The TI LM3S618-EGZ50-C2 is a Stellaris ARM Cortex-M3 MCU running at 50 MHz, with 32 KB Flash and 8 KB SRAM. It includes a 6-channel 10-bit ADC, 30 GPIOs, and serial interfaces (UART, SPI, SSI, Microwire, QEI).
50 MHz Cortex-M3 — what it means for the control loop
The 50 MHz core executes integer control loops efficiently. The 6-channel 10-bit ADC and PWM module handle sensor read and actuator drive.
Memory budget: 32 KB Flash, 8 KB SRAM
32 KB Flash and 8 KB SRAM support control firmware and data buffers. For larger code, consider LM3S6xx siblings with higher Flash.
On-chip peripherals: ADC, PWM, serial interfaces
The 6-channel 10-bit ADC and PWM module with dead-band insertion handle current sensing and half-bridge drive. Serial interfaces include UART, SPI, SSI, and Microwire.