16 MHz MSP430 — the low-power workhorse for sensor and control loops
4 KB Flash and 256 bytes RAM — sizing the firmware budget
With 4 KB of program Flash and 256 bytes of RAM, this MCU is built for lean firmware. A typical I²C temperature sensor poll-and-report loop, a PWM fan controller, or a simple serial bridge fits comfortably. The RAM is tight — plan for register-based data handling and avoid large buffers. The Flash endurance is standard for the MSP430 family; wear-leveling is not needed for typical field-update cycles at this density.
16-QFN with exposed pad — layout and thermal handling
The 16-VQFN package with exposed pad (4x4 mm body) saves board area but demands attention during layout. The 10 I/O pins are on the perimeter — no fine-pitch surprises, but verify the pinout against your schematic before committing the footprint.
Lifecycle and sourcing — still active, no LTB risk
ROHS3 compliant.