FRAM instead of Flash — why it matters for this MCU
What sets it apart from conventional MSP430 parts is its 32KB program memory implemented in FRAM (ferroelectric RAM) rather than Flash or EEPROM. The 2K x 8 SRAM handles stack and temporary variables; the 32KB FRAM serves double duty as both code store and data memory, so you can partition it between firmware and non-volatile data buffers without a separate EEPROM.
Peripheral set for metering and display applications
The 52 I/O lines in the 64-VFQFN package provide enough headroom for a keypad matrix, sensor interfaces, and a parallel LCD bus if needed.
Connectivity and serial interfaces
The IrDA support is less common on low-power MCUs and matters for IR data links in handheld terminals or optical isolation barriers.
