16-bit CPUXV2 at 25 MHz with USB 2.0 — the BOM-fit tier
The 63 GPIO lines in an 80-LQFP package give enough headroom for sensor aggregation, human-machine interface, and control logic without needing port expanders. This is the mid-density, USB-equipped tier of the MSP430F5xx line — not the 256 KB flagship, but the part a production BOM picks when the firmware fits in 96 KB and the design needs USB without the cost of a separate PHY.
Industrial temperature range — -40 to 85°C operating
Brown-out detect and POR are integrated, so the reset circuit on the board only needs the external RC — the chip handles supply-ramp supervision internally.
80-LQFP — rework and inspection notes
The 80-LQFP (12x12 mm body) is a garden-variety quad flat pack with 0.5 mm pitch — a standard hot-air station with a fine nozzle lifts it clean if the board is preheated to 100°C. No exposed thermal pad underneath, so the part relies on the leadframe for heat dissipation; keep the trace width on the power pins adequate for the active current draw.
This means the MSP430F5517IPN is qualified for new design-ins and production ramps without last-time-buy exposure. Texas Instruments continues to manufacture the MSP430F5xx family, and the base product number MSP430F5517 has a stable supply profile through authorized and independent channels. No pin-compatible second source exists in the MSP430 ecosystem — the part is single-sourced to TI, but the active status and broad distributor stocking mitigate supply risk for volume production.