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Texas Instruments MSP430FR6041IPNR
- Part No.:
- MSP430FR6041IPNR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430FR6041IPNR.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,248
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Product details
Overview
MSP430FR6041IPNR from Texas Instruments is a 16-MHz ultrasonic sensing microcontroller with integrated USS_A analog front end, 32KB FRAM, 12KB RAM, and 12-bit 8-MSPS sigma-delta ADC optimized for battery-powered water/gas metering. It delivers ±12.5-ps dToF accuracy for water flow, achieves ±1% accuracy over 500:1 dynamic range, and operates at 3 µA in active measurement mode (1 result/sec) on 1.8–3.6 V supply.
For engineers reviewing the MSP430FR6041IPNR datasheet, MSP430FR6041IPNR pinout, MSP430FR6041IPNR application, or MSP430FR6041IPNR equivalent, key selection criteria include ultrasonic time-of-flight resolution (<5 ps), integrated PPG/PHY/PGA signal chain, LEA-accelerated FFT processing, FRAM endurance (10¹⁵ writes), and LPM3.5 RTC operation at 450 nA.
Technical Context
The MSP430FR6041IPNR implements a dedicated ultrasonic sensing subsystem (USS_A) comprising a programmable pulse generator (PPG), low-impedance 4-Ω PHY driver, 30.8-dB PGA, and high-speed SDHS ADC - all synchronized to a 68–80 MHz PLL for precise time-of-flight capture. Its LEA coprocessor executes 256-point complex FFT independently of the CPU, enabling real-time flow computation with 40× speedup versus Cortex-M0+.
It integrates metering-specific peripherals including MTIF (pulse generation/counting up to 1024 p/s), 8-mux LCD driver (248 segments), AES256 encryption, and capacitive-touch I/O on all pins. The device supports dual crystal inputs (LFXT/HFXT), DCO trimming, and ultra-low-power modes: LPM3.5 (450 nA with RTC) and LPM4.5 (30 nA shutdown).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz clock - enables deterministic real-time ultrasonic signal processing with minimal latency. |
| FRAM Capacity | 32 KB nonvolatile memory - supports unified code/data/storage with 125 ns write speed and 10¹⁵ endurance for frequent metering log updates. |
| USS_A ADC | 12-bit sigma-delta SDHS, 8 MSPS output rate - captures high-fidelity ultrasonic echo waveforms with >100 dB SNR for sub-ps time resolution. |
| dToF Accuracy (Water) | ±12.5 ps across temperature and flow rates - ensures ±1% volumetric accuracy over 500:1 dynamic range (1–8800 L/h on 25-mm pipe). |
| Low-Power Mode LPM3.5 | 450 nA with RTC running from 3.7-pF crystal - enables decade-scale battery life in smart meters with daily wake-up and measurement. |
| LEA Subsystem | 8 KB shared RAM, hardware-accelerated FFT - offloads CPU for energy-efficient spectral analysis of ultrasonic signals without external DSP. |
| Supply Voltage Range | 1.8 V to 3.6 V - compatible with primary lithium batteries (e.g., 3.6 V Li-SOCl₂) and regulated industrial supplies. |
Pinout & Package
LQFP-80 package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad; pin-compatible with MSP430FR6043IPN and MSP430FR60431IPN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0_IN / CH1_IN | Ultrasonic transducer input channels | Differential analog inputs to USS_A PGA - accept echo signals from standard 2.5-MHz transducers with programmable gain (–6.5 to 30.8 dB). |
| CH0_OUT / CH1_OUT | Ultrasonic transducer drive outputs | Low-impedance (4 Ω) PHY outputs from USS_A - deliver multi-tone excitation pulses with precise timing control for zero-flow drift minimization. |
| USSXTIN / USSXTOUT | USS_A external timing interface | Supports external crystal or oscillator reference for USS_A PLL - enables stable 68–80 MHz clock generation independent of system clocks. |
| PVCC / PVSS | Analog power supply rails for USS_A | Isolated 1.8–3.6 V power domain - prevents digital noise coupling into sensitive ultrasonic signal path. |
| MTIF_PIN_EN / MTIF_OUT_IN | Metering test interface control and pulse I/O | Enables hardware pulse generation (≤1024 p/s) and counting (16-bit) for metrological calibration and utility pulse output compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Ultrasonic Sensing Solution (USS_A) | Complete analog signal chain (PPG + PHY + PGA + SDHS ADC) eliminates ≥6 external components vs discrete solutions - reduces BOM cost and PCB area in meter designs. |
| Low-Energy Accelerator (LEA) | Hardware FFT engine executing 256-point complex transform in <100 µs - enables real-time Doppler analysis and harmonic rejection without CPU intervention or added power. |
| Ferroelectric RAM (FRAM) | 32 KB unified memory with 125 ns write time and radiation tolerance - ideal for secure, high-cycle data logging (e.g., hourly flow records, tamper events) in utility-grade meters. |
| Metering Test Interface (MTIF) | Dedicated pulse generator/counter operating in LPM3.5 at 200 nA - meets EN 1434 and ISO 4064 pulse-output requirements while preserving battery life. |
| Capacitive-Touch I/O | All 57 GPIO support CTSIO without external RC networks - enables sealed, waterproof user interfaces (e.g., wake-on-touch buttons) in harsh environmental enclosures. |
Applications
| Ultrasonic Smart Water Meter | Ultrasonic Smart Gas Meter |
|---|---|
Use Scenario: Residential/commercial water metering with bidirectional flow detection, leak monitoring, and remote AMI reporting via NB-IoT or LoRaWAN. IC Role / Device Role / Timing Role: Primary metrology SoC performing dToF calculation, flow integration, temperature compensation, and secure data storage using FRAM. Use Value: Achieves ±1% accuracy over 500:1 dynamic range (1–8800 L/h) with <5 ps time resolution - exceeds OIML R49 Class B requirements while consuming only 3 µA average current. |
Use Scenario: Industrial gas metering for natural gas distribution with pressure/temperature compensation and pulse output to SCADA systems. IC Role / Device Role / Timing Role: Core sensor processor executing ultrasonic transit-time analysis, density correction, and metrological pulse generation via MTIF. Use Value: Delivers ±1% accuracy up to 12,000 L/h with 200:1 range and ±250-ps dToF stability - compliant with EN 14236 and ISO 4064 Class 1.5 standards. |
| Ultrasonic Smart Heat Meter | Flow Transmitter (4–20 mA) |
Use Scenario: District heating/cooling systems requiring simultaneous forward/reverse flow and ΔT measurement for thermal energy calculation. IC Role / Device Role / Timing Role: Dual-channel ultrasonic processor acquiring time-of-flight on two independent paths, computing flow direction and velocity, and interfacing with external RTDs. Use Value: Supports differential dToF measurement with <12.5-ps precision - enables sub-0.5% thermal energy accuracy under variable temperature gradients and low-flow conditions. |
Use Scenario: Industrial process control where ultrasonic flow data must be converted to standardized 4–20 mA analog output for PLC integration. IC Role / Device Role / Timing Role: Standalone flow computation unit with UART/I²C host interface and configurable analog output driver (via external DAC or PWM filter). Use Value: Integrates MTIF pulse output and eUSCI_A/B serial interfaces - simplifies connection to HART modems or 4–20 mA transmitter ICs without additional microcontrollers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrasonic sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR6043IPNR | 64 KB FRAM, full LCD_C driver (248 segments), identical USS_A/LEA/MTIF peripherals | Required when display support (e.g., local meter readout) or extended data logging capacity is needed | Select for designs needing larger nonvolatile storage or integrated LCD interface without external controller. |
| MSP430FR5041IPMR | 32 KB FRAM, no LCD_C, 44 GPIO (vs 57), same USS_A/LEA/MTIF but reduced timer count and no LCDS outputs | Suitable for compact, cost-sensitive meters without local display or advanced timing features | Choose for space-constrained, low-pin-count applications where LCD and extra timers are unnecessary. |
Compared with MSP430FR6043IPNR, the MSP430FR6041IPNR trades LCD support and double FRAM for identical ultrasonic metrology performance and pin compatibility; versus MSP430FR5041IPMR, it adds 13 GPIO, full LCDS routing, and enhanced timer resources - critical for multi-sensor synchronization and display-driven UIs.
Availability
MSP430FR6041IPNR is available at Aetrix Electronics and suitable for ultrasonic smart water meter, ultrasonic smart gas meter, and flow transmitter applications requiring stable component supply, long-term lifecycle assurance, and metrological traceability.
Supply support for MSP430FR6041IPNR 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 specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer markets.
The MSP430FR604x product line is engineered specifically for ultrasonic flow measurement in utility meters - integrating high-precision time-of-flight sensing, ultra-low-power operation, and metrological compliance into a single-chip solution.
FAQ
What is the primary metrological function of the MSP430FR6041IPNR?
The MSP430FR6041IPNR serves as a complete ultrasonic flow metrology SoC, performing differential time-of-flight (dToF) measurement with ±12.5-ps accuracy for water and ±250-ps for gas, enabling ±1% volumetric accuracy per ISO 4064 and EN 14236. Its USS_A subsystem handles excitation, echo acquisition, and timing - all within the MSP430FR6041IPNR die.
Does the MSP430FR6041IPNR support external ultrasonic transducers operating above 1 MHz?
Yes, the MSP430FR6041IPNR directly interfaces standard ultrasonic sensors up to 2.5 MHz via its USS_A PHY, which provides low-impedance (4 Ω) drive and programmable pulse generation. The integrated PGA (–6.5 dB to 30.8 dB gain) and 8-MSPS SDHS ADC ensure high-fidelity capture of high-frequency echoes required for precision dToF calculation in the MSP430FR6041IPNR.
How does the LEA subsystem improve ultrasonic signal processing efficiency in the MSP430FR6041IPNR?
The LEA in the MSP430FR6041IPNR executes 256-point complex FFT up to 40× faster than the CPU alone, enabling real-time spectral analysis of ultrasonic waveforms without CPU load. This accelerates Doppler shift detection, harmonic filtering, and noise rejection - reducing active-mode current consumption and extending battery life in the MSP430FR6041IPNR-based meter designs.
What power modes are available for RTC operation in the MSP430FR6041IPNR, and what is the typical current draw?
The MSP430FR6041IPNR supports RTC operation in LPM3.5 mode with a 3.7-pF crystal, drawing 450 nA typical current. This mode retains RAM, maintains calendar/alarm functions, and allows wake-up on timer or external event - making it ideal for daily measurement cycles in battery-powered smart meters using the MSP430FR6041IPNR.
Is the MSP430FR6041IPNR pin-compatible with other devices in the MSP430FR604x family?
Yes, the MSP430FR6041IPNR is pin-compatible with MSP430FR6043IPNR and MSP430FR60431IPNR in the 80-pin LQFP package. All share identical pin mapping for USS_A channels (CH0_IN/CH1_IN/CH0_OUT/CH1_OUT), MTIF, power domains (PVCC/PVSS), and timing interfaces (USSXTIN/USSXTOUT), enabling hardware reuse across FRAM capacity variants.
MSP430FR6041IPNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- 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, SPI
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 57
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 10x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR6041IPNR FAQ
1.How can I place an order for MSP430FR6041IPNR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR6041IPNR 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 MSP430FR6041IPNR reliable?
The price and inventory of MSP430FR6041IPNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR6041IPNR is usually 5 days.
3.What payment methods are accepted for MSP430FR6041IPNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR6041IPNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR6041IPNR?
MSP430FR6041IPNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR6041IPNR 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 MSP430FR6041IPNR?
For technical support, including MSP430FR6041IPNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR6041IPNR requirements.
6.How does Aetrix verify that MSP430FR6041IPNR is sourced from the original manufacturer or authorized distributors?
All MSP430FR6041IPNR 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 MSP430FR6041IPNR meets industry standards.
7.What is the process for return or replacement of MSP430FR6041IPNR?
All MSP430FR6041IPNR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR6041IPNR, 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 MSP430FR6041IPNR part is unused and in its original packaging.
Return procedure for MSP430FR6041IPNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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