The FRAM technology combines the nonvolatility of Flash with the write speed and endurance of SRAM—useful for data-logging applications where frequent writes to nonvolatile memory are needed without wear-leveling overhead.
FRAM endurance and field reprogrammability
FRAM program memory is rated for 10¹⁵ write cycles—effectively unlimited for field-firmware updates or data logging. Unlike Flash-based MCUs that require sector-erase cycles and wear-leveling, the MSP430FR2475TPTR can write individual bytes at full speed without a pre-erase step. This simplifies the firmware OTA staging area and allows the 32.5 KB to serve as both code store and nonvolatile data buffer.