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Texas Instruments MSP430FR5847IRHAT
- Part No.:
- MSP430FR5847IRHAT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5847IRHAT.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:208
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Product details
Overview
MSP430FR5847IRHAT from Texas Instruments is an ultra-low-power 16-bit FRAM microcontroller with 32KB nonvolatile memory, 1KB RAM, and integrated 12-bit ADC (14 external channels), RTC, and dual eUSCI modules (UART/I²C/SPI). It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and data loggers requiring long-term retention without write endurance limits.
For engineers reviewing the MSP430FR5847IRHAT datasheet, MSP430FR5847IRHAT pinout, MSP430FR5847IRHAT application, or MSP430FR5847IRHAT equivalent, key selection factors include its LFXT-only clock system, 40-pin VQFN (RHA) package, RTC_B module with calendar/alarm, FRAM write endurance (10¹⁵ cycles), and capacitive touch I/O support on all pins.
Technical Context
The MSP430FR5847IRHAT implements the ULP CPUXV2 core with seven low-power modes, including LPM3.5 (RTC active, 0.25 µA typical) and LPM4.5 (shutdown, 0.02 µA typical). Its FRAM memory architecture enables unified program/data/storage space with 125 ns per-word writes and no erase-before-write overhead.
It integrates a 32-bit hardware multiplier, three-channel DMA, 16-channel analog comparator, and five 16-bit timers (TA0–TA3, TB0), with eUSCI_A0 supporting UART with auto-baud detection and IrDA, and eUSCI_B0 supporting I²C with multiple slave addressing and SPI.
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 nonvolatile memory with 10¹⁵ write cycles - eliminates flash wear-out in frequent logging applications |
| RAM Size | 1 KB SRAM for fast variable storage and stack operations during active mode |
| ADC Resolution | 12-bit SAR ADC with internal reference and sample-and-hold, supporting up to 14 external analog inputs |
| RTC Functionality | Real-time clock with calendar, alarm, and 32-kHz crystal support (LFXT only) - enables precise time-stamped data capture |
| Supply Voltage Range | 1.8 V to 3.6 V - compatible with coin-cell (e.g., CR2032) and single Li-ion battery systems |
| Ultra-Low-Power Modes | LPM3.5 (0.25 µA typ.) and LPM4.5 (0.02 µA typ.) - extends multi-year operation in energy-harvested sensor nodes |
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 - enables time-synchronized analog acquisition |
| P1.1/TA0.2/TA1CLK/COUT/A1/C1/VREF+/VeREF+ | Multi-function I/O | Positive reference output/input, ADC A1, comparator C1, and TA0/TA1 clock source - supports ratiometric sensor measurements |
| P1.3/TA1.2/UCB0STE/A3/C3 | Multi-function I/O | eUSCI_B0 SPI slave transmit enable, ADC A3, comparator C3 - allows direct interface to SPI sensors without GPIO toggling |
| P1.4/TB0.1/UCA0STE/A4/C4 | Multi-function I/O | eUSCI_A0 SPI slave transmit enable, ADC A4, comparator C4 - simplifies daisy-chained sensor networks |
| PJ.4/LFXIN & PJ.5/LFXOUT | Oscillator Terminals | Dedicated 32-kHz crystal connections for RTC_B - required for calendar/timekeeping; not shared with HFXT |
| RST/NMI/SBWTDIO | Reset & Debug | Active-low reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O - enables in-system programming and low-pin-count debugging |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 32 KB unified memory with 125 ns write speed and infinite write endurance - eliminates flash erase delays and wear leveling firmware |
| Capacitive Touch I/O | All GPIO pins support capacitive touch sensing without external components - reduces BOM cost and PCB area in wearable interfaces |
| Hardware CRC16 Engine | Dedicated peripheral for fast checksum generation - offloads CPU during firmware updates and data integrity verification |
| Low-Power Real-Time Clock (RTC_B) | Calendar mode with alarm interrupts in LPM3.5 at 0.25 µA - enables periodic wake-up for scheduled sensor reads without external timer IC |
| Three-Channel DMA | Automates ADC-to-FRAM transfers and peripheral-to-peripheral moves - preserves CPU bandwidth for application logic during burst sampling |
Applications
| Smart Utility Metering | Energy-Harvested Sensor Node |
|---|---|
Use Scenario: Tamper-resistant electricity/water/gas meter with hourly consumption logging and tamper event timestamping. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, storing calibrated parameters in FRAM, and maintaining accurate time via RTC_B with 32-kHz crystal. Use Value: 10¹⁵ FRAM write cycles ensure >10 years of daily logging without degradation; LPM3.5 current (0.25 µA) enables 10+ year battery life. | Use Scenario: Solar- or thermal-harvested environmental sensor node measuring temperature, humidity, and light every 5 minutes. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting PMIC, analog front-end, wireless transceiver wakeup, and time-stamped FRAM data storage. Use Value: Unified FRAM eliminates separate EEPROM/flash, reducing component count; RTC_B calendar ensures synchronized data aggregation across networked nodes. |
| Wearable Health Monitor | Industrial Data Logger |
Use Scenario: Compact wrist-worn device acquiring ECG, motion, and skin temperature with onboard signal processing. IC Role / Device Role / Timing Role: Primary MCU handling analog acquisition (ADC + comparator), motion interrupt handling (P1–P4 edge-triggered), and capacitive touch UI. Use Value: All-pin capacitive touch capability enables bezel-free design; 1.8 V minimum supply supports direct coin-cell operation without boost converter. | Use Scenario: Ruggedized field logger capturing vibration, pressure, and temperature in oil/gas or manufacturing environments. IC Role / Device Role / Timing Role: Standalone data acquisition unit with anti-tamper FRAM storage, RTC-driven timestamping, and SPI-connected sensors. Use Value: Radiation-resistant FRAM ensures data integrity in high-EMI industrial settings; 32KB FRAM stores >100,000 timestamped samples before upload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR58471IRHAT | I²C-capable eUSCI_B0 instead of UART-capable eUSCI_A0; identical FRAM/RAM/timers/peripherals | Better suited for I²C sensor ecosystems (e.g., Bosch BME280, ST LIS2DH); lacks UART bootloader over P2.0/P2.1 | Select when primary serial interface is I²C and UART is not required for field firmware updates |
| MSP430FR5848IRHAT | 48 KB FRAM (vs. 32 KB), same 1 KB RAM, identical peripherals and package | Enables larger firmware images or extended data buffering; no change to power profile or pin compatibility | Select when additional nonvolatile storage is needed for OTA firmware or extended logging without external memory |
Compared with MSP430FR58471IRHAT and MSP430FR5848IRHAT, the MSP430FR5847IRHAT offers optimal balance of UART-based firmware flexibility and 32KB FRAM capacity for compact, cost-sensitive sensor endpoints where I²C is secondary and code footprint is constrained.
Availability
MSP430FR5847IRHAT is available at Aetrix Electronics and suitable for smart utility metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply and long-term production continuity.
Supply support for MSP430FR5847IRHAT 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, personal electronics, and communications markets.
The MSP430 ULP FRAM portfolio delivers ultra-low-power microcontrollers combining ferroelectric RAM with intelligent peripherals for energy-constrained applications like batteryless sensing and multi-year data logging.
FAQ
What is the maximum operating frequency of the MSP430FR5847IRHAT?
The MSP430FR5847IRHAT supports a maximum system clock frequency of 16 MHz using its factory-trimmed DCO or external HFXT oscillator. However, this specific variant is LFXT-only (no HFXIN/HFXOUT pins), so its operational clock sources are limited to the DCO and 32-kHz LFXT - meaning the 16-MHz DCO is fully usable, while HFXT-based 16-MHz operation is not supported on the MSP430FR5847IRHAT.
Does the MSP430FR5847IRHAT support hardware UART bootloading?
Yes, the MSP430FR5847IRHAT supports hardware UART bootloading via the eUSCI_A0 module. Pins P2.0 (UCA0TXD) and P2.1 (UCA0RXD) serve as BSLTX and BSLRX, enabling firmware updates over UART without requiring JTAG hardware - a key feature confirmed in the device's BSL documentation and pin multiplexing table.
How many analog input channels does the MSP430FR5847IRHAT ADC support?
The MSP430FR5847IRHAT integrates the ADC12_B module with support for up to 14 external analog input channels (A0–A15, excluding A6 and A7 which are not routed to the RHA package), plus two internal references. This is explicitly documented in Table 3-1 (Device Comparison) and verified in the Signal Descriptions table for the 40-pin RHA package.
Is the RTC_B module functional on the MSP430FR5847IRHAT?
Yes, the RTC_B module is fully functional on the MSP430FR5847IRHAT. As an MSP430FR5x4x device with LFXT support (PJ.4/LFXIN and PJ.5/LFXOUT present), it meets the requirement stated in Section 1.4: "RTC_B is available only in conjunction with the LF crystal oscillator in MSP430FR5x6x and MSP430FR5x4x devices." Calendar, alarm, and calibration features are enabled.
What is the FRAM endurance specification for the MSP430FR5847IRHAT?
The MSP430FR5847IRHAT provides 10¹⁵ write cycle endurance for its 32KB FRAM - a value specified in the "Ultra-Low-Power Ferroelectric RAM (FRAM)" feature list and confirmed across all MSP430FR58xx family documentation. This exceeds flash-based MCUs by 100× and enables continuous logging without wear-out concerns.
MSP430FR5847IRHAT 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:
MSP430FR5847IRHAT FAQ
1.How can I place an order for MSP430FR5847IRHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5847IRHAT 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 MSP430FR5847IRHAT reliable?
The price and inventory of MSP430FR5847IRHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5847IRHAT is usually 5 days.
3.What payment methods are accepted for MSP430FR5847IRHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5847IRHAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5847IRHAT?
MSP430FR5847IRHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5847IRHAT 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 MSP430FR5847IRHAT?
For technical support, including MSP430FR5847IRHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5847IRHAT requirements.
6.How does Aetrix verify that MSP430FR5847IRHAT is sourced from the original manufacturer or authorized distributors?
All MSP430FR5847IRHAT 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 MSP430FR5847IRHAT meets industry standards.
7.What is the process for return or replacement of MSP430FR5847IRHAT?
All MSP430FR5847IRHAT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5847IRHAT, 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 MSP430FR5847IRHAT part is unused and in its original packaging.
Return procedure for MSP430FR5847IRHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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