64 KB FRAM — the non-volatile memory that writes like RAM
Its defining feature is 64 KB of FRAM program memory — a non-volatile storage technology that combines the write speed and endurance of SRAM with the data retention of Flash. The FRAM is organized as 64K x 8 bits, and the part also carries 2K x 8 of conventional RAM for stack and scratchpad use. This makes the MSP430FR5949IRHAR a strong fit for applications that need frequent data logging, field-upgradeable firmware, or low-energy writes without the erase-cycle overhead of Flash.
Peripheral set for sensor-heavy designs
A 14-channel, 12-bit ADC handles multi-sensor acquisition without external converters — think temperature, pressure, and current sensing on one die. The 33 general-purpose I/O lines support parallel interfaces and keypad scanning.
Package and layout notes
The MSP430FR5949IRHAR comes in a 40-pin VFQFN with an exposed thermal pad (6x6 mm body). The package is surface-mount only, so hand-assembly requires a hot-air station or reflow oven.
Lifecycle and sourcing
This is a standard-production TI MSP430 part, so it is available through the usual distribution channels. For BOM planning, the active status means no last-time-buy urgency, but the 40-VQFN package is moisture-sensitive — store the reels in a dry cabinet or bake before reflow if the moisture-barrier bag has been open past the floor-life window.