512B FRAM — what it changes for your firmware strategy
Its distinguishing feature is 512B of FRAM program memory — a unified code-and-data store that writes at near-SRAM speed, consumes negligible power per write, and endures orders of magnitude more write cycles than Flash. The 512 x 8 RAM provides working memory for stack and variables, and the 12 I/O lines in the 16-TSSOP package suit compact, single-function controller boards.
Peripherals and connectivity — what is on-chip
With 12 GPIOs, the part handles a few pushbuttons, LEDs, and a serial interface without needing a port expander.
For dual-sourcing or supply resilience, TI's MSP430 FRAM family includes pin-compatible density variants — the MSP430FR2001 is a direct functional sibling with the same footprint and peripheral set, differing only in FRAM size.