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Texas Instruments MSP430FR5947IDA
- Part No.:
- MSP430FR5947IDA
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5947IDA.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,721
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Product details
Overview
MSP430FR5947IDA 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, AES256 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 and secure firmware updates.
For engineers reviewing the MSP430FR5947IDA datasheet, MSP430FR5947IDA pinout, MSP430FR5947IDA application, or MSP430FR5947IDA equivalent, key selection criteria include LFXT-only clock support, TSSOP-38 package constraints, FRAM endurance (10¹⁵ write cycles), LPM3.5 RTC current (0.25 µA), and capacitive touch I/O capability without external components.
Technical Context
The MSP430FR5947IDA implements the CPUXV2 core with 16 registers and executes instructions at up to 16 MHz using a factory-trimmed DCO. Its low-power architecture supports seven operating modes, including LPM3.5 (RTC active) and LPM4.5 (shutdown), enabled by SVS brownout detection and programmable port pullup/pulldown.
Peripherals include a 32-bit hardware multiplier, three-channel DMA, five 16-bit timers (TA0–TA3, TB0), 16-channel analog comparator, and eUSCI_A0/eUSCI_B0 supporting UART, SPI, and I²C - all accessible via multiplexed I/O pins in the 38-pin TSSOP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz clock speed for deterministic real-time control |
| FRAM Size | 32 KB unified nonvolatile memory enabling instant writes, no erase cycles, and 10¹⁵ endurance |
| RAM Size | 1 KB SRAM for fast variable storage and stack operations during active mode |
| ADC Resolution | 12-bit SAR ADC with 14 external + 2 internal input channels and integrated reference |
| RTC Support | Real-time clock with calendar and alarm functions, clocked only by LFXT (32-kHz crystal) |
| Supply Voltage | 1.8 V to 3.6 V range, with minimum limited by SVS thresholds for reliable brownout protection |
| Low-Power Mode | LPM3.5 draws 0.25 µA typical with RTC active - critical for multi-year battery life in metering |
Pinout & Package
TSSOP-38 package (12.5 mm × 6.2 mm), thermally enhanced for industrial ambient operation; pin-compatible with other MSP430FR594x DA variants but excludes HFXIN/HFXOUT pins.
| 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 |
| P1.1/TA0.2/TA1CLK/COUT/A1/C1/VREF+/VeREF+ | Multi-function I/O | Positive reference output, ADC channel A1 input, comparator output, and TA1 clock source |
| P3.0–P3.3/A12–A15/C12–C15 | Analog I/O | Four dedicated ADC inputs (A12–A15) and comparator inputs (C12–C15) for sensor interfacing |
| P1.3/TA1.2/UCB0STE/A3/C3 | Peripheral I/O | eUSCI_B0 SPI slave transmit enable, ADC channel A3, and comparator input C3 |
| PJ.4/LFXIN & PJ.5/LFXOUT | Oscillator Interface | Dedicated 32-kHz crystal connections for RTC timing - no HFXT support on this variant |
| RST/NMI/SBWTDIO | Control Terminal | Reset, non-maskable interrupt, and Spy-Bi-Wire debug interface for programming and emulation |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 32 KB unified memory enables simultaneous code execution and data logging without wear leveling |
| Capacitive Touch I/O | All GPIO pins support touch sensing without external RC networks - reduces BOM cost and board space |
| AES256 Encryption Coprocessor | Hardware-accelerated encryption/decryption secures firmware updates and sensor data in transit |
| Ultra-Low-Power RTC | 0.25 µA typical current in LPM3.5 allows decade-scale timekeeping on coin-cell batteries |
| Programmable Port Pulls | Configurable internal pullup/pulldown resistors eliminate external bias components for flexible signal routing |
Applications
| Metering | Energy-Harvested Sensor Nodes |
|---|---|
Use Scenario: Smart water/gas meters with tamper detection and hourly consumption logging. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based data history, and maintaining RTC-synchronized timestamps. Use Value: 32KB FRAM stores >10 years of hourly readings; 0.25 µA LPM3.5 extends battery life beyond 15 years. | Use Scenario: Wireless environmental sensors powered by solar cells or thermal harvesters. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting regulation, ADC sampling, and secure BLE packet formation. Use Value: Unified FRAM eliminates flash erase delays during intermittent power events; AES256 protects OTA update integrity. |
| Wearable Electronics | Sensor Management |
Use Scenario: Fitness trackers monitoring heart rate, motion, and skin temperature with multi-day battery life. IC Role / Device Role / Timing Role: Central MCU handling capacitive touch UI, analog sensor fusion, and low-power sleep scheduling. Use Value: All-port capacitive touch enables bezel-free design; 1.8 V minimum supply supports direct Li-ion cell operation. | Use Scenario: Industrial condition-monitoring nodes collecting vibration, temperature, and humidity data. IC Role / Device Role / Timing Role: Data aggregator with timestamped FRAM storage, CRC-16 checksum validation, and UART/I²C peripheral bridging. Use Value: 10¹⁵ FRAM write cycles ensure >20 years of daily 1000-sample logging without degradation. |
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 |
|---|---|---|---|
| MSP430FR5948IDA | 48 KB FRAM, same 1 KB RAM, identical TSSOP-38 package and peripheral set | Higher memory headroom for larger firmware or extended data buffers in long-duration logging | Select when firmware size exceeds 32 KB or additional FRAM-based ring buffer capacity is required |
| MSP430FR59471IDA | Same 32 KB FRAM/1 KB RAM, but includes I²C-capable BSL (P1.6/P1.7) instead of UART BSL | Enables secure bootloader updates over I²C bus in systems lacking UART resources | Select when field firmware updates must occur via I²C rather than UART, with no layout change needed |
Compared with MSP430FR5948IDA and MSP430FR59471IDA, the MSP430FR5947IDA offers optimal balance of memory, security, and interface flexibility for cost-sensitive, battery-constrained sensor nodes where UART-based BSL suffices and 32 KB FRAM meets firmware+data requirements.
Availability
MSP430FR5947IDA is available at Aetrix Electronics and suitable for metering, wearable electronics, and sensor management applications requiring stable component supply, long-term lifecycle assurance, and TI-qualified industrial-grade reliability.
Supply support for MSP430FR5947IDA 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 measurement applications, combining FRAM nonvolatility with sub-µA real-time operation and integrated analog peripherals.
FAQ
What is the maximum operating frequency of the MSP430FR5947IDA?
The MSP430FR5947IDA supports a maximum system clock frequency of 16 MHz, achieved using its factory-trimmed DCO oscillator. This frequency is fully supported across the entire 1.8 V to 3.6 V supply range and enables deterministic real-time response for time-critical sensor sampling and control loops without requiring external high-frequency crystals.
Does the MSP430FR5947IDA support high-frequency crystal oscillation (HFXT)?
No, the MSP430FR5947IDA does not support HFXT. It is specifically configured for low-frequency crystal operation only, with dedicated LFXIN (PJ.4) and LFXOUT (PJ.5) pins for 32-kHz crystals. The device lacks HFXIN/HFXOUT pins entirely - confirmed by its TSSOP-38 pinout and family documentation restricting HFXT to MSP430FR595x and MSP430FR596x variants.
How many ADC input channels does the MSP430FR5947IDA support?
The MSP430FR5947IDA integrates a 12-bit ADC12_B module supporting 14 external analog inputs (A0–A15, excluding A6 and A7) plus 2 internal channels (temperature sensor and VCC/2 reference), for a total of 16 selectable sources. Channel mapping is fixed per pin assignment in the TSSOP-38 package, with no reconfigurable analog mux beyond the documented A0–A15 set.
What debug interface is supported by the MSP430FR5947IDA?
The MSP430FR5947IDA supports Spy-Bi-Wire (SBW) debug via the TEST/SBWTCK (pin 19) and RST/NMI/SBWTDIO (pin 20) pins. This two-wire interface enables full JTAG-equivalent functionality - including flash programming, real-time register inspection, and breakpoint execution - using TI's MSP-FET and compatible emulators without requiring a full 4-pin JTAG header.
Is the MSP430FR5947IDA pin-compatible with other MSP430FR594x devices in TSSOP-38?
Yes, the MSP430FR5947IDA shares identical pinout, electrical characteristics, and package dimensions with MSP430FR5948IDA and MSP430FR5949IDA in the TSSOP-38 (DA) package. All three variants use the same 38-pin mapping, including identical placement of LFXIN/LFXOUT, ADC inputs, and eUSCI signals - enabling drop-in replacement within the FR594x DA family for memory or feature scaling.
MSP430FR5947IDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- Series:
- MSP430™ FRAM
- Packaging:
- Tube
- 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:
- 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 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5947IDA FAQ
1.How can I place an order for MSP430FR5947IDA through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5947IDA 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 MSP430FR5947IDA reliable?
The price and inventory of MSP430FR5947IDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5947IDA is usually 5 days.
3.What payment methods are accepted for MSP430FR5947IDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5947IDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5947IDA?
MSP430FR5947IDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5947IDA 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 MSP430FR5947IDA?
For technical support, including MSP430FR5947IDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5947IDA requirements.
6.How does Aetrix verify that MSP430FR5947IDA is sourced from the original manufacturer or authorized distributors?
All MSP430FR5947IDA 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 MSP430FR5947IDA meets industry standards.
7.What is the process for return or replacement of MSP430FR5947IDA?
All MSP430FR5947IDA units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5947IDA, 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 MSP430FR5947IDA part is unused and in its original packaging.
Return procedure for MSP430FR5947IDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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