FRAM memory — why it changes the firmware strategy
With 8.5 KB of FRAM, you can store calibration constants, configuration tables, and data logs directly in program space without wearing out the memory. Field firmware updates over UART or I²C are practical because FRAM writes fast enough to keep the update window short. No separate EEPROM chip needed for non-volatile storage — that saves a BOM line and a footprint.
The MSP430FR2672TRHBT carries an EOL-hot lifecycle flag, which means it is in its last-time-buy window. Official production status is listed as Active, but the EOL signal suggests a phase-out is imminent or underway.