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Texas Instruments MSP430FR5948IDAR
- Part No.:
- MSP430FR5948IDAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5948IDAR.pdf
- Description:
- IC MCU 16BIT 48KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,883
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Product details
Overview
MSP430FR5948IDAR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 48KB nonvolatile memory, 2KB RAM, and integrated RTC clocked by 32-kHz crystal. It features 12-bit ADC (14 external channels), 16-channel analog comparator, AES-256 encryption, and eUSCI peripherals supporting UART, SPI, and I²C - deployed in battery-powered sensor nodes and energy-harvesting data loggers.
For engineers reviewing the MSP430FR5948IDAR datasheet, MSP430FR5948IDAR pinout, MSP430FR5948IDAR application, or MSP430FR5948IDAR equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 current (0.25 µA typical), RTC calendar/alarm support, LFXT-only clock architecture, and TSSOP-38 package compatibility with capacitive touch I/O on all pins.
Technical Context
The MSP430FR5948IDAR implements the ULP CPUXV2 core with seven low-power modes, including LPM3.5 (RTC active) and LPM4.5 (shutdown at 0.02 µA). Its FRAM memory replaces flash and EEPROM, enabling fast 125 ns word writes and eliminating erase cycles.
It integrates dual eUSCI modules: eUSCI_A0 supports UART with auto-baud detection and IrDA; eUSCI_B0 supports I²C with multiple slave addressing and SPI. The device lacks HFXT oscillator - only LFXT (32 kHz crystal on PJ.4/PJ.5) is supported, limiting maximum system clock to DCO-derived frequencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz operation - enables deterministic real-time control without cache or wait states |
| FRAM Size | 48 KB unified nonvolatile memory - stores code, data, and logs in same space with 10¹⁵ write endurance |
| RAM Size | 2 KB SRAM - sufficient for stack, buffers, and real-time variables during active/LPM0–LPM2 operation |
| ADC Resolution | 12-bit SAR ADC with 14 external input channels - supports precision sensor interfacing with internal reference |
| RTC Support | Real-Time Clock with calendar and alarm functions - requires external 32-kHz crystal on PJ.4/PJ.5, draws 0.25 µA in LPM3.5 |
| Low-Power Modes | LPM3.5 (0.25 µA typ), LPM4.5 (0.02 µA typ) - enables multi-year battery life in intermittent-sensing applications |
| Crypto Engine | AES-256 hardware accelerator - offloads encryption/decryption for secure firmware updates and sensor data protection |
Pinout & Package
TSSOP-38 package (12.5 mm × 6.2 mm), thermally enhanced with exposed pad (not electrically connected); pin 1 marked by dot; recommended solder profile per JEDEC J-STD-020.
| 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, comparator C0, negative reference source/sink - critical for timekeeping accuracy and analog front-end design |
| PJ.4/LFXIN | Crystal Input | Connects to 32-kHz tuning-fork crystal - mandatory for RTC operation and LPM3.5 mode entry |
| PJ.5/LFXOUT | Crystal Output | Completes LFXT oscillator loop - must be routed with matched trace length and minimal capacitance |
| RST/NMI/SBWTDIO | Reset & Debug I/O | Active-low reset, non-maskable interrupt, and bidirectional Spy-Bi-Wire debug interface - single-pin programming and debugging |
| DVCC / DVSS / AVCC / AVSS | Power Supplies | Digital (DVCC/DVSS) and analog (AVCC/AVSS) rails require separate filtering - essential for ADC noise performance and FRAM write stability |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 48 KB unified memory with 125 ns write speed and 10¹⁵ endurance - eliminates flash wear-out and enables true data logging at sensor sampling rates |
| Capacitive Touch I/O | All GPIO pins support CTSI-based touch sensing without external components - reduces BOM cost and PCB area in wearable interfaces |
| Hardware CRC16 | Dedicated peripheral computes checksums over memory or DMA transfers - ensures data integrity in FRAM-stored logs and OTA updates |
| 3-Channel DMA | Enables autonomous ADC-to-FRAM transfers and UART buffering - frees CPU during burst acquisition or communication |
| Ultra-Low-Power RTC | 0.25 µA typical current in LPM3.5 with calendar and alarm - allows precise wake-up scheduling for duty-cycled sensor reads |
Applications
| Smart Utility Metering | Energy-Harvesting Sensor Node |
|---|---|
Use Scenario: Gas/water meter with pulse counting, temperature compensation, and tamper detection. IC Role / Device Role / Timing Role: Primary controller managing metrology ADC, RTC-based billing intervals, and secure LoRaWAN transmission. Use Value: FRAM retains 10+ years of hourly consumption logs without degradation; LPM4.5 extends battery life beyond 15 years. | Use Scenario: Solar-powered environmental monitor measuring temperature, humidity, and light intensity every 5 minutes. IC Role / Device Role / Timing Role: System-on-chip handling sensor acquisition, timestamped storage, and scheduled RF wake-up via RTC alarm. Use Value: 0.25 µA LPM3.5 current enables operation on <10 µAh harvested energy per cycle; capacitive touch simplifies field calibration UI. |
| Wearable Health Monitor | Industrial Data Logger |
Use Scenario: Chest-strap ECG patch with motion artifact rejection and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Front-end signal conditioner (ADC + comparator), real-time heart-rate calculation engine, and secure BLE packet assembler. Use Value: AES-256 encrypts biometric data before transmission; FRAM enables lossless waveform capture during high-speed sampling bursts. | Use Scenario: DIN-rail mounted logger recording vibration, temperature, and voltage in factory equipment. IC Role / Device Role / Timing Role: Standalone data acquisition unit with timestamped FRAM storage, watchdog supervision, and RS-485 communication. Use Value: 10¹⁵ FRAM write cycles support continuous 1 kHz sampling for >30 years; CRC16 validates integrity of stored datasets. |
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 |
|---|---|---|---|
| MSP430FR5947IDAR | 32 KB FRAM, 1 KB RAM, identical pinout and peripheral set - lower memory capacity only | Suitable for simpler sensor nodes with reduced logging depth or smaller firmware footprint | Select when application requires ≤32 KB code+data storage and cost optimization is prioritized over future scalability |
| MSP430FR5949IPW | 64 KB FRAM, 2 KB RAM, TSSOP-38 package - same footprint but higher memory density | Required for complex firmware with OTA update partitioning or extended data history retention | Choose when long-term field upgradeability or >48 KB FRAM usage (e.g., encrypted firmware staging) is mandatory |
Compared with MSP430FR5947IDAR, the MSP430FR5948IDAR offers 16 KB more FRAM for firmware headroom and data buffering; versus MSP430FR5949IPW, it trades 16 KB FRAM for tighter cost control while retaining identical I/O, power, and timing behavior in TSSOP-38.
Availability
MSP430FR5948IDAR is available at Aetrix Electronics and suitable for smart metering, energy-harvesting sensor nodes, and wearable electronics requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR5948IDAR 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 for industrial, automotive, and consumer markets.
The MSP430FR59xx family targets ultra-low-power sensing and measurement applications, combining FRAM persistence with sub-µA sleep modes to extend battery life in remote and maintenance-free deployments.
FAQ
What is the maximum operating frequency of the MSP430FR5948IDAR?
The MSP430FR5948IDAR supports up to 16 MHz system clock via its digitally controlled oscillator (DCO), factory-trimmed across 10 selectable frequencies. This enables deterministic real-time execution without external high-frequency crystals, as the device lacks HFXT support - all timing derives from DCO or the 32-kHz LFXT used for RTC.
Does the MSP430FR5948IDAR support hardware encryption?
Yes, the MSP430FR5948IDAR includes a dedicated 128-bit or 256-bit AES security coprocessor. This hardware engine accelerates encryption and decryption operations independently of the CPU, enabling secure firmware updates, protected sensor data storage in FRAM, and authenticated communication - all while maintaining ultra-low-power operation.
Can the MSP430FR5948IDAR operate without an external crystal?
Yes, the MSP430FR5948IDAR can operate using only its internal DCO and VLO clocks for active and most low-power modes. However, the RTC module requires the external 32-kHz crystal on PJ.4/PJ.5 to function - omitting it disables calendar/alarm features and prevents entry into LPM3.5 mode.
What are the analog input capabilities of the MSP430FR5948IDAR?
The MSP430FR5948IDAR integrates a 12-bit ADC12_B module with up to 14 external input channels (A0–A15, excluding A6/A7 reserved for eUSCI), internal reference, and sample-and-hold. It also includes a 16-channel analog comparator (Comp_E) with programmable hysteresis and rail-to-rail inputs - supporting simultaneous threshold monitoring and precision sensor digitization.
Is the MSP430FR5948IDAR pin-compatible with other devices in the FR594x family?
Yes, the MSP430FR5948IDAR in TSSOP-38 (DA package) shares identical pinout and signal mapping with MSP430FR5947IDAR and MSP430FR5949IDAR. This allows direct substitution within the same package variant, provided firmware accommodates differences in FRAM size (32 KB vs. 48 KB vs. 64 KB) and associated memory layout constraints.
MSP430FR5948IDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- 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:
- 31
- 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 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5948IDAR FAQ
1.How can I place an order for MSP430FR5948IDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5948IDAR 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 MSP430FR5948IDAR reliable?
The price and inventory of MSP430FR5948IDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5948IDAR is usually 5 days.
3.What payment methods are accepted for MSP430FR5948IDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5948IDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5948IDAR?
MSP430FR5948IDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5948IDAR 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 MSP430FR5948IDAR?
For technical support, including MSP430FR5948IDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5948IDAR requirements.
6.How does Aetrix verify that MSP430FR5948IDAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5948IDAR 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 MSP430FR5948IDAR meets industry standards.
7.What is the process for return or replacement of MSP430FR5948IDAR?
All MSP430FR5948IDAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5948IDAR, 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 MSP430FR5948IDAR part is unused and in its original packaging.
Return procedure for MSP430FR5948IDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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