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Texas Instruments MSP430FR59941IRGZT — Microcontrollers & Processors (MCU / MPU / DSP)

MSP430FR59941IRGZT 16-bit MCU, 256KB FRAM, 16MHz, 48-VQFN

MPNMSP430FR59941IRGZT
End of Life

Texas Instruments MSP430FR59941IRGZT, MSP430™ FRAM series, 16-Bit MCU, 16MHz, 256KB FRAM, 8K x 8 RAM, 40 I/O, 48-VFQFN Exposed Pad, -40°C to 85°C, 1.8V to 3.6V.

$11.1800Ref. price · indicative, final on quote
Texas Instruments MSP430FR59941IRGZT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MSP430FR59941IRGZT specifications
ParameterValue
SeriesMSP430™ FRAM
MountingSurface Mount
Oscillator typeExternal, Internal
Program memory typeFRAM
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed16MHz
RAM size8K x 8
Core size16-Bit
PackageTape & Reel (TR) Cut Tape (CT)
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI2C, IrDA, SPI, UART/USART
Number of i (O)40
Core processorMSP430 CPUXV2
Case48-VFQFN Exposed Pad
Data convertersA/D 16x12b
Program memory size256KB (256K x 8)

Product details

256KB FRAM — what it changes for the firmware strategy

Its headline feature is 256KB of FRAM program memory — non-volatile, byte-addressable, and fast to write, so you can treat it like RAM that holds state through a power cycle. No erase-before-write, no sector boundaries to manage, no wear-leveling needed for typical data-logging or config-storage duty.

Industrial temperature, wide supply — where it fits

The 1.8V to 3.6V supply range means a single Li-ion cell or a regulated 3.3V rail both work without a secondary regulator.

Peripherals and connectivity for a sensor-hub role

The PWM timer can drive a small motor or LED string directly. For serial links you get I2C, SPI, and UART/USART — enough to talk to a radio module, an external sensor array, or a display controller. IrDA support is there if the design needs infrared communication.

The base product number is MSP430FR59941, so any variant suffix differences are package or tape/reel options, not functional changes.

Frequently asked questions

What is the difference between MSP430FR59941IRGZT and MSP430FR5994IRGZT?

The two part numbers share the same base die and package. The difference is in the FRAM and SRAM density options across the MSP430FR5994 family — the '41' variant carries 256KB FRAM and 8K x 8 SRAM, while the '4' variant (no '1') has a different memory configuration. Pin-compatible across the family, so a BOM swap is a firmware recompile, not a board respin.

Is the MSP430FR59941IRGZT compatible with 3.3V logic?

Yes. The supply range goes up to 3.6V, so 3.3V logic levels are within spec. The I/O pins are 5V-tolerant? — the evidence does not state a 5V tolerance, so assume 3.3V-only on the I/O rails.