FRAM-based 16-bit MCU for low-power metering and HMI
It belongs to the MSP430 FRAM series, where the program memory is 64 KB of FRAM — a non-volatile memory that combines the speed of SRAM with the non-volatility of Flash, but without the write-cycle endurance limits typical of Flash. This makes it a strong fit for applications that need frequent data logging, parameter updates, or instant-on writes, such as smart meters, building automation controllers, and portable medical devices.
This eliminates the wear-leveling overhead that Flash-based MCUs require for frequent parameter writes. The 2K x 8 RAM provides scratchpad and stack space, while the FRAM handles persistent storage with endurance rated at 10^15 write cycles — effectively unlimited for field updates.
80-LQFP package and PCB integration
It is a surface-mount package that reflows easily with typical lead-free profiles. The 63 I/O pins provide ample headroom for connecting an LCD panel, keypad, sensors, and serial peripherals without needing a port expander.
For dual-sourcing resilience, the MSP430 FRAM family includes multiple density and peripheral options in the same 80-LQFP footprint, allowing a pin-compatible drop-in if a different memory size or feature set is needed later.