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Texas Instruments MSP430FR5947IRHAT
- Part No.:
- MSP430FR5947IRHAT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5947IRHAT.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,235
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Product details
Overview
MSP430FR5947IRHAT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 32KB nonvolatile memory, 1KB RAM, and integrated 12-bit ADC (14 external + 2 internal channels), RTC, AES-256 encryption, and dual eUSCI modules (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 MSP430FR5947IRHAT datasheet, MSP430FR5947IRHAT pinout, MSP430FR5947IRHAT application, or MSP430FR5947IRHAT equivalent, this page delivers verified specifications, functional pin mapping for the 40-pin VQFN (RHA) package, real-world use cases in energy-harvested sensing, and two validated alternative parts with documented technical and application differences.
Technical Context
The MSP430FR5947IRHAT implements the ULP CPUXV2 core with seven low-power modes, including LPM3.5 (RTC active at 0.25 µA typical) and LPM4.5 (shutdown at 0.02 µA typical). Its FRAM architecture enables 125 ns per-word writes and 1015 write-cycle endurance - eliminating flash erase latency and wear constraints.
It integrates LFXT oscillator support (32 kHz crystal on PJ.4/PJ.5) but excludes HFXT; features three 16-bit Timer_A modules (TA0/TA1/TA2) and two Timer_B instances (TB0/TB0), plus eUSCI_A0 (UART/IrDA/SPI) and eUSCI_B0 (I²C/SPI), all accessible via multiplexed I/O pins with capacitive touch capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit CPUXV2, up to 16 MHz clock speed - enables deterministic real-time control with low code footprint |
| FRAM Capacity | 32 KB nonvolatile memory - unified program/data/storage space with no erase cycles required before write |
| RAM Size | 1 KB SRAM - sufficient for stack, buffers, and runtime variables in ultra-low-power sensor firmware |
| ADC Resolution | 12-bit SAR ADC with 14 external + 2 internal input channels - supports precision analog monitoring without external signal conditioning |
| Low-Power Modes | LPM3.5 (0.25 µA typ) with RTC active - enables calendar-aware wake-up for time-triggered sensor sampling |
| Crypto Engine | Hardware AES-256 coprocessor - accelerates secure firmware updates and encrypted sensor data transmission |
| Package Type | 40-pin VQFN (RHA), 6 mm × 6 mm - compact surface-mount footprint suitable for space-constrained IoT endpoints |
Pinout & Package
Package: 40-pin VQFN (RHA), 6 mm × 6 mm, exposed thermal pad (recommended connection to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PJ.4 / LFXIN | LFXT crystal input | Connects to 32 kHz tuning-fork crystal for RTC and low-frequency timing; required for LPM3.5 operation |
| PJ.5 / LFXOUT | LFXT crystal output | Completes crystal oscillator circuit; must be used with PJ.4 for stable 32 kHz reference |
| P1.0 / RTCCLK | RTC clock calibration output | Provides calibrated clock signal for external synchronization or frequency measurement |
| P2.0 / UCA0TXD | eUSCI_A0 UART transmit | Primary serial interface for debug logging or host communication; supports automatic baud-rate detection |
| P2.1 / UCA0RXD | eUSCI_A0 UART receive | Full-duplex UART channel; paired with P2.0 for asynchronous communication with sensors or gateways |
| P1.6 / UCB0SDA | eUSCI_B0 I²C data line | Open-drain bidirectional bus line for connecting to I²C peripherals (e.g., temperature, humidity sensors) |
| P1.7 / UCB0SCL | eUSCI_B0 I²C clock line | Master-generated clock for I²C transactions; supports standard and fast-mode speeds up to 400 kHz |
| RST/NMI/SBWTDIO | Reset / NMI / JTAG debug I/O | Multi-function pin for device reset, non-maskable interrupt, and 2-wire Spy-Bi-Wire programming/debug |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 32 KB unified memory with 125 ns write speed and 1015 endurance - eliminates flash erase delays and wear leveling overhead |
| Real-Time Clock (RTC_B) | Calendar mode with alarm and calibration registers - enables precise time-stamped data logging without external RTC IC |
| Capacitive Touch I/O | All GPIO pins support CTSI-based touch sensing - allows button/slider interfaces without external RC networks or dedicated controller |
| Hardware CRC16 Engine | Dedicated peripheral for checksum generation over memory blocks - ensures data integrity during FRAM writes or firmware updates |
| EnergyTrace++ Support | Integrated power profiling via Spy-Bi-Wire - enables real-time current measurement and low-power mode optimization during development |
Applications
| Smart Utility Metering | Energy-Harvested Sensor Node |
|---|---|
Use Scenario: Battery- or solar-powered water/gas meter collecting flow data hourly and transmitting via NB-IoT/LPWAN. IC Role / Device Role / Timing Role: Main controller managing ADC sampling, FRAM-based data buffering, RTC-driven scheduling, and secure UART/I²C comms. Use Value: 32KB FRAM retains 30+ days of timestamped readings without degradation; LPM3.5 extends battery life beyond 10 years. |
Use Scenario: Indoor environmental monitor powered by miniature solar cell, measuring temperature/humidity every 5 minutes. IC Role / Device Role / Timing Role: System-on-chip handling analog sensing, energy harvesting management, and BLE/Wi-Fi offload via UART. Use Value: Ultra-low active current (100 µA/MHz) and sub-µA standby enable operation under intermittent light; AES-256 secures OTA updates. |
| Wearable Health Monitor | Industrial Data Logger |
Use Scenario: Compact wrist-worn device tracking heart rate variability and motion using analog front-end and accelerometer. IC Role / Device Role / Timing Role: Central MCU acquiring analog biosignals, performing basic filtering, and storing processed metrics in FRAM. Use Value: Fast FRAM writes capture burst sensor data without latency; capacitive touch I/O enables gesture-based UI with zero BOM cost. |
Use Scenario: Ruggedized enclosure logging vibration, temperature, and pressure in factory machinery for predictive maintenance. IC Role / Device Role / Timing Role: Standalone logger with RTC-triggered sampling, FRAM ring buffer, and USB/UART upload on demand. Use Value: Radiation-resistant FRAM ensures data integrity in EMI-heavy environments; 1.8 V minimum supply supports wide-input DC-DC converters. |
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, 2 KB RAM - 16 KB more nonvolatile storage and double RAM vs. MSP430FR5947IRHAT | Suitable for firmware-over-the-air (FOTA) with dual-bank update or larger sensor fusion buffers | Select when extended code size or runtime data buffering is required; same pinout and peripheral set |
| MSP430FR59471IRHAT | Identical FRAM/RAM specs but includes I²C-capable BSL (P1.6/P1.7) instead of UART BSL (P2.0/P2.1) | Preferred where factory programming uses I²C infrastructure or board lacks UART routing to test points | Choose for production programming flexibility; otherwise functionally identical in end application |
Compared with MSP430FR5947IRHAT, MSP430FR5948IRHAT offers higher memory headroom for complex algorithms, while MSP430FR59471IRHAT swaps BSL interface type - both retain identical low-power performance, ADC capability, and RTC functionality for drop-in compatibility in most designs.
Availability
MSP430FR5947IRHAT is available at Aetrix Electronics and suitable for smart metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR5947IRHAT 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 for industrial, automotive, and consumer markets.
The MSP430FR59xx family is designed for ultra-low-power sensing and data acquisition systems where energy efficiency, nonvolatile memory reliability, and integration of analog/mixed-signal peripherals are critical.
FAQ
What is the maximum operating frequency of the MSP430FR5947IRHAT?
The MSP430FR5947IRHAT supports a maximum system clock frequency of 16 MHz via its digitally controlled oscillator (DCO). This frequency is factory-trimmed across 10 selectable settings and can be further calibrated using the built-in reference. The core executes instructions at this rate, enabling responsive real-time control while maintaining ultra-low power consumption in active mode (≈100 µA/MHz).
Does the MSP430FR5947IRHAT support hardware encryption?
Yes, the MSP430FR5947IRHAT includes a dedicated hardware AES-256 encryption/decryption coprocessor. It accelerates cryptographic operations for secure boot, firmware updates, and sensor data confidentiality without burdening the CPU. The module supports key sizes of 128 or 256 bits and integrates with the device's random number seed generator for secure key derivation.
Can the MSP430FR5947IRHAT operate without an external crystal?
Yes, the MSP430FR5947IRHAT can operate using its internal DCO and VLO (very-low-power oscillator) for basic timing, but the 32-kHz LFXT crystal (on PJ.4/PJ.5) is required for RTC_B calendar functionality and LPM3.5 operation. Without the crystal, RTC operates only in basic counter mode, and ultra-low-power sleep states lose timekeeping accuracy.
How many ADC input channels does the MSP430FR5947IRHAT support?
The MSP430FR5947IRHAT integrates a 12-bit ADC12_B module supporting 14 external analog inputs (A0–A13) and 2 internal references (VeREF±), totaling 16 configurable channels. Input selection is software-controlled, and conversions can be triggered by timers, software, or external signals - enabling synchronized multi-channel sampling for sensor arrays.
Is the MSP430FR5947IRHAT pin-compatible with other devices in the FR594x family?
Yes, the MSP430FR5947IRHAT in the 40-pin RHA package shares identical pinout and signal mapping with MSP430FR5948IRHAT, MSP430FR5949IRHAT, and MSP430FR59471IRHAT. This allows direct PCB reuse across variants differing only in FRAM size, RAM, or BSL interface - simplifying design scalability and inventory management.
MSP430FR5947IRHAT 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:
- 32KB (32K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
MSP430FR5947IRHAT FAQ
1.How can I place an order for MSP430FR5947IRHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5947IRHAT 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 MSP430FR5947IRHAT reliable?
The price and inventory of MSP430FR5947IRHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5947IRHAT is usually 5 days.
3.What payment methods are accepted for MSP430FR5947IRHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5947IRHAT transactions.
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4.How is shipping managed for MSP430FR5947IRHAT?
MSP430FR5947IRHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5947IRHAT 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 MSP430FR5947IRHAT?
For technical support, including MSP430FR5947IRHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5947IRHAT requirements.
6.How does Aetrix verify that MSP430FR5947IRHAT is sourced from the original manufacturer or authorized distributors?
All MSP430FR5947IRHAT 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 MSP430FR5947IRHAT meets industry standards.
7.What is the process for return or replacement of MSP430FR5947IRHAT?
All MSP430FR5947IRHAT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5947IRHAT, 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 MSP430FR5947IRHAT part is unused and in its original packaging.
Return procedure for MSP430FR5947IRHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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