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Texas Instruments MSP430FR5043IRGCR
- Part No.:
- MSP430FR5043IRGCR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR5043IRGCR.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 64VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430FR5043IRGCR from Texas Instruments is an ultrasonic sensing microcontroller (MCU) optimized for battery-powered smart water and gas meters. It integrates a 16-MHz RISC CPU, 64KB FRAM, 12KB RAM, 12-bit 8-MSPS sigma-delta ADC (SDHS), programmable gain amplifier (PGA), and dedicated Ultrasonic Sensing Solution (USS_A) subsystem with PPG and PHY. It achieves ±12.5-ps dToF accuracy for water flow and supports pipe diameters from 15 mm to 1000 mm.
For engineers reviewing the MSP430FR5043IRGCR datasheet, MSP430FR5043IRGCR pinout, MSP430FR5043IRGCR application, or MSP430FR5043IRGCR equivalent, key selection criteria include differential time-of-flight resolution (<5 ps), ultra-low-power operation (3 µA @ 1 result/sec), integrated USS_A analog front end, FRAM endurance (10¹⁵ writes), and VQFN-64 package compatibility with metering PCB layouts.
Technical Context
The MSP430FR5043IRGCR implements a tightly coupled ultrasonic sensing architecture: the USS_A module combines a programmable pulse generator (PPG) and low-impedance (4 Ω) PHY driver to excite transducers up to 2.5 MHz, while its high-speed SDHS ADC digitizes return signals at up to 8 MSPS with configurable oversampling. Signal processing is accelerated by the independent Low-Energy Accelerator (LEA), enabling efficient 256-point complex FFTs without CPU intervention.
Its power architecture supports deep sleep modes including LPM3.5 (450 nA with RTC active) and LPM4.5 (30 nA shutdown), with all I/O pins supporting capacitive-touch sensing and edge-selectable wake. The device uses a unified FRAM memory space for code, data, and nonvolatile storage, eliminating erase cycles and enabling atomic writes critical for metering data integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 16-bit RISC CPU up to 16 MHz - enables real-time ultrasonic signal acquisition and processing within strict timing budgets. |
| Ultrasonic Sensing | Integrated USS_A subsystem with PPG, 4-Ω PHY, PGA (–6.5 dB to 30.8 dB), and SDHS ADC - eliminates external analog components for transducer drive and receive path. |
| Time-of-Flight Accuracy | ±12.5 ps (water), ±250 ps (gas) - ensures ±1% flow measurement accuracy across full dynamic range (500:1 for water, 200:1 for gas). |
| Memory | 64 KB FRAM + 12 KB RAM - provides fast, low-energy, radiation-resistant nonvolatile storage for firmware, calibration data, and logs without flash wear-out limitations. |
| Power Consumption | 3 µA @ 1 result/sec (water), 20 µA @ 1 result/sec (gas), LPM3.5 = 450 nA - enables >10-year battery life in sealed utility meters. |
| Package | VQFN-64 (9 mm × 9 mm) - compact footprint suitable for space-constrained meter modules with thermal performance validated for industrial ambient ranges. |
| Clock System | DCO, LFXT (32 kHz), HFXT (up to 16 MHz), and PLL (68–80 MHz) - supports precise timebase generation for dToF computation and flexible system clocking. |
Pinout & Package
VQFN-64 (RGC) package with 0.5-mm pitch, 9 mm × 9 mm body size, and exposed thermal pad. Designed for reflow soldering and optimal thermal dissipation in sealed meter enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0_IN / CH1_IN | Ultrasonic transducer receive input | Differential analog inputs to SDHS ADC channel pair - directly connect transducer echo signals with minimal external filtering. |
| CH0_OUT / CH1_OUT | Ultrasonic transducer drive output | Low-impedance (4 Ω) outputs from USS_A PHY - deliver clean, high-current pulses to excite transducers up to 2.5 MHz. |
| USSXTIN / USSXTOUT | Ultrasonic crystal interface | Connects to optional external ultrasonic reference crystal for enhanced dToF stability in temperature-varying environments. |
| PVCC / PVSS | Analog power supply domain | Independent 1.8–3.6 V supply pins for USS_A and SDHS - isolate noise-sensitive analog circuitry from digital switching. |
| MTIF_PIN_EN / MTIF_OUT_IN | Metering test interface control | Enable and monitor pulse output for metrological verification - operates in LPM3.5 at 200 nA for battery-powered calibration. |
Key Features
| Feature | Design Value |
|---|---|
| USS_A Subsystem Integration | Full analog front end (PPG + PHY + PGA + SDHS) on-chip - reduces BOM count by ≥7 external components versus discrete solutions. |
| FRAM Memory Architecture | 64 KB unified FRAM with 125 ns write speed and 10¹⁵ endurance - enables secure, atomic logging of flow events without wear leveling overhead. |
| Low-Energy Accelerator (LEA) | Hardware FFT engine operating independently of CPU - delivers 40× faster 256-point complex FFT vs. Cortex-M0+, freeing CPU for communication and security tasks. |
| Ultra-Low-Power Metrology Modes | LPM3.5 (450 nA) with RTC and LPM4.5 (30 nA) shutdown - extends battery life beyond 10 years in ANSI C12.22-compliant water/gas meters. |
| Security Coprocessor | 128/256-bit AES engine with IP encapsulation - protects firmware and calibration data against physical and logical tampering per OIML R49 requirements. |
Applications
| Ultrasonic Smart Water Meter | Ultrasonic Smart Gas Meter |
|---|---|
Use Scenario: Residential and commercial water metering with bidirectional flow detection, leak monitoring, and remote AMI reporting. IC Role / Device Role / Timing Role: Primary metrology controller performing dToF computation, flow calculation, data logging, and RF communication management. Use Value: Achieves ±1% accuracy over 500:1 dynamic range and detects flows as low as <1 L/h - meets ISO 4064 Class 2 requirements with no moving parts. | Use Scenario: Industrial and municipal gas metering under varying pressure and temperature conditions, requiring long-term stability and regulatory compliance. IC Role / Device Role / Timing Role: Integrated sensor AFE and signal processor handling transducer excitation, echo acquisition, temperature-compensated dToF, and pulse output generation. Use Value: Delivers ±1% accuracy up to 12,000 L/h and complies with EN 1434 and OIML R49 - eliminates need for external flow compensators. |
| Ultrasonic Heat Meter | Flow Transmitter |
Use Scenario: District heating systems measuring thermal energy transfer via forward/reverse flow and ΔT across heat exchangers. IC Role / Device Role / Timing Role: Dual-channel ultrasonic flow processor synchronized with precision temperature ADCs to compute energy consumption (kWh) in real time. Use Value: Supports simultaneous dual-transducer operation with <5 ps time resolution - enables sub-1% thermal energy accuracy per EN 1434 Annex C. | Use Scenario: Industrial process control where raw flow rate data must be transmitted via Modbus RTU or HART to central SCADA systems. IC Role / Device Role / Timing Role: Standalone flow computation engine with eUSCI_A UART/IrDA and eUSCI_B I²C interfaces for protocol bridging and diagnostics. Use Value: Integrates MTIF pulse generation (up to 1024 p/s) and 16-bit counter - provides certified pulse output compatible with legacy mechanical meter interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrasonic sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5043IPM | LQFP-64 (10 mm × 10 mm), higher thermal resistance, no exposed pad | Better suited for prototyping and manual assembly; less optimal for thermally constrained meter housings | Select when board-level rework or socket-based validation is required. |
| MSP430FR6043IRGCR | VQFN-64 with identical USS_A, FRAM, and LEA specs; adds integrated LCD driver (248-segment) | Required only if on-device display (e.g., local meter readout) is needed alongside ultrasonic sensing | Choose only if LCD support is mandatory - adds no benefit for headless transmitter or AMI-only deployments. |
Compared with MSP430FR5043IPM, the MSP430FR5043IRGCR offers superior thermal performance and smaller footprint for volume meter production; compared with MSP430FR6043IRGCR, it removes unused LCD circuitry to reduce cost and power in display-less applications.
Availability
MSP430FR5043IRGCR is available at Aetrix Electronics and suitable for ultrasonic water metering, smart gas metering, and flow transmitter applications requiring stable component supply, long-lifecycle assurance, and TI-authorized traceability.
Supply support for MSP430FR5043IRGCR 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, embedded processing, and connectivity technologies for industrial, automotive, and consumer applications.
The MSP430FR5043IRGCR belongs to TI's ultrasonic sensing MCU product line, engineered specifically for metrological-grade flow measurement in battery-operated utility meters - emphasizing dToF precision, ultra-low-power operation, and integrated analog signal chain integrity.
FAQ
What is the primary metrological function of the MSP430FR5043IRGCR?
The MSP430FR5043IRGCR serves as a complete ultrasonic flow measurement SoC, performing differential time-of-flight (dToF) computation using its integrated USS_A subsystem, SDHS ADC, and LEA accelerator. It calculates flow rate, totalized volume, and diagnostic metrics - all while maintaining ±12.5-ps dToF accuracy for water and meeting ISO 4064 Class 2 requirements. The MSP430FR5043IRGCR handles signal acquisition, processing, data logging, and interface management in a single chip.
Does the MSP430FR5043IRGCR support external ultrasonic transducers operating above 1 MHz?
Yes, the MSP430FR5043IRGCR's USS_A PHY supports standard ultrasonic sensors up to 2.5 MHz, with programmable pulse generation and impedance-matched 4-Ω drive capability. Its SDHS ADC accepts signals from transducers across this frequency range, and the PPG allows multi-tone burst generation for improved signal-to-noise ratio. The MSP430FR5043IRGCR has been validated with common 1-MHz and 2.25-MHz transducers used in commercial water and gas meters.
How does the FRAM memory in the MSP430FR5043IRGCR improve reliability in metering applications?
The 64KB FRAM in the MSP430FR5043IRGCR enables fast, low-energy, wear-free writes - critical for logging flow events, timestamps, and alarms in battery-powered meters. With 10¹⁵ write-cycle endurance and 125 ns per word write speed, it eliminates flash erase delays and degradation risks. This ensures deterministic, atomic data storage even during unexpected power loss - a key requirement for OIML R49 and ANSI C12.22 compliance. The MSP430FR5043IRGCR leverages FRAM for both program execution and secure data retention.
What power modes are available for ultra-low-power operation in the MSP430FR5043IRGCR?
The MSP430FR5043IRGCR supports multiple low-power modes: Active mode (~120 µA/MHz), LPM3.5 (450 nA with RTC active), and LPM4.5 (30 nA shutdown). Its USS_A subsystem can operate autonomously in LPM3.5, enabling periodic wake-up for dToF measurements without CPU involvement. The MSP430FR5043IRGCR achieves 3 µA average current during continuous water flow measurement (1 result/sec), extending battery life beyond 10 years in sealed meters.
Is the MSP430FR5043IRGCR pin-compatible with other devices in the MSP430FR504x family?
Yes, the MSP430FR5043IRGCR shares identical pinout and signal mapping with MSP430FR50431IRGC and MSP430FR5041IRGC in the VQFN-64 (RGC) package. All three support the same USS_A, SDHS, LEA, and peripheral configurations - differing only in FRAM size (64 KB vs. 32 KB) and BSL interface (UART vs. I²C). This allows hardware reuse across variants during design-in and qualification. The MSP430FR5043IRGCR is fully drop-in compatible with these variants on RGC-layout PCBs.
MSP430FR5043IRGCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-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:
- IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 44
- Program Memory Size:
- 64KB (64K 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 9x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5043IRGCR FAQ
1.How can I place an order for MSP430FR5043IRGCR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5043IRGCR 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 MSP430FR5043IRGCR reliable?
The price and inventory of MSP430FR5043IRGCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5043IRGCR is usually 5 days.
3.What payment methods are accepted for MSP430FR5043IRGCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5043IRGCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5043IRGCR?
MSP430FR5043IRGCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5043IRGCR 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 MSP430FR5043IRGCR?
For technical support, including MSP430FR5043IRGCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5043IRGCR requirements.
6.How does Aetrix verify that MSP430FR5043IRGCR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5043IRGCR 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 MSP430FR5043IRGCR meets industry standards.
7.What is the process for return or replacement of MSP430FR5043IRGCR?
All MSP430FR5043IRGCR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5043IRGCR, 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 MSP430FR5043IRGCR part is unused and in its original packaging.
Return procedure for MSP430FR5043IRGCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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