
Peripherals include two eUSCI_A modules (UART/IrDA/SPI) and one eUSCI_B (I²C/SPI), with BSL supporting UART or I²C depending on variant. The RTC_B module requires LFXT operation and is enabled in MSP430FR5x4x devices like this part, providing calendar and alarm functions in LPM3.5 mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CPUXV2 16-bit RISC with 32-bit hardware multiplier - enables fast math operations without software overhead |
| FRAM Capacity | 48 KB unified nonvolatile memory - eliminates write latency and wear leveling; supports simultaneous read/write |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, coin cell, or energy-harvesting sources |
| LPM3.5 Current | 0.25 µA typical - enables years of operation on small batteries when RTC is active |
| ADC Resolution | 12-bit SAR with internal reference - delivers ±1 LSB INL for precision sensor interfacing |
| RTC Support | Calendar mode with alarm - maintains real-time tracking during ultra-low-power sleep without external components |
| eUSCI Peripherals | eUSCI_A0/A1 (UART/IrDA/SPI), eUSCI_B0 (I²C/SPI) - provides dual serial interfaces for sensor fusion and host communication |
Pinout & Package
VQFN-40 (RHA) package: 6 mm × 6 mm body, 0.5 mm pitch, exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.1/DMAE0/RTCCLK/A0/C0/VREF-/VeREF- | Multi-function I/O | RTC calibration output, ADC channel A0 input, comparator C0, and negative reference source - enables self-calibrating sensor systems |
| PJ.4/LFXIN & PJ.5/LFXOUT | Crystal oscillator terminals | Supports 32.768-kHz crystal for RTC timing - required for LPM3.5 operation and calendar accuracy |
| P2.0/UCA0TXD & P2.1/UCA0RXD | UART interface | Primary UART pins for bootloader (BSL) and host communication - no external level-shifting needed at 3.3 V |
| P1.6/UCB0SDA & P1.7/UCB0SCL | I²C interface | Secondary serial interface for sensor networks - supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C |
| RST/NMI/SBWTDIO | Reset/debug port | Combined reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O - enables in-system programming with minimal pins |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 48 KB unified memory with 125 ns write time and 10¹⁵ endurance - eliminates flash erase cycles and enables logging at microsecond intervals |
| Ultra-Low-Power Modes | LPM3.5 (0.25 µA) and LPM4.5 (0.02 µA) - extends battery life in always-on sensing applications without sacrificing RTC functionality |
| Capacitive Touch I/O | All GPIO pins support touch sensing without external RC networks - reduces BOM cost and PCB area for user interface integration |
| AES-256 Encryption | Hardware-accelerated security coprocessor - secures firmware updates and sensor data without CPU load or timing jitter |
| Integrated Analog Peripherals | 12-bit ADC (14 ext. ch.), 16-channel comparator, and programmable voltage reference - enables autonomous analog signal conditioning |
Applications
| Smart Utility Metering | Energy-Harvesting Sensor Node |
|---|---|
Use Scenario: Gas/water meter with pulse counting, temperature compensation, and wireless reporting. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based event logs, and maintaining accurate time via RTC_B. Use Value: 48KB FRAM stores decades of timestamped consumption data; 0.25 µA LPM3.5 enables >10-year battery life with periodic RF wake-up. | Use Scenario: Wireless environmental monitor powered by solar cell or thermoelectric generator. IC Role / Device Role / Timing Role: System-on-chip managing sensor sampling, data compression, and low-duty-cycle transmission. Use Value: Unified FRAM simplifies firmware design for intermittent power; capacitive touch I/O enables maintenance-free buttonless UI. |
| Wearable Health Monitor | Industrial Data Logger |
Use Scenario: ECG/PPG patch collecting biometric data and transmitting alerts via BLE gateway. IC Role / Device Role / Timing Role: Front-end signal processor with ADC oversampling, real-time filtering, and secure data storage. Use Value: AES-256 encrypts patient data before storage; 12-bit ADC resolution meets clinical-grade signal fidelity requirements. | Use Scenario: Ruggedized logger for vibration, temperature, and humidity in factory equipment. IC Role / Device Role / Timing Role: Autonomous data acquisition unit with timestamped FRAM storage and configurable wake triggers. Use Value: Radiation-resistant FRAM ensures data integrity in electrically noisy industrial environments; RTC calendar enables scheduled maintenance alerts. |
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 |
|---|---|---|---|
| MSP430FR5949IRHAR | 64KB FRAM, same package and peripheral set - differs only in memory size | Preferred where extended event history or larger firmware image is required | Select MSP430FR5949IRHAR if >48KB nonvolatile storage is needed; otherwise MSP430FR5948IRHAR offers optimal cost/performance balance |
| MSP430FR5947IRHAR | 32KB FRAM, 1KB RAM, same LFXT-only clock system and peripherals | Suitable for simpler sensor endpoints with reduced code/data footprint | Choose MSP430FR5947IRHAR for minimal-cost deployments where 32KB FRAM suffices and memory headroom is not critical |
Compared with MSP430FR5949IRHAR and MSP430FR5947IRHAR, the MSP430FR5948IRHAR delivers the optimal trade-off between FRAM capacity (48KB), power efficiency (0.25 µA RTC mode), and peripheral richness - making it ideal for mid-tier IoT edge nodes requiring robust logging without over-provisioning memory.
Availability
MSP430FR5948IRHAR is available at Aetrix Electronics and suitable for smart metering, wearable electronics, and industrial data logging requiring stable component supply and long-term lifecycle support.
Supply support for MSP430FR5948IRHAR 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 and embedded processing solutions across industrial, automotive, and personal electronics markets.
The MSP430 ULP FRAM portfolio targets energy-constrained applications - combining ferroelectric memory, ultra-low-power architecture, and integrated analog peripherals to extend battery life while simplifying firmware design.
FAQ
What is the maximum operating frequency of the MSP430FR5948IRHAR?
The MSP430FR5948IRHAR supports up to 16 MHz system clock via its factory-trimmed DCO, with optional LFXT (32.768 kHz) for RTC and low-frequency timing. High-frequency crystal oscillator (HFXT) is not supported - this device belongs to the MSP430FR5x4x series, which omits HFXT in favor of ultra-low-power optimization. All timing-critical operations remain fully functional within the 16-MHz DCO range.
Does the MSP430FR5948IRHAR support hardware AES encryption?
Yes, the MSP430FR5948IRHAR includes a dedicated 128-bit or 256-bit AES security coprocessor that performs encryption and decryption independently of the CPU. This allows secure firmware updates, encrypted sensor data storage in FRAM, and authenticated communication without compromising real-time performance - a key differentiator for certified IoT endpoints requiring FIPS-compliant cryptography.
Can the MSP430FR5948IRHAR operate from a single 1.8-V supply?
Yes, the MSP430FR5948IRHAR is fully specified to operate from 1.8 V to 3.6 V, with all peripherals functional across this range. At 1.8 V, active-mode current is approximately 100 µA/MHz, and LPM3.5 (RTC active) draws 0.25 µA typical. The SVS (supply voltage supervisor) thresholds are configured to maintain reliable operation down to the minimum supply, making it suitable for direct connection to single-cell lithium or energy-harvesting sources.
What crystal oscillator options are supported by the MSP430FR5948IRHAR?
The MSP430FR5948IRHAR supports only the low-frequency crystal oscillator (LFXT) via PJ.4/LFXIN and PJ.5/LFXOUT pins - rated for 32.768-kHz crystals. It does not include HFXT circuitry, as confirmed by TI's device comparison table and functional block diagram. This configuration prioritizes ultra-low-power RTC operation and eliminates HFXT-related leakage, aligning with its target use in battery-operated timekeeping applications.
Is the MSP430FR5948IRHAR pin-compatible with other devices in the MSP430FR59xx family?
The MSP430FR5948IRHAR uses the 40-pin RHA (VQFN) package and shares identical pinout with MSP430FR5947IRHAR, MSP430FR5949IRHAR, and MSP430FR59471IRHAR - all members of the MSP430FR5x4x LFXT-only subfamily. However, it is not pin-compatible with HFXT-equipped MSP430FR5x5x devices (e.g., MSP430FR5958) or 48-pin RGZ variants due to differing pin allocations for HFXIN/HFXOUT and additional I/O.
MSP430FR5948IRHAR 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:
- 48KB (48K 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:
MSP430FR5948IRHAR FAQ
1.How can I place an order for MSP430FR5948IRHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5948IRHAR 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 MSP430FR5948IRHAR reliable?
The price and inventory of MSP430FR5948IRHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5948IRHAR is usually 5 days.
3.What payment methods are accepted for MSP430FR5948IRHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5948IRHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5948IRHAR?
MSP430FR5948IRHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5948IRHAR 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 MSP430FR5948IRHAR?
For technical support, including MSP430FR5948IRHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5948IRHAR requirements.
6.How does Aetrix verify that MSP430FR5948IRHAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5948IRHAR 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 MSP430FR5948IRHAR meets industry standards.
7.What is the process for return or replacement of MSP430FR5948IRHAR?
All MSP430FR5948IRHAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5948IRHAR, 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 MSP430FR5948IRHAR part is unused and in its original packaging.
Return procedure for MSP430FR5948IRHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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