80 MHz Cortex-M3 — what the speed buys you
80 MHz on a single-cycle multiply Cortex-M3 core. The 48 KB SRAM is the tighter resource here — a full Ethernet frame buffer plus two CAN message objects eats into that quickly.
This part is officially obsolete per the manufacturer. No last-time-buy windows remain open; new production has ceased. For an existing design already qualified on the LM3S9L97, the only path is surplus or broker-channel procurement.
The 100-LQFP (14x14 mm) is a common footprint.