The Texas Instruments LM3S2620-IQC25-A2 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris family, running at 25 MHz with 128 KB of Flash and 32 KB of RAM.
That doesn't mean it's gone tomorrow, but it does mean TI has flagged it for eventual phase-out. If you're supporting an existing production run, you can still source it through independent distribution — we quote to order against an RFQ. For a new design, you'll want to evaluate a pin-compatible sibling in the same Stellaris 2000 family before committing the layout.
The 25 MHz core speed handles a CAN node running a control loop.