Specifications
| Type | Description |
|---|---|
| Part Number | MSP430FR5041 |
| Manufacturer | Texas Instruments |
| Product Type | 16-bit ultrasonic sensing MCU |
| Category | Microcontroller |
| Component Type | MCU |
| Package Case | LQFP (64) 10 mm x 10 mm; VQFN (64) 9 mm x 9 mm |
| CPU Architecture | 16-bit RISC |
| Maximum CPU Clock Frequency | 16 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Nonvolatile Memory Type | FRAM |
| Maximum FRAM Size | Up to 64 KB |
| FRAM Write Speed | 125 ns per word |
| FRAM Write Endurance | 10^15 write cycles |
| RAM Size | 12 KB total RAM |
| LEA Shared RAM | 8 KB |
| Active Mode Current | Approximately 120 uA/MHz |
| Standby Mode Current With RTC | 450 nA |
| Shutdown Current | 30 nA |
| Ultrasonic Water Metering Current | Approximately 3 uA |
| Ultrasonic Gas Metering Current | Approximately 20 uA |
| High-Speed ADC Resolution | 12 bit |
| High-Speed ADC Output Data Rate | Up to 8 Msps |
| SAR ADC Resolution | 12 bit |
| External ADC Inputs | Up to 8 channels |
| Analog Comparator Channels | 12 channels |
| Programmable Gain Amplifier Range | -6.5 dB to 30.8 dB |
| PLL Output Range | 68 MHz to 80 MHz |
| PHY Output Driver Impedance | 4 ohm |
| Supported Ultrasonic Sensor Frequency | Up to 2.5 MHz |
| Water dToF Accuracy | +/-12.5 ps |
| Gas dToF Accuracy | +/-250 ps |
| Water Time Measurement Resolution | <5 ps |
| Gas Time Measurement Resolution | <100 ps |
| Water Meter Dynamic Range Accuracy | +/-1% accuracy over 500:1 dynamic range |
| Gas Meter Dynamic Range Accuracy | +/-1% accuracy up to 12000 liters/hour over 200:1 dynamic range |
| Maximum Water Flow Rate | 8800 liters/hour; 40 gallons/minute |
| Minimum Water Flow Detection | <1 liter/hour; 0.005 gallons/minute |
| Maximum Gas Flow Rate | >25000 liters/hour |
| Minimum Gas Flow Detection | <3 liters/hour |
| Supported Pipe Diameter Range | 15 mm to 1000 mm |
| DMA Channels | 6 channels |
| Timers | 6 x 16-bit timers |
| Hardware Multiplier | 32-bit |
| CRC Support | 32-bit and 16-bit CRC |
| AES Security | 128-bit or 256-bit AES |
| eUSCI_A Ports | Up to 4 ports |
| eUSCI_B Ports | Up to 2 ports |
| Bootloader Interfaces | Hardware UART or I2C |
| MTIF Pulse Rate | Up to 1024 pulses/s |
| MTIF Count Capacity | 65535; 16 bit |
| MTIF Low-Power Operation Current | 200 nA typical |
| Package Option | MSP430FR5041IPM: LQFP (64), 10 mm x 10 mm |
| Package Option | MSP430FR5041IRGC: VQFN (64), 9 mm x 9 mm |
| Datasheet Status | request_only |
Product Overview
The MSP430FR5041 is a Texas Instruments 16-bit ultrasonic sensing MCU built around a 16-bit RISC core operating up to 16 MHz. It uses integrated FRAM for nonvolatile program, data, and storage in a unified memory space, with up to 64 KB available. The memory system supports 125 ns per word writes and 10^15 write cycles, while the device also includes 12 KB total RAM with 8 KB shared with the LEA subsystem.
For ultrasonic metering, the USS_A subsystem includes a 12-bit SDHS sigma-delta ADC with output data rates up to 8 Msps, a programmable gain amplifier from -6.5 dB to 30.8 dB, a 68 MHz to 80 MHz PLL, and a 4 ohm PHY output driver. It supports direct ultrasonic sensor interfaces up to 2.5 MHz.
The device targets ultrasonic water and gas metering. Water measurement specifications include +/-12.5 ps dToF accuracy, less than 5 ps time measurement resolution, and +/-1% accuracy over a 500:1 dynamic range. Gas metering specifications include +/-250 ps dToF accuracy, less than 100 ps resolution, and +/-1% accuracy up to 12000 liters/hour over a 200:1 dynamic range. Package options include MSP430FR5041IPM in 64-pin LQFP and MSP430FR5041IRGC in 64-pin VQFN.
Key Features
- 16-bit RISC CPU operates up to 16 MHz
- 1.8 V to 3.6 V supply voltage range
- FRAM up to 64 KB with 10^15 write cycles
- 12 KB RAM, including 8 KB LEA shared RAM
- 12-bit SDHS ADC outputs data up to 8 Msps
- 12-bit SAR ADC with up to 8 external inputs
- Programmable gain amplifier spans -6.5 dB to 30.8 dB
- Supports ultrasonic sensors operating up to 2.5 MHz
- Six DMA channels and six 16-bit timers
- 128-bit or 256-bit AES coprocessor support
- Hardware UART or I2C bootloader interfaces
- LQFP and VQFN 64-pin package options
Typical Applications
- Ultrasonic water meters
- Ultrasonic gas meters
- Water flow measurement
- Gas flow measurement
- Metering pulse generation
- Metering pulse counting
- Low-power RTC metering systems
- Ultrasonic sensor interfaces
Procurement Notes
When requesting a quote for MSP430FR5041, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For MCU, processor and logic IC sourcing, package, operating voltage, temperature grade, speed or frequency grade, firmware or mask version, lifecycle status and programming requirements should be checked before approval.
FAQ
What type of microcontroller is the MSP430FR5041?
The MSP430FR5041 is a Texas Instruments 16-bit ultrasonic sensing MCU. It uses a 16-bit RISC CPU running up to 16 MHz and integrates FRAM, RAM, ultrasonic sensing analog front-end functions, ADCs, timers, DMA, CRC, and AES support.
Which packages are available for the MSP430FR5041?
The extracted device information lists two package options: MSP430FR5041IPM in a 64-pin LQFP package measuring 10 mm x 10 mm, and MSP430FR5041IRGC in a 64-pin VQFN package measuring 9 mm x 9 mm.
What ultrasonic metering functions does the MSP430FR5041 support?
The device supports ultrasonic water and gas metering with direct interface to standard ultrasonic sensors up to 2.5 MHz. It provides water dToF accuracy of +/-12.5 ps and gas dToF accuracy of +/-250 ps across low to high flow rates.
What are the low-power current specifications?
The MSP430FR5041 has approximately 120 uA/MHz active-mode current, 450 nA standby current in LPM3.5 with RTC clocked by a 3.7-pF crystal, and 30 nA shutdown current in LPM4.5.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.