The core runs at 80 MHz, backed by 256 KB of Flash and 96 KB of SRAM.
At 80 MHz, the Cortex-M3 can execute a typical PID control loop with sensor read, calculation, and PWM update in under 10 µs, leaving cycles for Ethernet or CAN message handling. The 96 KB SRAM gives room for double-buffered data from the ADC or a small TCP/IP stack without overflowing into external memory. If your application needs more throughput or a larger memory map, the Stellaris 9000 series offers higher-density Flash options in the same BGA footprint — but the 256 KB / 96 KB split here covers the majority of single-chip control designs.