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Texas Instruments MSP430FR5949IRHAT
- Part No.:
- MSP430FR5949IRHAT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5949IRHAT.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,746
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Product details
Overview
MSP430FR5949IRHAT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 64KB nonvolatile memory, 2KB RAM, and integrated RTC clocked by 32-kHz crystal. It operates from 1.8 V to 3.6 V, delivers 100 µA/MHz active current, and supports capacitive touch I/O on all pins - ideal for battery-powered energy-harvesting sensor nodes and wearable electronics.
For engineers reviewing the MSP430FR5949IRHAT datasheet, MSP430FR5949IRHAT pinout, MSP430FR5949IRHAT application, or MSP430FR5949IRHAT equivalent, key selection criteria include LPM3.5 real-time clock current (0.25 µA), FRAM endurance (1015 write cycles), UART/I²C eUSCI peripherals, and 40-pin VQFN (RHA) package compatibility with LFXT-only timing architecture.
Technical Context
The MSP430FR5949IRHAT implements the CPUXV2 core with 16 registers and integrates a 32-bit hardware multiplier, three-channel DMA, and 16-bit CRC engine. Its clock system includes DCO with 10 factory-trimmed frequencies, VLO, and LFXT (32-kHz crystal only - no HFXT support).
Analog subsystem comprises a 12-bit ADC with up to 14 external channels and internal reference, 16-channel analog comparator, and voltage reference generator (VREF±). Security includes 128/256-bit AES coprocessor and random number seed generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz - enables deterministic real-time control with low gate count and minimal power overhead. |
| FRAM Size | 64 KB unified nonvolatile memory - eliminates flash erase delays, supports true EEPROM-like byte-write and infinite endurance in data logging. |
| RAM Size | 2 KB SRAM - sufficient for stack, buffers, and real-time variables while maintaining ultra-low standby leakage. |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, coin cell, and energy-harvesting sources without external regulation. |
| LPM3.5 Current | 0.25 µA typical with RTC running - enables years of operation on small batteries in always-on timekeeping applications. |
| ADC Resolution | 12-bit SAR with 14 external inputs - provides precision sensor interfacing for metering and environmental monitoring. |
| eUSCI Peripherals | eUSCI_A0/A1 (UART/IrDA/SPI), eUSCI_B0 (I²C/SPI) - supports dual serial interfaces for sensor fusion and host communication. |
Pinout & Package
Package: 40-pin VQFN (RHA), 6 mm × 6 mm body size, 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 - critical for timekeeping accuracy and analog sensing. |
| P1.1/TA0.2/TA1CLK/COUT/A1/C1/VREF+/VeREF+ | Multi-function I/O | Positive reference output, ADC channel A1, comparator C1, and TA1 clock input - enables ratiometric measurements and timer synchronization. |
| PJ.4/LFXIN | Crystal Input | Connects to 32-kHz tuning-fork crystal - required for RTC operation and low-power LPM3.5 mode; no HFXT support per device variant. |
| PJ.5/LFXOUT | Crystal Output | Drives 32-kHz crystal load - completes oscillator loop for precise real-time clock and calendar functions. |
| RST/NMI/SBWTDIO | Reset & Debug | Active-low reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O - enables in-system programming and fault recovery without JTAG header. |
| DVCC / DVSS / AVCC / AVSS | Power Supplies | Digital and analog supply rails with separate ground planes - mandatory separation ensures ADC noise immunity and stable digital logic operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64 KB unified memory with 125 ns write speed and 1015 endurance - enables reliable firmware updates and high-frequency data logging without wear leveling. |
| Real-Time Clock (RTC_B) | Calendar, alarm, and calibration functions powered in LPM3.5 at 0.25 µA - sustains timekeeping during multi-year battery operation. |
| Capacitive Touch I/O | All GPIO pins support touch sensing without external components - reduces BOM cost and PCB area in wearable and human-interface designs. |
| Ultra-Low-Power Modes | LPM4.5 shutdown draws 0.02 µA - extends shelf life and enables instant wake-up from deep sleep on external event. |
| AES-128/256 Coprocessor | Hardware-accelerated encryption/decryption - secures firmware updates and sensor data in edge-node deployments. |
Applications
| Metering | Energy-Harvested Sensor Nodes |
|---|---|
Use Scenario: Smart water/gas meters with pulse counting, temperature compensation, and wireless reporting. IC Role / Device Role / Timing Role: Primary controller managing metrology ADC, RTC timestamping, and sub-GHz RF interface via eUSCI. Use Value: FRAM enables tamper-proof log storage; LPM3.5 RTC maintains billing accuracy over 10+ years on primary battery. | Use Scenario: Wireless soil moisture and ambient light sensors powered by solar cells or thermoelectric generators. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting PMIC, analog sensor front-end, and BLE UART bridge. Use Value: 0.25 µA RTC + 0.02 µA LPM4.5 allows duty-cycled operation with sub-second wake latency and zero battery drain during idle. |
| Wearable Electronics | Sensor Management |
Use Scenario: Fitness bands measuring heart rate, motion, and skin temperature with multi-day battery life. IC Role / Device Role / Timing Role: Central MCU acquiring data from optical/accelerometer sensors, performing local FFT, and storing results in FRAM. Use Value: All-pin capacitive touch enables bezel-free UI; 64 KB FRAM stores weeks of raw sensor traces without flash wear concerns. | Use Scenario: Industrial condition-monitoring node aggregating vibration, humidity, and pressure readings across multiple transducers. IC Role / Device Role / Timing Role: Data concentrator with simultaneous ADC sampling, CRC integrity checking, and secure OTA update handling. Use Value: Hardware AES and 16-bit CRC ensure firmware authenticity and sensor data integrity in unattended deployments. |
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 |
|---|---|---|---|
| MSP430FR5948IRHAT | 48 KB FRAM, same 40-pin RHA package, identical peripheral set and LPM currents. | Lower memory footprint suits simpler sensor nodes where 64 KB is unnecessary. | Select when firmware size < 40 KB and cost optimization is prioritized without sacrificing package or toolchain compatibility. |
| MSP430FR5947IRHAT | 32 KB FRAM, 1 KB RAM, same RHA package and LFXT-only clock architecture. | Targeted at entry-level data loggers with minimal code and buffer requirements. | Choose for lowest-cost variant in same footprint when application fits within reduced memory and RAM constraints. |
Compared with MSP430FR5948IRHAT and MSP430FR5947IRHAT, the MSP430FR5949IRHAT provides maximum FRAM capacity in the 40-pin RHA family - enabling larger firmware images, extended data buffering, and future-proof feature expansion without PCB redesign.
Availability
MSP430FR5949IRHAT is available at Aetrix Electronics and suitable for metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply across long-lifecycle industrial programs.
Supply support for MSP430FR5949IRHAT 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, combining FRAM nonvolatility with sub-µA real-time operation to extend battery life in remote and maintenance-free systems.
FAQ
What is the maximum operating frequency of the MSP430FR5949IRHAT?
The MSP430FR5949IRHAT supports a maximum system clock frequency of 16 MHz using its digitally controlled oscillator (DCO) with 10 factory-trimmed settings. This frequency is achievable across the full 1.8 V–3.6 V supply range and enables real-time signal processing while maintaining ultra-low active-mode current of approximately 100 µA/MHz.
Does the MSP430FR5949IRHAT support high-frequency crystal oscillators (HFXT)?
No, the MSP430FR5949IRHAT does not support HFXT. It is specifically configured for low-frequency crystal oscillator (LFXT) operation only, with dedicated LFXIN (PJ.4) and LFXOUT (PJ.5) pins for 32-kHz crystal connection. HFXT functionality is excluded per device variant specification - confirmed in Table 3-1 and Section 1.4 of the SLAS704G datasheet.
How many ADC input channels does the MSP430FR5949IRHAT support?
The MSP430FR5949IRHAT supports up to 14 external analog input channels (A0–A13) plus two internal channels (temperature sensor and VREF) via its 12-bit ADC12_B module. This configuration is explicitly documented in Table 3-1 and Section 4.2 of the datasheet, distinguishing it from higher-channel variants like the MSP430FR5969.
What debug interface is supported by the MSP430FR5949IRHAT?
The MSP430FR5949IRHAT supports Spy-Bi-Wire (SBW) debugging through the TEST/SBWTCK (pin 21) and RST/NMI/SBWTDIO (pin 22) pins. This 2-wire interface enables full emulation, flash programming, and real-time trace without requiring a 4-wire JTAG header - reducing PCB complexity and test point count.
Is the MSP430FR5949IRHAT pin-compatible with other devices in the MSP430FR594x family?
Yes, the MSP430FR5949IRHAT is pin-compatible with MSP430FR5948IRHAT and MSP430FR5947IRHAT in the 40-pin RHA package. All share identical pin numbering, electrical characteristics, and peripheral mapping - allowing drop-in replacement for memory-scaling decisions without layout changes.
MSP430FR5949IRHAT 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:
MSP430FR5949IRHAT FAQ
1.How can I place an order for MSP430FR5949IRHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5949IRHAT 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 MSP430FR5949IRHAT reliable?
The price and inventory of MSP430FR5949IRHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5949IRHAT is usually 5 days.
3.What payment methods are accepted for MSP430FR5949IRHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5949IRHAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5949IRHAT?
MSP430FR5949IRHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5949IRHAT 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 MSP430FR5949IRHAT?
For technical support, including MSP430FR5949IRHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5949IRHAT requirements.
6.How does Aetrix verify that MSP430FR5949IRHAT is sourced from the original manufacturer or authorized distributors?
All MSP430FR5949IRHAT 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 MSP430FR5949IRHAT meets industry standards.
7.What is the process for return or replacement of MSP430FR5949IRHAT?
All MSP430FR5949IRHAT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5949IRHAT, 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 MSP430FR5949IRHAT part is unused and in its original packaging.
Return procedure for MSP430FR5949IRHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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