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Texas Instruments MSP430FR5731IRHAR — Microcontrollers & Processors (MCU / MPU / DSP)

MSP430FR5731IRHAR 16-bit MCU, 24 MHz, 4 KB FRAM, 40-VQFN

MPNMSP430FR5731IRHAR
Obsolete

Texas Instruments MSP430FR5731IRHAR, MSP430™ FRAM series, 16-bit MCU, 24 MHz, 4 KB FRAM, 1K x 8 RAM, 14x10b ADC, I²C/SPI/UART, -40°C to 85°C, 40-VQFN (6x6 mm).

$3.0200Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MSP430FR5731IRHAR specifications
ParameterValue
SeriesMSP430™ FRAM
MountingSurface Mount
Oscillator typeInternal
Program memory typeFRAM
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed24MHz
PackageTape & Reel (TR)
RAM size1K x 8
Core size16-Bit
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, SCI, SPI, UART/USART
Number of i (O)32
Core processorMSP430 CPUXV2
Case40-VFQFN Exposed Pad
Data convertersA/D 14x10b
Program memory size4KB (4K x 8)

Product details

FRAM-based 16-bit MCU — what the 24 MHz and 4 KB FRAM mean for your BOM

FRAM is the key differentiator here: it is non-volatile like Flash but writes at near-SRAM speeds with essentially unlimited endurance — no erase cycles, no write-page buffers. That makes it a strong fit for data-logging, configuration storage, or any application where the MCU writes its own code space frequently, such as over-the-air firmware updates or parameter calibration in industrial sensors.

This means TI has ended production; there is no official last-time-buy window open. For existing BOM lines, the independent channel can still fill orders while stock lasts, but expect tightening availability as the installed base consumes the remaining inventory.

Frequently asked questions

Is MSP430FR5731IRHAR obsolete?

Yes, the MSP430FR5731IRHAR is listed as Obsolete. TI has discontinued production, and no last-time-buy window is active. The part is available through surplus and independent channels while inventory lasts.

What is the replacement for MSP430FR5731IRHAR?

TI has not published a direct pin-compatible replacement for this specific order code. For new designs, consider the current MSP430FR2xxx or MSP430FR5xxx series FRAM MCUs, which offer higher memory densities and updated peripherals while maintaining the FRAM advantage. Check the TI MSP430 FRAM portfolio for a pin-compatible upgrade path.