ARM Cortex-M3 at 25 MHz — what the core speed means for your control loop
The LM3S310-EGZ25-C2T runs a 32-bit ARM Cortex-M3 core at 25 MHz. That clock rate handles typical sensor polling, UART communication, and PWM generation without stalling the main loop — adequate for a single-axis motor drive or a simple HMI panel where the timing budget is in the microsecond range, not nanoseconds. The 16 KB Flash and 4 KB SRAM limit firmware complexity; expect to fit a modest state machine, a few lookup tables, and a bootloader, but not a full RTOS with multiple stacks.