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Texas Instruments MSP430FR59471IRHAR
- Part No.:
- MSP430FR59471IRHAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR59471IRHAR.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,016
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Product details
Overview
MSP430FR59471IRHAR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 32KB nonvolatile memory, 1KB RAM, 12-bit ADC (14 external channels), RTC with calendar/alarm, and I²C-capable eUSCI_B0. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes requiring long-term data retention and low active/standby current.
For engineers reviewing the MSP430FR59471IRHAR datasheet, MSP430FR59471IRHAR pinout, MSP430FR59471IRHAR application, or MSP430FR59471IRHAR equivalent, key selection criteria include its 40-pin VQFN (RHA) package, LFXT-only clock system (no HFXT), I²C bootloader support, and verified 0.25 µA LPM3.5 RTC current - critical for energy-harvested and wearable designs.
Technical Context
The MSP430FR59471IRHAR implements the CPUXV2 core with 16 registers and integrates a 32-bit hardware multiplier, 3-channel DMA, and unified FRAM memory space enabling simultaneous code execution and data logging. Its clock system relies exclusively on the low-frequency crystal oscillator (LFXT) with LFXIN/LFXOUT pins - no high-frequency crystal support.
Peripherals include five 16-bit timers (TA0–TA3, TB0), 16-channel analog comparator, AES256 encryption coprocessor, and dual eUSCI modules: eUSCI_A0/A1 support UART/IrDA/SPI, while eUSCI_B0 supports I²C (multi-address) and SPI - with I²C BSL enabled on P1.6/P1.7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit CPUXV2 RISC, up to 16 MHz operation - enables deterministic real-time control with low gate count. |
| FRAM Size | 32 KB nonvolatile memory - supports unlimited write cycles (10¹⁵ endurance), fast 125 ns/word writes, and unified program/data/storage space. |
| RAM Size | 1 KB SRAM - sufficient for stack, variables, and temporary buffers in ultra-low-power sensor firmware. |
| ADC Resolution | 12-bit SAR ADC with 14 external input channels - provides precision analog sensing for battery voltage, temperature, or environmental sensors. |
| RTC Functionality | Real-time clock with calendar and alarm in LPM3.5 mode - draws only 0.25 µA typical, enabling years of timekeeping on coin-cell batteries. |
| Supply Voltage Range | 1.8 V to 3.6 V - compatible with single Li-ion, two alkaline, or energy-harvesting sources without external regulation. |
| eUSCI Interfaces | eUSCI_A0/A1: UART/IrDA/SPI; eUSCI_B0: I²C (multi-slave address) + SPI - I²C BSL uses P1.6 (SDA) and P1.7 (SCL). |
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 capture. |
| P1.6/TB0.3/UCB0SIMO/UCB0SDA/TA0.0 | I²C SDA / Timer / GPIO | Primary I²C data line for bootloader and peripheral communication; also serves as TA0 capture/compare input. |
| P1.7/TB0.4/UCB0SOMI/UCB0SCL/TA1.0 | I²C SCL / Timer / GPIO | Primary I²C clock line for bootloader; supports synchronous slave addressing and secure firmware updates. |
| PJ.4/LFXIN | LF Crystal Input | Connects to 32.768 kHz crystal for RTC and low-power timing - no HFXT support per device variant specification. |
| PJ.5/LFXOUT | LF Crystal Output | Completes 32-kHz oscillator circuit; required for accurate calendar operation and LPM3.5 mode stability. |
| RST/NMI/SBWTDIO | Reset / Debug I/O | Single-wire JTAG (SBW) debug interface - enables in-circuit programming and real-time trace without dedicated JTAG header. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 32 KB nonvolatile memory with 10¹⁵ write endurance and 125 ns write speed - eliminates flash wear-out and enables frequent sensor log updates. |
| Ultra-Low-Power Modes | LPM3.5 (RTC active): 0.25 µA typical; LPM4.5 (shutdown): 0.02 µA - extends battery life to multi-year operation in metering and wearables. |
| Capacitive Touch I/O | All GPIO pins support capacitive touch sensing without external components - reduces BOM cost and PCB area in human-interface applications. |
| AES256 Security Coprocessor | Hardware-accelerated encryption/decryption - secures firmware updates and sensor data transmission without CPU overhead. |
| I²C Bootloader (BSL) | Factory-programmed ROM-based loader using P1.6 (SDA) and P1.7 (SCL) - enables field firmware upgrades over standard I²C without UART hardware. |
Applications
| Smart Utility Metering | Energy-Harvested Sensor Node |
|---|---|
Use Scenario: Gas/water/electricity meter with hourly consumption logging and tamper detection. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based data logs, and maintaining accurate time via integrated RTC. Use Value: 32 KB FRAM stores >1 year of hourly readings; 0.25 µA LPM3.5 RTC enables decade-scale battery life with lithium-thionyl chloride cells. | Use Scenario: Wireless soil moisture sensor powered by solar cell + supercapacitor. IC Role / Device Role / Timing Role: System-on-chip managing analog sensing, data compression, I²C communication to transceiver, and wake-up scheduling. Use Value: Unified FRAM allows atomic write of sensor+timestamp; capacitive touch I/O enables self-test button; I²C BSL simplifies over-the-air firmware patching. |
| Wearable Health Monitor | Industrial Sensor Management Hub |
Use Scenario: Wrist-worn pulse oximeter with continuous SpO₂ sampling and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Front-end signal conditioner and low-power scheduler coordinating ADC sampling, FRAM buffering, and host MCU handoff. Use Value: 12-bit ADC resolves small photodiode current variations; AES256 encrypts health data before transmission; 1.8 V operation matches coin-cell discharge curve. | Use Scenario: DIN-rail mounted gateway aggregating temperature, humidity, and vibration data from multiple field sensors. IC Role / Device Role / Timing Role: Local intelligence node performing sensor fusion, anomaly detection, and buffered storage before Ethernet upload. Use Value: 3-channel DMA offloads ADC-to-FRAM transfers; RTC calendar timestamps events for compliance reporting; I²C interface connects to multiple slave sensors. |
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 |
|---|---|---|---|
| MSP430FR5947IRHAR | UART bootloader (P2.0/P2.1); same FRAM/RAM/ADC/peripherals but lacks I²C BSL capability. | Suitable where UART debug port is available and I²C bus is reserved for sensor communication only. | Select MSP430FR5947IRHAR if UART-based firmware updates are preferred and I²C pins must remain free for peripherals. |
| MSP430FR5948IRHAR | 48 KB FRAM, 2 KB RAM, identical package and peripheral set - higher memory capacity without performance or power penalty. | Better suited for applications requiring larger firmware images or extended local data buffering (e.g., predictive maintenance analytics). | Choose MSP430FR5948IRHAR when additional FRAM headroom is needed for future feature expansion or firmware versioning. |
Compared with MSP430FR5947IRHAR and MSP430FR5948IRHAR, the MSP430FR59471IRHAR uniquely delivers I²C-based bootloader functionality in the 40-pin RHA package - enabling secure, pin-efficient firmware updates where UART resources are constrained or shared.
Availability
MSP430FR59471IRHAR is available at Aetrix Electronics and suitable for smart utility metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR59471IRHAR 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 personal electronics markets.
The MSP430 ULP FRAM portfolio targets energy-constrained applications such as metering, wearables, and sensor networks - combining ferroelectric memory with ultra-low-power architecture to eliminate flash limitations.
FAQ
What is the maximum operating frequency of the MSP430FR59471IRHAR?
The MSP430FR59471IRHAR supports a maximum system clock frequency of 16 MHz using its factory-trimmed DCO or external LFXT. This enables real-time processing of sensor data and communication protocols while maintaining sub-100 µA/MHz active current efficiency - consistent with the MSP430FR59471IRHAR's ultra-low-power design goals.
Does the MSP430FR59471IRHAR support high-frequency crystal oscillators (HFXT)?
No, the MSP430FR59471IRHAR does not support HFXT. As confirmed in the device comparison table and functional block diagram, it belongs to the MSP430FR594x family variant with LFXT-only clocking - pins PJ.6/HFXIN and PJ.7/HFXOUT are not functional. The MSP430FR59471IRHAR relies solely on the 32.768 kHz crystal connected to PJ.4/LFXIN and PJ.5/LFXOUT.
How many I/O pins does the MSP430FR59471IRHAR have, and which support capacitive touch?
The MSP430FR59471IRHAR provides 33 general-purpose I/O pins in its 40-pin RHA package. All I/O ports (P1–P4, PJ) support capacitive touch sensing without external components - a key feature enabling buttonless interfaces in wearables and industrial HMI designs using the MSP430FR59471IRHAR.
What is the purpose of the VREF-/VeREF- and VREF+/VeREF+ pins on the MSP430FR59471IRHAR?
The VREF-/VeREF- (P1.0) and VREF+/VeREF+ (P1.1) pins on the MSP430FR59471IRHAR serve dual roles: they output internal reference voltages for the 12-bit ADC and accept external reference inputs. This flexibility allows precise ratiometric measurements using external sensors or improves accuracy when internal references are insufficient - directly supporting the MSP430FR59471IRHAR's role in precision analog applications.
Can the MSP430FR59471IRHAR perform secure firmware updates, and how?
Yes, the MSP430FR59471IRHAR supports secure firmware updates via its hardware AES256 encryption coprocessor and factory-programmed I²C bootloader (BSL). Firmware images encrypted with AES256 can be transmitted over I²C to P1.6 (SDA) and P1.7 (SCL), then decrypted and validated in ROM before loading into FRAM - ensuring authenticated, tamper-resistant updates for the MSP430FR59471IRHAR in field-deployed devices.
MSP430FR59471IRHAR 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:
MSP430FR59471IRHAR FAQ
1.How can I place an order for MSP430FR59471IRHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR59471IRHAR 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 MSP430FR59471IRHAR reliable?
The price and inventory of MSP430FR59471IRHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR59471IRHAR is usually 5 days.
3.What payment methods are accepted for MSP430FR59471IRHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR59471IRHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR59471IRHAR?
MSP430FR59471IRHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR59471IRHAR 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 MSP430FR59471IRHAR?
For technical support, including MSP430FR59471IRHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR59471IRHAR requirements.
6.How does Aetrix verify that MSP430FR59471IRHAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR59471IRHAR 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 MSP430FR59471IRHAR meets industry standards.
7.What is the process for return or replacement of MSP430FR59471IRHAR?
All MSP430FR59471IRHAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR59471IRHAR, 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 MSP430FR59471IRHAR part is unused and in its original packaging.
Return procedure for MSP430FR59471IRHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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