256 KB FRAM — no wear-leveling needed for data logging
Its 256 KB of FRAM program memory combines non-volatility with byte-addressable write speeds that outpace Flash, so you can log sensor data or store calibration constants without managing erase cycles or wear-leveling. The 8 KB SRAM handles stack, fast buffers, and DMA transfers. Twenty 12-bit ADC channels sample analog inputs directly, and 68 GPIOs give headroom for parallel sensor arrays or display interfaces.
Brown-out detect and POR are integrated, so the core resets cleanly on power-up and during sag events. The internal oscillator trims to spec, but an external crystal can be used for tighter timing — the oscillator type supports both internal and external sources.
Connectivity and peripherals for sensor hub designs
The DMA engine moves data between peripherals and memory without CPU intervention, which keeps the core free for algorithm work. PWM outputs can drive small motors or LED drivers directly, and the watchdog timer guards against firmware lockups in unattended equipment.
The 12×12 mm body leaves room for fan-out vias on a two-layer board. The exposed pad is not present on this package, so thermal dissipation relies on the leadframe and board copper.
The base product number MSP430FR5994 covers the whole density family, so if a future design needs more memory or a different package, the migration stays within the same part-number root. For dual-sourcing resilience, the MSP430FR5994IPN is a single-sourced TI part — no official second source exists, but the FRAM ecosystem is mature and TI has maintained long production runs on this series.