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Texas Instruments MSP430FR5949IDAR
- Part No.:
- MSP430FR5949IDAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5949IDAR.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,322
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Product details
Overview
MSP430FR5949IDAR 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 LFXT, and UART/I²C/SPI via eUSCI peripherals - deployed in battery-powered metering and energy-harvested sensor nodes.
For engineers reviewing the MSP430FR5949IDAR datasheet, MSP430FR5949IDAR pinout, MSP430FR5949IDAR application, or MSP430FR5949IDAR 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 TSSOP-38 package compatibility with legacy MSP430 footprint constraints.
Technical Context
The MSP430FR5949IDAR implements the CPUXV2 core with 16 registers and integrates a 32-bit hardware multiplier, 3-channel DMA, and CRC16 engine. Its clock system includes DCO (10 factory-trimmed frequencies), VLO, and LFXT oscillator - but excludes HFXT, confirming absence of HFXIN/HFXOUT pins per device family specification.
Analog subsystem comprises a 16-channel comparator, 12-bit ADC with internal reference and sample-and-hold, and programmable VREF± outputs. All I/O pins support capacitive touch sensing without external components, and the RTC_B module operates only when LFXT is active - consistent with MSP430FR594x series functional limitations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz operation - enables deterministic real-time control with low code footprint |
| FRAM Size | 64 KB unified nonvolatile memory - eliminates write latency and wear leveling overhead vs flash |
| RAM Size | 2 KB SRAM - sufficient for stack, buffers, and real-time variables in ultra-low-power sleep/wake cycles |
| ADC Resolution | 12-bit SAR with 14 external + 2 internal analog inputs - supports precision sensor interfacing in metering |
| LPM3.5 Current | 0.25 µA typical with RTC running - enables multi-year battery life in always-on timekeeping applications |
| RTC Source | LFXT crystal oscillator only (32 kHz) - requires external 3.7-pF crystal; no HFXT or internal VLO RTC support |
| Package Type | TSSOP-38 (12.5 mm × 6.2 mm) - surface-mount compatible with automated assembly and space-constrained PCBs |
Pinout & Package
TSSOP-38 package with 38-pin leaded surface-mount footprint; body size 12.5 mm × 6.2 mm; exposed pad not present; RoHS-compliant.
| 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, negative reference source/sink - critical for timekeeping accuracy and analog front-end design |
| P1.1/TA0.2/TA1CLK/COUT/A1/C1/VREF+/VeREF+ | Multi-function I/O | RTC clock input path, ADC channel A1, comparator output, positive reference source/sink - enables dual-reference ADC configurations |
| P3.0–P3.3/A12–A15/C12–C15 | Analog I/O | Four dedicated ADC input channels with comparator pairing - supports multi-sensor acquisition in compact designs |
| P1.3/TA1.2/UCB0STE/A3/C3 | SPI Slave Enable | eUSCI_B0 SPI slave transmit enable - required for daisy-chained sensor interfaces with synchronous data transfer |
| P1.4/TB0.1/UCA0STE/A4/C4 | SPI Slave Enable | eUSCI_A0 SPI slave transmit enable - allows concurrent SPI peripheral control alongside UART/I²C communication |
| PJ.4/LFXIN & PJ.5/LFXOUT | Crystal Interface | Dedicated 32-kHz crystal connections for RTC_B - must be used with 3.7-pF load capacitance crystal per spec |
| RST/NMI/SBWTDIO | Reset & Debug | Unified reset/NMI input and Spy-Bi-Wire debug I/O - enables single-wire programming and low-pin-count debugging |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64KB unified memory with 125 ns write speed and 10¹⁵ endurance - enables logging without wear-out or erase delays |
| Capacitive Touch I/O | All GPIO pins support touch sensing without external RC networks - reduces BOM cost and PCB area in wearable interfaces |
| Real-Time Clock (RTC_B) | Calendar mode with alarm and calibration registers - provides timestamping and wake-up scheduling in LPM3.5 at 0.25 µA |
| Hardware AES-256 | Dedicated encryption coprocessor - accelerates secure firmware updates and sensor data confidentiality in edge nodes |
| eUSCI Serial Peripherals | eUSCI_A0 (UART/IrDA/SPI) and eUSCI_B0 (I²C/SPI) - supports dual-protocol sensor hub connectivity with automatic baud-rate detection |
Applications
| Smart Utility Metering | Energy-Harvested Sensor Node |
|---|---|
Use Scenario: Gas/water/electricity meter with tamper detection, pulse counting, and hourly consumption logging. IC Role / Device Role / Timing Role: Primary controller executing metrology algorithms, managing FRAM-based data storage, and maintaining accurate time via RTC_B. Use Value: 64KB FRAM enables decade-long interval logging without flash wear degradation; 0.25 µA LPM3.5 extends battery life beyond 10 years. | Use Scenario: Wireless environmental sensor (temp/humidity/pressure) powered by solar cell or thermoelectric generator. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting PMIC interface, sensor ADC reads, and scheduled BLE transmission bursts. Use Value: Unified FRAM simplifies power-fail-safe data buffering; capacitive touch I/O enables self-test buttonless UI; ultra-low standby current matches intermittent energy availability. |
| Wearable Health Monitor | Data Logger for Industrial Assets |
Use Scenario: Compact wrist-worn device measuring heart rate, motion, and skin temperature with Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Central MCU handling analog sensor fusion, motion-triggered wake-up, and encrypted data packet generation. Use Value: All-GPIO capacitive touch eliminates mechanical buttons; AES-256 secures PII before transmission; 2KB RAM accommodates real-time signal processing buffers. | Use Scenario: Ruggedized vibration/temperature logger mounted on motors, pumps, or HVAC systems for predictive maintenance. IC Role / Device Role / Timing Role: Autonomous data acquisition unit sampling sensors at fixed intervals and storing timestamps in FRAM until retrieval. Use Value: RTC_B calendar mode ensures traceable event sequencing; radiation-resistant FRAM prevents data corruption in EMI-heavy industrial environments. |
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 |
|---|---|---|---|
| MSP430FR5948IDAR | 48KB FRAM, same 2KB RAM, identical TSSOP-38 package and peripheral set - differs only in memory size | Lower memory requirement applications (e.g., simple sensor polling without extended history) | Select when FRAM budget < 64KB suffices and cost optimization is prioritized |
| MSP430FR5947IDAR | 32KB FRAM, 1KB RAM, same TSSOP-38 package - reduced memory and RAM capacity | Cost-sensitive, minimal-feature deployments (e.g., basic timer-based switch controllers) | Choose for lowest bill-of-materials where 32KB FRAM and 1KB RAM meet functional needs |
Compared with MSP430FR5948IDAR and MSP430FR5947IDAR, the MSP430FR5949IDAR delivers maximum FRAM capacity and full RAM allocation within the same TSSOP-38 footprint - making it optimal for applications requiring long-duration data retention, complex firmware, or future feature scalability without PCB redesign.
Availability
MSP430FR5949IDAR is available at Aetrix Electronics and suitable for smart utility metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR5949IDAR 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 product line targets ultra-low-power sensing and measurement applications, integrating FRAM memory and intelligent peripherals to extend battery life while enabling robust data integrity in resource-constrained edge devices.
FAQ
What is the maximum operating frequency of the MSP430FR5949IDAR?
The MSP430FR5949IDAR supports a maximum system clock frequency of 16 MHz using its digitally controlled oscillator (DCO) with 10 factory-trimmed frequencies. This enables high-speed instruction execution while maintaining ultra-low-power operation - critical for real-time sensor processing and communication tasks in the MSP430FR5949IDAR architecture.
Does the MSP430FR5949IDAR support hardware encryption?
Yes, the MSP430FR5949IDAR includes a dedicated 128-bit or 256-bit AES security coprocessor. This hardware accelerator offloads encryption/decryption operations from the CPU, enabling secure firmware updates, authenticated sensor data transmission, and cryptographic key management - all while preserving the ultra-low-power profile essential to the MSP430FR5949IDAR's target applications.
Can the MSP430FR5949IDAR operate without an external crystal?
The MSP430FR5949IDAR can operate using its internal DCO or VLO for general-purpose timing, but its RTC_B module requires the external 32-kHz LFXT crystal connected to PJ.4/LFXIN and PJ.5/LFXOUT. Without this crystal, calendar-mode RTC functionality is unavailable - a constraint explicitly defined for the MSP430FR5949IDAR within the MSP430FR594x family specifications.
How many analog input channels does the MSP430FR5949IDAR ADC support?
The MSP430FR5949IDAR features a 12-bit ADC12_B module supporting 14 external analog input channels (A0–A15, excluding A6 and A7) plus 2 internal channels (temperature sensor and VCC/2 reference). This configuration is confirmed in the device comparison table and signal descriptions - distinguishing it from higher-pin-count variants that support 16 external inputs.
What debug interface does the MSP430FR5949IDAR use?
The MSP430FR5949IDAR uses the two-wire Spy-Bi-Wire (SBW) interface via RST/NMI/SBWTDIO and TEST/SBWTCK pins. This compact debug solution replaces traditional JTAG, reducing PCB routing complexity and pin count - fully supported by TI's Code Composer Studio and MSP-FET tools for programming and real-time debugging of the MSP430FR5949IDAR.
MSP430FR5949IDAR 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:
- 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 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5949IDAR FAQ
1.How can I place an order for MSP430FR5949IDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5949IDAR 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 MSP430FR5949IDAR reliable?
The price and inventory of MSP430FR5949IDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5949IDAR is usually 5 days.
3.What payment methods are accepted for MSP430FR5949IDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5949IDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5949IDAR?
MSP430FR5949IDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5949IDAR 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 MSP430FR5949IDAR?
For technical support, including MSP430FR5949IDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5949IDAR requirements.
6.How does Aetrix verify that MSP430FR5949IDAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5949IDAR 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 MSP430FR5949IDAR meets industry standards.
7.What is the process for return or replacement of MSP430FR5949IDAR?
All MSP430FR5949IDAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5949IDAR, 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 MSP430FR5949IDAR part is unused and in its original packaging.
Return procedure for MSP430FR5949IDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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