80 MHz Cortex-M3 — processing headroom for control loops
The 80 MHz core speed places this MCU in the mid-range of Cortex-M3 parts. The 24 KB SRAM is the tighter resource; if your application buffers large Ethernet or USB packets, budget carefully or move to a RAM-heavier sibling in the Stellaris family.
Sourcing now runs through the independent market — broker, surplus, and new-old-stock inventory. Any stock you find will carry date codes from the original production run, so lot traceability and physical authentication become the priority. The laser-etched marking and package font should match TI's factory standard for the date code week; any re-marked or sanded units are a counterfeit red flag.
Package and mounting — rework considerations
No special stencil or reflow profile beyond the usual J-STD-020 MSL precautions. If you are pulling parts from surplus tape-and-reel, check the moisture-sensitive-bag seal date — an opened reel past the floor-life window needs a bake before reflow to avoid popcorning.