FRAM memory — the key differentiator
FRAM program memory is the distinguishing feature here: it combines non-volatile storage with write speeds and endurance far beyond Flash or EEPROM. For designs that log data or update firmware in the field, FRAM eliminates the need for a separate serial EEPROM and avoids the write-cycle limits that constrain Flash-based MCUs. The 32 KB capacity is sized for moderate firmware footprints plus a data-log buffer.
Lifecycle and sourcing reality
The MSP430FR58671IRGZR is end-of-life (hot) per TI. No successor is listed. For existing BOM lines, plan for last-time-buy or surplus sourcing.
Supply voltage and temperature range
Operates from 1.8 V to 3.6 V. The -40°C to 85°C industrial temperature range qualifies it for outdoor and factory-floor use.