FRAM memory and 16 MHz core for low-power edge processing
Connectivity covers I²C, SPI, UART/USART, and IrDA, so the part can talk to common sensor modules, memory chips, and radio modules directly. The supply range of 1.8 V to 3.6 V lets it run from a single coin cell or two alkaline batteries down to near-depletion. The industrial temperature grade of -40°C to 85°C qualifies it for outdoor enclosures, factory-floor controllers, and automotive cabin-adjacent applications.
256 KB FRAM — what it means for the BOM
FRAM writes at bus speed with no erase-before-write penalty, unlike Flash. For a battery-powered sensor that logs data every minute, FRAM eliminates the energy spike of a Flash page-erase cycle — that spike is often the dominant energy event in a wake-sense-send-sleep sequence. The 256 KB capacity is enough for firmware plus a modest data buffer; if the application needs more than 8 KB of SRAM for runtime variables, the DMA engine can move data directly between FRAM and peripherals without CPU intervention.
Sourcing and lifecycle
The MSP430FR5994IRGZT carries an active product status per the manufacturer. It is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time. For volume or long-term BOM planning, the base product number MSP430FR5994 covers multiple package and temperature variants within the same FRAM family, providing some second-source flexibility within TI's own portfolio.