48 KB FRAM — the headline feature
The MSP430FR5948IRHAR: Its program memory is 48 KB of FRAM — a non-volatile memory that combines the speed of SRAM with the persistence of Flash, and supports near-infinite write endurance. This makes it a strong fit for applications that log data frequently, update firmware over the air, or need to retain calibration constants without a separate EEPROM. The device integrates 2K x 8 of RAM for stack and variable storage, plus a 14-channel 12-bit ADC for direct sensor interfacing.
Package and thermal pad
Housed in a 40-VFQFN with exposed pad (6x6 mm body, supplier package 40-VQFN). Mounting is surface-mount only.
Lifecycle and sourcing posture
That means no last-time-buy pressure and no forced redesign for the foreseeable future. The base product number is MSP430FR5948, and this specific variant (IRHAR) is the industrial-temperature, Tape & Reel option. There is no official second-source pin-compatible alternate listed in the record. If dual-sourcing is a requirement, the MSP430 FRAM family includes multiple density and peripheral options in the same 40-pin QFN footprint — but verify pin compatibility against the specific project schematic.