FRAM memory: why it changes the BOM equation
The MSP430FR2355TRHAT: Its distinguishing feature is 32 KB of FRAM program memory instead of Flash — FRAM writes at bus speed, consumes less power per write, and retains data without a backup battery. For a design that logs configuration data or needs frequent non-volatile updates, this eliminates the separate EEPROM or battery-backed SRAM that a Flash MCU would require.
Supply voltage and temperature — what they let you do
The 40-VFQFN exposed-pad package (6x6 mm) aids thermal dissipation in enclosed designs.
Peripherals and I/O — what connects where
For a control board that needs analog front-end and serial interfaces in one package, this MCU consolidates several discrete components.
Lifecycle status and sourcing posture
There is no announced last-time-buy or end-of-life notice.