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Texas Instruments MSP430FR58471IRHAR
- Part No.:
- MSP430FR58471IRHAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR58471IRHAR.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,526
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Product details
Overview
MSP430FR58471IRHAR 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 channels), RTC, 32-bit hardware multiplier, and dual eUSCI modules supporting UART and I²C. It operates from 1.8 V to 3.6 V and targets energy-constrained sensor nodes and metering applications.
For engineers reviewing the MSP430FR58471IRHAR datasheet, MSP430FR58471IRHAR pinout, MSP430FR58471IRHAR application, or MSP430FR58471IRHAR equivalent, key selection criteria include its LFXT-only clock architecture, 40-pin VQFN (RHA) package, I²C-capable BSL, real-time clock with calendar mode, and sub-µA LPM3.5 current consumption - all critical for battery-powered data logging and wearable electronics design.
Technical Context
The MSP430FR58471IRHAR implements the MSP430 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 enables fast writes (125 ns/word) and 1015 write-cycle endurance without wear leveling.
It integrates two eUSCI modules: eUSCI_A0 supports UART/IrDA/SPI; eUSCI_B0 supports I²C (with multiple slave addressing) and SPI. The device lacks HFXT support and uses only LFXT (32 kHz crystal on PJ.4/PJ.5) for RTC and low-frequency timing - confirmed by family documentation and pinout constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit MSP430 CPUXV2, up to 16 MHz clock speed - enables deterministic real-time control in ultra-low-power systems |
| FRAM Memory | 32 KB nonvolatile FRAM - unified program/data/storage space with 10¹⁵ write endurance and no erase cycles required |
| RAM | 1 KB SRAM - sufficient for stack, variables, and small buffers during active operation |
| ADC | 12-bit ADC with 14 external input channels - supports precision analog sensing without external multiplexers |
| RTC | Real-Time Clock with calendar and alarm - powered in LPM3.5 (0.25 µA typical), clocked by 32-kHz LFXT crystal |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, or multi-cell alkaline battery systems |
| Low-Power Modes | LPM3.5 = 0.25 µA (RTC active); LPM4.5 = 0.02 µA (full shutdown) - extends battery life to years in intermittent-sensing applications |
Pinout & Package
Package: 40-pin VQFN (RHA), 6 mm × 6 mm body size, 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, comparator C0, reference voltage input - enables time-stamped analog acquisition |
| PJ.4/LFXIN & PJ.5/LFXOUT | Crystal oscillator terminals | Connects 32-kHz tuning-fork crystal for RTC and low-frequency timing - mandatory for calendar functionality |
| P1.6/UCB0SDA & P1.7/UCB0SCL | I²C interface pins | Support I²C BSL and peripheral communication - used for firmware updates and sensor interfacing without UART pins |
| RST/NMI/SBWTDIO & TEST/SBWTCK | JTAG/Spy-Bi-Wire debug | Enables programming and debugging via 2-wire interface - reduces PCB footprint vs. full JTAG |
| DVCC & DVSS / AVCC & AVSS | Power supply domains | Separate digital/analog supplies improve ADC SNR and reduce coupling noise in mixed-signal operation |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 32 KB unified memory with 125 ns write speed and 10¹⁵ endurance - eliminates flash wear-out concerns in frequent-data-logging systems |
| Capacitive Touch I/O | All GPIO pins support capacitive touch sensing without external components - enables direct integration of user interfaces in wearables |
| eUSCI_B0 I²C Bootloader | Hardware I²C BSL on P1.6/P1.7 - allows field firmware updates via I²C bus, avoiding dedicated UART lines or connectors |
| Low-Power RTC Domain | LPM3.5 mode draws 0.25 µA while maintaining calendar/timekeeping - supports decade-scale battery life in environmental monitors |
| 32-Bit Hardware Multiplier | MPY32 module executes multiply operations in one cycle - accelerates signal processing (e.g., FFT, filtering) without CPU overhead |
Applications
| Smart Metering | Energy-Harvested Sensor Node |
|---|---|
Use Scenario: Electricity/water/gas meter with tamper detection, pulse counting, and secure data storage. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based log storage, and maintaining accurate time via RTC. Use Value: 32KB FRAM stores decades of hourly consumption data; LPM3.5 RTC ensures timestamp accuracy during battery backup. | Use Scenario: Wireless temperature/humidity node powered by solar cell + supercapacitor. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting, sensor readout, I²C sensor interfacing, and scheduled BLE wake-up. Use Value: Sub-µA standby current extends runtime between harvest events; FRAM retains state across power loss without backup capacitor. |
| Wearable Health Monitor | Data Logger for Industrial Sensors |
Use Scenario: Compact wrist-worn device measuring heart rate, motion, and skin temperature. IC Role / Device Role / Timing Role: Central MCU handling capacitive touch UI, analog front-end sampling, and real-time activity tracking. Use Value: All-GPIO capacitive touch eliminates BOM cost; 12-bit ADC resolves biometric signal nuances without external amplifiers. | Use Scenario: Ruggedized enclosure logging vibration, pressure, and temperature in factory equipment. IC Role / Device Role / Timing Role: Standalone logger with RTC-triggered sampling, FRAM-based circular buffer, and I²C sensor hub. Use Value: I²C BSL enables remote firmware patching; 10¹⁵ FRAM writes ensure >10-year reliability under continuous 1 Hz logging. |
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 |
|---|---|---|---|
| MSP430FR5847IRHAR | Identical FRAM/RAM/ADC/peripherals but UART BSL instead of I²C BSL; same 40-pin RHA package and LFXT-only clocking | Requires UART interface for firmware updates; unsuitable where I²C bus is preferred or UART pins are unavailable | Select MSP430FR5847IRHAR if UART-based programming and debugging infrastructure is already deployed |
| MSP430FR5969IPM | 64KB FRAM, 2KB RAM, 48-pin LQFP, includes HFXT support and enhanced peripherals (e.g., more timers, DMA channels) | Higher memory and performance margin; supports high-frequency crystal for precise timing beyond RTC (e.g., audio sampling) | Select MSP430FR5969IPM when future scalability, larger code size, or HFXT-dependent functions are required |
Compared with MSP430FR5847IRHAR, the MSP430FR58471IRHAR provides identical core specs but replaces UART BSL with I²C BSL - simplifying firmware updates in I²C-dense systems. Against MSP430FR5969IPM, it trades memory and HFXT capability for lower cost and smaller footprint in fixed-function, long-life sensor applications.
Availability
MSP430FR58471IRHAR is available at Aetrix Electronics and suitable for smart metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply and long-term production continuity.
Supply support for MSP430FR58471IRHAR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The MSP430 ULP FRAM portfolio targets energy-constrained applications such as battery-powered sensors, meters, and wearables - emphasizing ultra-low active/standby current, FRAM reliability, and integrated analog peripherals.
FAQ
What is the maximum operating frequency of the MSP430FR58471IRHAR?
The MSP430FR58471IRHAR supports a maximum system clock frequency of 16 MHz using its internal DCO or external LFXT. It does not support HFXT, so high-frequency crystal oscillation (e.g., 1–8 MHz) is unavailable - all timing above 32 kHz relies on the digitally controlled oscillator calibrated against the 32-kHz LFXT reference.
Does the MSP430FR58471IRHAR support hardware UART communication?
Yes, the MSP430FR58471IRHAR includes eUSCI_A0, which supports UART with automatic baud-rate detection and IrDA encoding/decoding. However, its bootloader (BSL) is I²C-only (on P1.6/P1.7), not UART - unlike the pin-compatible MSP430FR5847IRHAR variant.
What crystal oscillator configuration is required for RTC operation on the MSP430FR58471IRHAR?
The MSP430FR58471IRHAR requires a 32.768-kHz tuning-fork crystal connected between PJ.4 (LFXIN) and PJ.5 (LFXOUT) to enable RTC calendar functionality. This LFXT configuration is mandatory - the device lacks HFXT support and cannot derive RTC timing from the DCO or VLO sources alone.
How many ADC input channels does the MSP430FR58471IRHAR support?
The MSP430FR58471IRHAR supports 14 external analog input channels (A0–A13) plus 2 internal references (VeREF±), as documented in the device comparison table and signal descriptions. This differs from higher-tier variants like MSP430FR5869 (16 external channels) and confirms its optimized role in mid-complexity sensing applications.
Is the MSP430FR58471IRHAR pin-compatible with other devices in the MSP430FR584x family?
Yes, the MSP430FR58471IRHAR shares the same 40-pin VQFN (RHA) package and pinout with MSP430FR5847IRHAR, MSP430FR5848IRHAR, and MSP430FR5849IRHAR. Functional differences (e.g., FRAM size, BSL type) do not affect physical compatibility - enabling drop-in replacement within the RHA package group when design constraints permit.
MSP430FR58471IRHAR 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:
MSP430FR58471IRHAR FAQ
1.How can I place an order for MSP430FR58471IRHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR58471IRHAR 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 MSP430FR58471IRHAR reliable?
The price and inventory of MSP430FR58471IRHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR58471IRHAR is usually 5 days.
3.What payment methods are accepted for MSP430FR58471IRHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR58471IRHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR58471IRHAR?
MSP430FR58471IRHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR58471IRHAR 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 MSP430FR58471IRHAR?
For technical support, including MSP430FR58471IRHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR58471IRHAR requirements.
6.How does Aetrix verify that MSP430FR58471IRHAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR58471IRHAR 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 MSP430FR58471IRHAR meets industry standards.
7.What is the process for return or replacement of MSP430FR58471IRHAR?
All MSP430FR58471IRHAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR58471IRHAR, 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 MSP430FR58471IRHAR part is unused and in its original packaging.
Return procedure for MSP430FR58471IRHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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